The plan and delineation of prostheses in general or a specific prosthesis.
The plan and delineation of dental prostheses in general or a specific dental prosthesis. It does not include DENTURE DESIGN. The framework usually consists of metal.
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
Prostheses used to partially or totally replace a human or animal joint. (from UMDNS, 1999)
Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.
Replacement for a knee joint.
Replacement for a hip joint.
Rigid, semi-rigid, or inflatable cylindric hydraulic devices, with either combined or separate reservoir and pumping systems, implanted for the surgical treatment of organic ERECTILE DYSFUNCTION.
A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.
Prosthetic replacements for arms, legs, and parts thereof.
Artificial device such as an externally-worn camera attached to a stimulator on the RETINA, OPTIC NERVE, or VISUAL CORTEX, intended to restore or amplify vision.
Surgical insertion of a prosthesis.
The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed)
Medical devices which substitute for a nervous system function by electrically stimulating the nerves directly and monitoring the response to the electrical stimulation.
An implant used to replace one or more of the ear ossicles. They are usually made of plastic, Gelfoam, ceramic, or stainless steel.
An artificial replacement for one or more natural teeth or part of a tooth, or associated structures, ranging from a portion of a tooth to a complete denture. The dental prosthesis is used for cosmetic or functional reasons, or both. DENTURES and specific types of dentures are also available. (From Boucher's Clinical Dental Terminology, 4th ed, p244 & Jablonski, Dictionary of Dentistry, 1992, p643)
A prosthesis that gains its support, stability, and retention from a substructure that is implanted under the soft tissues of the basal seat of the device and is in contact with bone. (From Boucher's Clinical Dental Terminology, 4th ed)
Surgical insertion of synthetic material to repair injured or diseased heart valves.
'Amputee' is a medical term used to describe an individual who has undergone the surgical removal of a limb or extremity, such as an arm, leg, foot, or hand, due to various reasons like trauma, disease, or congenital defects.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
A prosthetic appliance for the replacement of areas of the maxilla, mandible, and face, missing as a result of deformity, disease, injury, or surgery. When the prosthesis replaces portions of the mandible only, it is referred to as MANDIBULAR PROSTHESIS.
A device, activated electronically or by expired pulmonary air, which simulates laryngeal activity and enables a laryngectomized person to speak. Examples of the pneumatic mechanical device are the Tokyo and Van Hunen artificial larynges. Electronic devices include the Western Electric electrolarynx, Tait oral vibrator, Cooper-Rand electrolarynx and the Ticchioni pipe.
Partial or total replacement of a joint.
A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)
Surgical insertion of cylindric hydraulic devices for the treatment of organic ERECTILE DYSFUNCTION.
Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).
Coloring, shading, or tinting of prosthetic components, devices, and materials.
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
A plan for collecting and utilizing data so that desired information can be obtained with sufficient precision or so that an hypothesis can be tested properly.
The molecular designing of drugs for specific purposes (such as DNA-binding, enzyme inhibition, anti-cancer efficacy, etc.) based on knowledge of molecular properties such as activity of functional groups, molecular geometry, and electronic structure, and also on information cataloged on analogous molecules. Drug design is generally computer-assisted molecular modeling and does not include pharmacokinetics, dosage analysis, or drug administration analysis.
Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers.
Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. Synthetic resins are commonly used as cements. A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste.
Replacement of the hip joint.
Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.
Replacement of the knee joint.
Holding a DENTAL PROSTHESIS in place by its design, or by the use of additional devices or adhesives.
Holding a PROSTHESIS in place.
The valve between the left ventricle and the ascending aorta which prevents backflow into the left ventricle.
Polyester polymers formed from terephthalic acid or its esters and ethylene glycol. They can be formed into tapes, films or pulled into fibers that are pressed into meshes or woven into fabrics.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
The joining of objects by means of a cement (e.g., in fracture fixation, such as in hip arthroplasty for joining of the acetabular component to the femoral component). In dentistry, it is used for the process of attaching parts of a tooth or restorative material to a natural tooth or for the attaching of orthodontic bands to teeth by means of an adhesive.
The part of a limb or tail following amputation that is proximal to the amputated section.
A partial denture attached to prepared natural teeth, roots, or implants by cementation.

Analysis of 118 second-generation metal-on-metal retrieved hip implants. (1/4301)

Osteolysis is due to particulate wear debris and is responsible for the long-term failure of total hip replacements. It has stimulated the development of alternative joint surfaces such as metal-on-metal or ceramic-on-ceramic implants. Since 1988 the second-generation metal-on-metal implant Metasul has been used in over 60 000 hips. Analysis of 118 retrieved specimens of the head or cup showed rates of wear of approximately 25 microm for the whole articulation per year in the first year, decreasing to about 5 microm per year after the third. Metal surfaces have a 'self-polishing' capacity. Scratches are worn out by further joint movement. Volumetric wear was decreased some 60-fold compared with that of metal-on-polyethylene implants, suggesting that second-generation metal-on-metal prostheses may considerably reduce osteolysis.  (+info)

Low-friction arthroplasty of the hip using alumina ceramic and cross-linked polyethylene. A ten-year follow-up report. (2/4301)

We report the results of our continued review of 14 hip arthroplasties using alumina ceramic femoral heads with cross-linked polyethylene cups. There have been no complications and a very low rate of penetration. This was 0.02 mm per year after an initial 'bedding-in' period of two years. There has been no change in the mean rate between our earlier study at six years and the current results at 10 to 11 years. The use of these bearing surfaces appears to reduce the potential amount of polyethylene debris and may provide the next logical stage in the development of the Charnley low-friction arthroplasty.  (+info)

Cement migration after THR. A comparison of charnley elite and exeter femoral stems using RSA. (3/4301)

Studies using roentgen stereophotogrammetric analysis (RSA) have shown that the femoral components of cemented total hip replacements (THR) migrate distally relative to the bone, but it is not clear whether this occurs at the cement-implant or the cement-bone interface or within the cement mantle. Our aim was to determine where this migration occurred, since this has important implications for the way in which implants function and fail. Using RSA we compared for two years the migration of the tip of the stem with that of the cement restrictor for two different designs of THR, the Exeter and Charnley Elite. We have assumed that if the cement restrictor migrates, then at least part of the cement mantle also migrates. Our results have shown that the Exeter migrates distally three times faster than the Charnley Elite and at different interfaces. With the Exeter migration was at the cement-implant interface whereas with the Charnley Elite there was migration at both the cement-bone and the cement-implant interfaces.  (+info)

Subsidence of a non-polished stem in revisions of the hip using impaction allograft. Evaluation with radiostereometry and dual-energy X-ray absorptiometry. (4/4301)

We revised 24 consecutive hips with loosening of the femoral stem using impaction allograft and a cemented stem with an unpolished proximal surface. Repeated radiostereometric examinations for up to two years showed a slow rate of subsidence with a mean of 0.32 mm (-2.0 to +0.31). Fifteen cases followed for a further year showed the same mean subsidence after three years, indicating stabilisation. A tendency to retroversion of the stems was noted between the operation and the last follow-up. Retroversion was also recorded when displacement of the stem was studied in ten of the patients after two years. Repeated determination of bone mineral density showed an initial loss after six months, followed by recovery to the postoperative level at two years. Defects in the cement mantle and malalignment of the stem were often noted on postoperative radiographs, but did not correlate with the degrees of migration or displacement. After one year, increasing frequency of trabecular remodelling or resorption of the graft was observed in the greater trochanter and distal to the tip of the stem. Cortical repair was noted distally and medially (Gruen regions 3, 5 and 6). Migration of the stems was the lowest reported to date, which we attribute to the improved grafting technique and to the hardness of the graft.  (+info)

Determination of Hounsfield value for CT-based design of custom femoral stems. (5/4301)

Ct and advanced computer-aided design techniques offer the means for designing customised femoral stems. Our aim was to determine the Hounsfield (HU) value of the bone at the corticocancellous interface, as part of the criteria for the design algorithm. We obtained transverse CT images from eight human cadaver femora. The proximal femoral canal was rasped until contact with dense cortical bone was achieved. The femora were cut into several sections corresponding to the slice positions of the CT images. After obtaining a computerised image of the anatomical sections using a scanner, the inner cortical contour was outlined and transferred to the corresponding CT image. The pixels beneath this contour represent the CT density of the bone remaining after surgical rasping. Contours were generated automatically at nine HU levels from 300 to 1100 and the mean distance between the transferred contour and each of the HU-generated contours was computed. The contour generated along the 600-HU pixels was closest to the inner cortical contour of the rasped femur and therefore 600 HU seem to be the CT density of the corticocancellous interface in the proximal part of cadaver femora. Generally, femoral bone with a CT density beyond 600 HU is not removable by conventional reamers. Thus, we recommend the 600 HU threshold as one of several criteria for the design of custom femoral implants from CT data.  (+info)

Endovascular stent graft repair of aortopulmonary fistula. (6/4301)

Two patients who had aortopulmonary fistula of postoperative origin with hemoptysis underwent successful repair by means of an endovascular stent graft procedure. One patient had undergone repeated thoracotomies two times, and the other one time to repair anastomotic aneurysms of the descending aorta after surgery for Takayasu's arteritis. A self-expanding stainless steel stent covered with a Dacron graft was inserted into the lesion through the external iliac or femoral artery. The patients recovered well, with no signs of infection or recurrent hemoptysis 8 months after the procedure. Endovascular stent grafting may be a therapeutic option for treating patients with aortopulmonary fistula.  (+info)

Total knee replacement: should it be cemented or hybrid? (7/4301)

OBJECTIVE: To compare the complication rates associated with total knee arthroplasty against the types of fixation (hybrid or cemented), using a single total knee design (the anatomic modular knee [AMK] prosthesis). DESIGN: A prospective, nonrandomized, controlled trial. SETTING: University Hospital in London, Ont., a tertiary care teaching centre. PATIENTS: Two groups made up of 484 knees in 395 patients (89 bilateral). INTERVENTIONS: In 260 knees a hybrid configuration (cemented tibia and noncemented femur) was used (group 1). In 224 knees the femoral and tibial components were cemented (group 2). All patellae were cemented in both groups. MAIN OUTCOME MEASURES: Clinical results were assessed by The Knee Society Clinical Rating Scores at 3 months, 6 months and yearly intervals. Radiographic results were determined by 3-foot standing radiographs and at each follow-up visit standing knee radiographs, lateral and skyline views. Radiographs were analysed for alignment, presence or absence of radiolucent lines or changes in the position of the implant. All reoperations and nonoperative complications were recorded. RESULTS: At an average follow-up of 4.8 years, 8 knees (1.6%) required reoperation. An analysis of the complications leading to reoperation demonstrated no difference between the 2 groups. CONCLUSIONS: There was no difference in outcome whether the femoral component was cemented or not. Medium-term results of the AMK are excellent with a very low reoperation rate.  (+info)

Bileaflet mechanical prostheses for aortic valve replacement in patients younger than 65 years and 65 years of age or older: major thromboembolic and hemorrhagic complications. (8/4301)

OBJECTIVE: To determine major thromboembolic and hemorrhagic complications and predictive risk factors associated with aortic valve replacement (AVR), using bileaflet mechanical prostheses (CarboMedics and St. Jude Medical). DESIGN: A case series. SETTING: Cardiac surgical services at the teaching institutions of the University of British Columbia. PATIENTS AND METHODS: Patients 2 age groups who had undergone AVR between 1989 and 1994 were studied. Group 1 comprised 384 patients younger than 65 years. Group 2 comprised 215 patients 65 years of age and older. RESULTS: The linearized rates of major thromboembolism (TE) occurring after AVR were 1.54%/patient-year for group 1 and 3.32%/patient-year for group 2; the rates for major TE occurring more than 30 days after AVR were 1.13%/patient-year for group 1 and 1.55%/patient-year for group 2. The crude rates for major TE occurring within 30 days of AVR were 1.04% for group 1 and 3.72% for group 2. The death rate from major TE in group 1 was 0.31%/patient-year and in group 2 was 0.88%/patient-year. Of the major TE events occurring within 30 days, 100% of patients in both age groups were inadequately anticoagulated at the time of the event, and for events occurring more than 30 days after AVR, 45% in group 1 and 57% in group 2 were inadequately anticoagulated (INR less than 2.0). The overall linearized rates of major hemorrhage were 1.54%/patient-year for group 1 and 2.21%/patient-year for group 2. There were no cases of prosthesis thrombosis in either group. The mean (and standard error) overall freedom from major TE for group 1 patients at 5 years was 95.6% (1.4%) and with exclusion of early events was 96.7% (1.3%); for group 2 patients the rates were 90.0% (3.2%) and 93.7% (3.0%), respectively. The mean (and SE) overall freedom from major and fatal TE and hemorrhage for group 1 patients was 90.1% (2.3%) and with exclusion of early events was 91.2% (2.3%); for group 2 patients the rates were 87.9% (3.1%) and 92.5% (2.9%), respectively. The 5-year rate for freedom from valve-related death for group 1 patients was 96.3% (2.1%) and for group 2 patients was 97.2% (1.2%). CONCLUSION: The thromboembolic and hemorrhagic complications after AVR with bileaflet mechanical prostheses occur more frequently and result in more deaths in patients 65 years of age and older than in patients years younger than 65 years.  (+info)

Prosthesis design is a specialized field in medical device technology that involves creating and developing artificial substitutes to replace a missing body part, such as a limb, tooth, eye, or internal organ. The design process typically includes several stages: assessment of the patient's needs, selection of appropriate materials, creation of a prototype, testing and refinement, and final fabrication and fitting of the prosthesis.

The goal of prosthesis design is to create a device that functions as closely as possible to the natural body part it replaces, while also being comfortable, durable, and aesthetically pleasing for the patient. The design process may involve collaboration between medical professionals, engineers, and designers, and may take into account factors such as the patient's age, lifestyle, occupation, and overall health.

Prosthesis design can be highly complex, particularly for advanced devices such as robotic limbs or implantable organs. These devices often require sophisticated sensors, actuators, and control systems to mimic the natural functions of the body part they replace. As a result, prosthesis design is an active area of research and development in the medical field, with ongoing efforts to improve the functionality, comfort, and affordability of these devices for patients.

A dental prosthesis is a device that replaces missing teeth or parts of teeth and restores their function and appearance. The design of a dental prosthesis refers to the plan and specifications used to create it, including the materials, shape, size, and arrangement of the artificial teeth and any supporting structures.

The design of a dental prosthesis is typically based on a variety of factors, including:

* The number and location of missing teeth
* The condition of the remaining teeth and gums
* The patient's bite and jaw alignment
* The patient's aesthetic preferences
* The patient's ability to chew and speak properly

There are several types of dental prostheses, including:

* Dentures: A removable appliance that replaces all or most of the upper or lower teeth.
* Fixed partial denture (FPD): Also known as a bridge, this is a fixed (non-removable) appliance that replaces one or more missing teeth by attaching artificial teeth to the remaining natural teeth on either side of the gap.
* Removable partial denture (RPD): A removable appliance that replaces some but not all of the upper or lower teeth.
* Implant-supported prosthesis: An artificial tooth or set of teeth that is supported by dental implants, which are surgically placed in the jawbone.

The design of a dental prosthesis must be carefully planned and executed to ensure a good fit, proper function, and natural appearance. It may involve several appointments with a dentist or dental specialist, such as a prosthodontist, to take impressions, make measurements, and try in the finished prosthesis.

Prostheses: Artificial substitutes or replacements for missing body parts, such as limbs, eyes, or teeth. They are designed to restore the function, appearance, or mobility of the lost part. Prosthetic devices can be categorized into several types, including:

1. External prostheses: Devices that are attached to the outside of the body, like artificial arms, legs, hands, and feet. These may be further classified into:
a. Cosmetic or aesthetic prostheses: Primarily designed to improve the appearance of the affected area.
b. Functional prostheses: Designed to help restore the functionality and mobility of the lost limb.
2. Internal prostheses: Implanted artificial parts that replace missing internal organs, bones, or tissues, such as heart valves, hip joints, or intraocular lenses.

Implants: Medical devices or substances that are intentionally placed inside the body to replace or support a missing or damaged biological structure, deliver medication, monitor physiological functions, or enhance bodily functions. Examples of implants include:

1. Orthopedic implants: Devices used to replace or reinforce damaged bones, joints, or cartilage, such as knee or hip replacements.
2. Cardiovascular implants: Devices that help support or regulate heart function, like pacemakers, defibrillators, and artificial heart valves.
3. Dental implants: Artificial tooth roots that are placed into the jawbone to support dental prostheses, such as crowns, bridges, or dentures.
4. Neurological implants: Devices used to stimulate nerves, brain structures, or spinal cord tissues to treat various neurological conditions, like deep brain stimulators for Parkinson's disease or cochlear implants for hearing loss.
5. Ophthalmic implants: Artificial lenses that are placed inside the eye to replace a damaged or removed natural lens, such as intraocular lenses used in cataract surgery.

A joint prosthesis, also known as an artificial joint or a replacement joint, is a surgical implant used to replace all or part of a damaged or diseased joint. The most common types of joint prostheses are total hip replacements and total knee replacements. These prostheses typically consist of a combination of metal, plastic, and ceramic components that are designed to replicate the movement and function of a natural joint.

Joint prostheses are usually recommended for patients who have severe joint pain or mobility issues that cannot be adequately managed with other treatments such as physical therapy, medication, or lifestyle changes. The goal of joint replacement surgery is to relieve pain, improve joint function, and enhance the patient's quality of life.

Joint prostheses are typically made from materials such as titanium, cobalt-chrome alloys, stainless steel, polyethylene plastic, and ceramics. The choice of material depends on a variety of factors, including the patient's age, activity level, weight, and overall health.

While joint replacement surgery is generally safe and effective, there are risks associated with any surgical procedure, including infection, blood clots, implant loosening or failure, and nerve damage. Patients who undergo joint replacement surgery typically require several weeks of rehabilitation and physical therapy to regain strength and mobility in the affected joint.

Prosthesis failure is a term used to describe a situation where a prosthetic device, such as an artificial joint or limb, has stopped functioning or failed to meet its intended purpose. This can be due to various reasons, including mechanical failure, infection, loosening of the device, or a reaction to the materials used in the prosthesis.

Mechanical failure can occur due to wear and tear, manufacturing defects, or improper use of the prosthetic device. Infection can also lead to prosthesis failure, particularly in cases where the prosthesis is implanted inside the body. The immune system may react to the presence of the foreign material, leading to inflammation and infection.

Loosening of the prosthesis can also cause it to fail over time, as the device becomes less stable and eventually stops working properly. Additionally, some people may have a reaction to the materials used in the prosthesis, leading to tissue damage or other complications that can result in prosthesis failure.

In general, prosthesis failure can lead to decreased mobility, pain, and the need for additional surgeries or treatments to correct the problem. It is important for individuals with prosthetic devices to follow their healthcare provider's instructions carefully to minimize the risk of prosthesis failure and ensure that the device continues to function properly over time.

A knee prosthesis, also known as a knee replacement or artificial knee joint, is a medical device used to replace the damaged or diseased weight-bearing surfaces of the knee joint. It typically consists of three components: the femoral component (made of metal) that fits over the end of the thighbone (femur), the tibial component (often made of metal and plastic) that fits into the top of the shinbone (tibia), and a patellar component (usually made of plastic) that replaces the damaged surface of the kneecap.

The primary goal of knee prosthesis is to relieve pain, restore function, and improve quality of life for individuals with advanced knee joint damage due to conditions such as osteoarthritis, rheumatoid arthritis, or traumatic injuries. The procedure to implant a knee prosthesis is called knee replacement surgery or total knee arthroplasty (TKA).

A hip prosthesis, also known as a total hip replacement, is a surgical implant designed to replace the damaged or diseased components of the human hip joint. The procedure involves replacing the femoral head (the ball at the top of the thigh bone) and the acetabulum (the socket in the pelvis) with artificial parts, typically made from materials such as metal, ceramic, or plastic.

The goal of a hip prosthesis is to relieve pain, improve joint mobility, and restore function, allowing patients to return to their normal activities and enjoy an improved quality of life. The procedure is most commonly performed in individuals with advanced osteoarthritis, rheumatoid arthritis, or other degenerative conditions that have caused significant damage to the hip joint.

There are several different types of hip prostheses available, each with its own unique design and set of benefits and risks. The choice of prosthesis will depend on a variety of factors, including the patient's age, activity level, overall health, and specific medical needs. In general, however, all hip prostheses are designed to provide a durable, long-lasting solution for patients suffering from debilitating joint pain and stiffness.

A penile prosthesis is a medical device that is implanted inside the penis to treat erectile dysfunction. It consists of a pair of inflatable or semi-rigid rods, which are surgically placed into the corpora cavernosa (the two sponge-like areas inside the penis that fill with blood to create an erection). The implant allows the person with ED to have a controlled and manual erection suitable for sexual intercourse. This is usually considered as a last resort when other treatments, such as medications or vacuum devices, have failed.

A heart valve prosthesis is a medical device that is implanted in the heart to replace a damaged or malfunctioning heart valve. The prosthetic valve can be made of biological tissue (such as from a pig or cow) or artificial materials (such as carbon or polyester). Its function is to allow for the proper directional flow of blood through the heart, opening and closing with each heartbeat to prevent backflow of blood.

There are several types of heart valve prostheses, including:

1. Mechanical valves: These are made entirely of artificial materials and have a longer lifespan than biological valves. However, they require the patient to take blood-thinning medication for the rest of their life to prevent blood clots from forming on the valve.
2. Bioprosthetic valves: These are made of biological tissue and typically last 10-15 years before needing replacement. They do not require the patient to take blood-thinning medication, but there is a higher risk of reoperation due to degeneration of the tissue over time.
3. Homografts or allografts: These are human heart valves that have been donated and preserved for transplantation. They have similar longevity to bioprosthetic valves and do not require blood-thinning medication.
4. Autografts: In this case, the patient's own pulmonary valve is removed and used to replace the damaged aortic valve. This procedure is called the Ross procedure and has excellent long-term results, but it requires advanced surgical skills and is not widely available.

The choice of heart valve prosthesis depends on various factors, including the patient's age, overall health, lifestyle, and personal preferences.

Artificial limbs, also known as prosthetics, are artificial substitutes that replace a part or all of an absent extremity or limb. They are designed to restore the function, mobility, and appearance of the lost limb as much as possible. Artificial limbs can be made from various materials such as wood, plastic, metal, or carbon fiber, and they can be custom-made to fit the individual's specific needs and measurements.

Prosthetic limbs can be categorized into two main types: cosmetic and functional. Cosmetic prosthetics are designed to look like natural limbs and are primarily used to improve the appearance of the person. Functional prosthetics, on the other hand, are designed to help the individual perform specific tasks and activities. They may include features such as hooks, hands, or specialized feet that can be used for different purposes.

Advances in technology have led to the development of more sophisticated artificial limbs, including those that can be controlled by the user's nervous system, known as bionic prosthetics. These advanced prosthetic devices can provide a greater degree of mobility and control for the user, allowing them to perform complex movements and tasks with ease.

A visual prosthesis, also known as a retinal implant or bionic eye, is a medical device that aims to restore some functional vision in individuals who have severe visual impairment or blindness due to certain eye conditions such as retinitis pigmentosa or age-related macular degeneration.

The prosthesis works by electrically stimulating the remaining viable nerve cells in the retina, which then transmit the signals to the brain via the optic nerve. The device typically consists of a camera that captures visual information, a processor that converts the images into electrical signals, and an electrode array that is implanted onto the surface of the retina.

The electrical stimulation of the retinal cells creates patterns of light in the individual's visual field, allowing them to perceive shapes, edges, and movements. While the level of visual acuity achieved with current visual prostheses is still limited, they can significantly improve the quality of life for some individuals by enabling them to perform tasks such as recognizing objects, navigating their environment, and identifying facial expressions.

Prosthesis implantation is a surgical procedure where an artificial device or component, known as a prosthesis, is placed inside the body to replace a missing or damaged body part. The prosthesis can be made from various materials such as metal, plastic, or ceramic and is designed to perform the same function as the original body part.

The implantation procedure involves making an incision in the skin to create a pocket where the prosthesis will be placed. The prosthesis is then carefully positioned and secured in place using screws, cement, or other fixation methods. In some cases, tissue from the patient's own body may be used to help anchor the prosthesis.

Once the prosthesis is in place, the incision is closed with sutures or staples, and the area is bandaged. The patient will typically need to undergo rehabilitation and physical therapy to learn how to use the new prosthesis and regain mobility and strength.

Prosthesis implantation is commonly performed for a variety of reasons, including joint replacement due to arthritis or injury, dental implants to replace missing teeth, and breast reconstruction after mastectomy. The specific procedure and recovery time will depend on the type and location of the prosthesis being implanted.

Prosthesis fitting is the process of selecting, designing, fabricating, and fitting a prosthetic device to replace a part of an individual's body that is missing due to congenital absence, illness, injury, or amputation. The primary goal of prosthesis fitting is to restore the person's physical function, mobility, and independence, as well as improve their overall quality of life.

The process typically involves several steps:

1. Assessment: A thorough evaluation of the patient's medical history, physical condition, and functional needs is conducted to determine the most appropriate type of prosthesis. This may include measurements, castings, or digital scans of the residual limb.

2. Design: Based on the assessment, a customized design plan is created for the prosthetic device, taking into account factors such as the patient's lifestyle, occupation, and personal preferences.

3. Fabrication: The prosthesis is manufactured using various materials, components, and techniques to meet the specific requirements of the patient. This may involve the use of 3D printing, computer-aided design (CAD), or traditional handcrafting methods.

4. Fitting: Once the prosthesis is fabricated, it is carefully fitted to the patient's residual limb, ensuring optimal comfort, alignment, and stability. Adjustments may be made as needed to achieve the best fit and function.

5. Training: The patient receives training on how to use and care for their new prosthetic device, including exercises to strengthen the residual limb and improve overall mobility. Follow-up appointments are scheduled to monitor progress, make any necessary adjustments, and provide ongoing support.

A neural prosthesis is a type of medical device that is designed to assist or replace the function of impaired nervous system structures. These devices can be used to stimulate nerves and restore sensation, movement, or other functions that have been lost due to injury or disease. They may also be used to monitor neural activity and provide feedback to the user or to a external device.

Neural prostheses can take many forms, depending on the specific function they are intended to restore. For example, a cochlear implant is a type of neural prosthesis that is used to restore hearing in people with severe to profound hearing loss. The device consists of a microphone, a processor, and a array of electrodes that are implanted in the inner ear. Sound is converted into electrical signals by the microphone and processor, and these signals are then used to stimulate the remaining nerve cells in the inner ear, allowing the user to hear sounds.

Other examples of neural prostheses include deep brain stimulation devices, which are used to treat movement disorders such as Parkinson's disease; retinal implants, which are used to restore vision in people with certain types of blindness; and sacral nerve stimulators, which are used to treat urinary incontinence.

It is important to note that neural prostheses are not intended to cure or fully reverse the underlying condition that caused the impairment, but rather to help restore some level of function and improve the user's quality of life.

An ossicular prosthesis is a medical device used to replace one or more of the small bones (ossicles) in the middle ear that are involved in hearing. These bones, known as the malleus, incus, and stapes, form a chain responsible for transmitting sound vibrations from the eardrum to the inner ear.

An ossicular prosthesis is typically made of biocompatible materials such as ceramic, plastic, or metal. The prosthesis is designed to bypass damaged or missing ossicles and reestablish the connection between the eardrum and the inner ear, thereby improving hearing function. Ossicular prostheses are often used in surgeries aimed at reconstructing the middle ear, such as tympanoplasty or stapedectomy, to treat various types of conductive hearing loss.

A dental prosthesis is a device that replaces one or more missing teeth or parts of teeth to correct deficiencies in chewing ability, speech, and aesthetics. It can be removable or fixed (permanent) and can be made from various materials such as acrylic resin, porcelain, metal alloys, or a combination of these. Examples of dental prostheses include dentures, bridges, crowns, and implants.

A dental prosthesis that is supported by dental implants is an artificial replacement for one or more missing teeth. It is a type of dental restoration that is anchored to the jawbone using one or more titanium implant posts, which are surgically placed into the bone. The prosthesis is then attached to the implants, providing a stable and secure fit that closely mimics the function and appearance of natural teeth.

There are several types of implant-supported dental prostheses, including crowns, bridges, and dentures. A single crown may be used to replace a single missing tooth, while a bridge or denture can be used to replace multiple missing teeth. The specific type of prosthesis used will depend on the number and location of the missing teeth, as well as the patient's individual needs and preferences.

Implant-supported dental prostheses offer several advantages over traditional removable dentures, including improved stability, comfort, and functionality. They also help to preserve jawbone density and prevent facial sagging that can occur when teeth are missing. However, they do require a surgical procedure to place the implants, and may not be suitable for all patients due to factors such as bone density or overall health status.

Heart valve prosthesis implantation is a surgical procedure where an artificial heart valve is inserted to replace a damaged or malfunctioning native heart valve. This can be necessary for patients with valvular heart disease, including stenosis (narrowing) or regurgitation (leaking), who do not respond to medical management and are at risk of heart failure or other complications.

There are two main types of artificial heart valves used in prosthesis implantation: mechanical valves and biological valves. Mechanical valves are made of synthetic materials, such as carbon and metal, and can last a long time but require lifelong anticoagulation therapy to prevent blood clots from forming. Biological valves, on the other hand, are made from animal or human tissue and typically do not require anticoagulation therapy but may have a limited lifespan and may need to be replaced in the future.

The decision to undergo heart valve prosthesis implantation is based on several factors, including the patient's age, overall health, type and severity of valvular disease, and personal preferences. The procedure can be performed through traditional open-heart surgery or minimally invasive techniques, such as robotic-assisted surgery or transcatheter aortic valve replacement (TAVR). Recovery time varies depending on the approach used and individual patient factors.

An amputee is a person who has had a limb or extremity removed by trauma, medical illness, or surgical intervention. Amputation may affect any part of the body, including fingers, toes, hands, feet, arms, and legs. The level of amputation can vary from partial loss to complete removal of the affected limb.

There are several reasons why a person might become an amputee:
- Trauma: Accidents, injuries, or violence can result in amputations due to severe tissue damage or irreparable vascular injury.
- Medical illness: Certain medical conditions such as diabetes, peripheral arterial disease, and cancer may require amputation if the affected limb cannot be saved through other treatments.
- Infection: Severe infections that do not respond to antibiotics or other treatments may necessitate amputation to prevent the spread of infection.
- Congenital defects: Some individuals are born with missing or malformed limbs, making them congenital amputees.

Amputees face various challenges, including physical limitations, emotional distress, and social adjustment. However, advancements in prosthetics and rehabilitation have significantly improved the quality of life for many amputees, enabling them to lead active and fulfilling lives.

A blood vessel prosthesis is a medical device that is used as a substitute for a damaged or diseased natural blood vessel. It is typically made of synthetic materials such as polyester, Dacron, or ePTFE (expanded polytetrafluoroethylene) and is designed to mimic the function of a native blood vessel by allowing the flow of blood through it.

Blood vessel prostheses are used in various surgical procedures, including coronary artery bypass grafting, peripheral arterial reconstruction, and the creation of arteriovenous fistulas for dialysis access. The choice of material and size of the prosthesis depends on several factors, such as the location and diameter of the vessel being replaced, the patient's age and overall health status, and the surgeon's preference.

It is important to note that while blood vessel prostheses can be effective in restoring blood flow, they may also carry risks such as infection, thrombosis (blood clot formation), and graft failure over time. Therefore, careful patient selection, surgical technique, and postoperative management are crucial for the success of these procedures.

A maxillofacial prosthesis is a custom-made device used to replace all or part of a facial feature, such as an eye, ear, nose, or lip, that has been lost due to trauma, cancer surgery, or other causes. It is typically made from materials like silicone, acrylic, or nylon and is designed to mimic the appearance and texture of natural skin and tissues.

Maxillofacial prostheses are created by trained professionals called maxillofacial prosthodontists, who have specialized training in the diagnosis, treatment planning, and rehabilitation of patients with facial defects. The process of creating a maxillofacial prosthesis typically involves taking an impression of the affected area, creating a custom-made mold, and then fabricating the prosthesis to fit precisely over the defect.

Maxillofacial prostheses can help improve patients' appearance, self-confidence, and quality of life by restoring their facial symmetry and functionality. They may also help protect the underlying tissues and structures from injury or infection, and can be used in conjunction with other treatments, such as radiation therapy or chemotherapy, to enhance their effectiveness.

An artificial larynx, also known as a voice prosthesis or speech aid, is a device used to help individuals who have undergone a laryngectomy (surgical removal of the larynx) or have other conditions that prevent them from speaking normally. The device generates sound mechanically, which can then be shaped into speech by the user.

There are two main types of artificial larynx devices:

1. External: This type of device consists of a small electronic unit that produces sound when the user presses a button or activates it with a breath. The sound is then directed through a tube or hose into a face mask or a mouthpiece, where the user can shape it into speech.
2. Internal: An internal artificial larynx, also known as a voice prosthesis, is implanted in the body during surgery. It works by allowing air to flow from the trachea into the esophagus and then through the voice prosthesis, which creates sound that can be used for speech.

Both types of artificial larynx devices require practice and training to use effectively, but they can significantly improve communication and quality of life for individuals who have lost their natural voice due to laryngeal cancer or other conditions.

Arthroplasty, replacement, is a surgical procedure where a damaged or diseased joint surface is removed and replaced with an artificial implant or device. The goal of this surgery is to relieve pain, restore function, and improve the quality of life for patients who have severe joint damage due to arthritis or other conditions.

During the procedure, the surgeon removes the damaged cartilage and bone from the joint and replaces them with a metal, plastic, or ceramic component that replicates the shape and function of the natural joint surface. The most common types of joint replacement surgery are hip replacement, knee replacement, and shoulder replacement.

The success rate of joint replacement surgery is generally high, with many patients experiencing significant pain relief and improved mobility. However, as with any surgical procedure, there are risks involved, including infection, blood clots, implant loosening or failure, and nerve damage. Therefore, it's essential to discuss the potential benefits and risks of joint replacement surgery with a healthcare provider before making a decision.

An artificial eye, also known as a prosthetic eye, is a type of medical device that is used to replace a natural eye that has been removed or is not functional due to injury, disease, or congenital abnormalities. It is typically made of acrylic or glass and is custom-made to match the size, shape, and color of the patient's other eye as closely as possible.

The artificial eye is designed to fit over the eye socket and rest on the eyelids, allowing the person to have a more natural appearance and improve their ability to blink and close their eye. It does not restore vision, but it can help protect the eye socket and improve the patient's self-esteem and quality of life.

The process of fitting an artificial eye typically involves several appointments with an ocularist, who is a healthcare professional trained in the measurement, design, and fabrication of prosthetic eyes. The ocularist will take impressions of the eye socket, create a model, and then use that model to make the artificial eye. Once the artificial eye is made, the ocularist will fit it and make any necessary adjustments to ensure that it is comfortable and looks natural.

Penile implantation, also known as a prosthetic penis or penile prosthesis, is a surgical procedure to place devices into the penis to help a person with erectile dysfunction (ED) achieve an erection. The two main types of penile implants are inflatable and semi-rigid rods.

The inflatable implant consists of a fluid-filled reservoir, a pump, and two or three inflatable cylinders in the penis. The semi-rigid rod implant is a pair of flexible rods that are bent into an erect position for sexual intercourse and can be straightened when not in use.

Penile implantation is typically considered as a last resort treatment option for ED, when other treatments such as medications, vacuum constriction devices, or penile injections have failed or are not suitable. The procedure is typically performed by a urologist under general or spinal anesthesia and requires a hospital stay of one to two days.

It's important to note that like any surgical procedure, penile implantation also has risks such as infection, bleeding, mechanical failure, and device malfunction. It is essential for patients to discuss the potential benefits and risks with their healthcare provider before making a decision about this treatment option.

Prosthesis-related infections, also known as prosthetic joint infections (PJIs), are infections that occur around or within a prosthetic device, such as an artificial joint. These infections can be caused by bacteria, fungi, or other microorganisms and can lead to serious complications if not treated promptly and effectively.

Prosthesis-related infections can occur soon after the implantation of the prosthetic device (early infection) or months or even years later (late infection). Early infections are often caused by bacteria that enter the surgical site during the procedure, while late infections may be caused by hematogenous seeding (i.e., when bacteria from another source spread through the bloodstream and settle in the prosthetic device) or by contamination during a subsequent medical procedure.

Symptoms of prosthesis-related infections can include pain, swelling, redness, warmth, and drainage around the affected area. In some cases, patients may also experience fever, chills, or fatigue. Diagnosis typically involves a combination of clinical evaluation, laboratory tests (such as blood cultures, joint fluid analysis, and tissue biopsy), and imaging studies (such as X-rays, CT scans, or MRI).

Treatment of prosthesis-related infections usually involves a combination of antibiotics and surgical intervention. The specific treatment approach will depend on the type and severity of the infection, as well as the patient's overall health status. In some cases, it may be necessary to remove or replace the affected prosthetic device.

"Prosthesis coloring" is not a recognized medical term or concept in the field of prosthetics. However, I can provide you with some context that might help clarify what you are looking for.

In the context of artificial limbs (prostheses), patients may want their devices to match their skin tone as closely as possible to make them less noticeable and more aesthetically appealing. This process is called "prosthetic covering" or "cosmesis," which involves applying custom-made covers, sleeves, or skins over the prosthesis to mimic the appearance of natural skin color and texture.

Prosthetic covering materials can be painted, printed, or dyed to achieve the desired color match. This process is often referred to as "coloring" or "painting the prosthesis." The coloring technique may involve using various shades, tones, and textures to create a natural-looking appearance that blends well with the user's remaining limb or body.

In summary, while there is no formal medical definition for "prosthesis coloring," it likely refers to the process of applying custom colors, shading, or patterns to an artificial limb (prosthesis) to create a more natural and aesthetically pleasing appearance that matches the user's skin tone.

A reoperation is a surgical procedure that is performed again on a patient who has already undergone a previous operation for the same or related condition. Reoperations may be required due to various reasons, such as inadequate initial treatment, disease recurrence, infection, or complications from the first surgery. The nature and complexity of a reoperation can vary widely depending on the specific circumstances, but it often carries higher risks and potential complications compared to the original operation.

A research design in medical or healthcare research is a systematic plan that guides the execution and reporting of research to address a specific research question or objective. It outlines the overall strategy for collecting, analyzing, and interpreting data to draw valid conclusions. The design includes details about the type of study (e.g., experimental, observational), sampling methods, data collection techniques, data analysis approaches, and any potential sources of bias or confounding that need to be controlled for. A well-defined research design helps ensure that the results are reliable, generalizable, and relevant to the research question, ultimately contributing to evidence-based practice in medicine and healthcare.

"Drug design" is the process of creating and developing a new medication or therapeutic agent to treat or prevent a specific disease or condition. It involves identifying potential targets within the body, such as proteins or enzymes that are involved in the disease process, and then designing small molecules or biologics that can interact with these targets to produce a desired effect.

The drug design process typically involves several stages, including:

1. Target identification: Researchers identify a specific molecular target that is involved in the disease process.
2. Lead identification: Using computational methods and high-throughput screening techniques, researchers identify small molecules or biologics that can interact with the target.
3. Lead optimization: Researchers modify the chemical structure of the lead compound to improve its ability to interact with the target, as well as its safety and pharmacokinetic properties.
4. Preclinical testing: The optimized lead compound is tested in vitro (in a test tube or petri dish) and in vivo (in animals) to evaluate its safety and efficacy.
5. Clinical trials: If the preclinical testing is successful, the drug moves on to clinical trials in humans to further evaluate its safety and efficacy.

The ultimate goal of drug design is to create a new medication that is safe, effective, and can be used to improve the lives of patients with a specific disease or condition.

A bioprosthesis is a type of medical implant that is made from biological materials, such as heart valves or tendons taken from animals (xenografts) or humans (allografts). These materials are processed and sterilized to be used in surgical procedures to replace damaged or diseased tissues in the body.

Bioprosthetic implants are often used in cardiac surgery, such as heart valve replacement, because they are less likely to cause an immune response than synthetic materials. However, they may have a limited lifespan due to calcification and degeneration of the biological tissue over time. Therefore, bioprosthetic implants may need to be replaced after several years.

Bioprostheses can also be used in other types of surgical procedures, such as ligament or tendon repair, where natural tissue is needed to restore function and mobility. These prostheses are designed to mimic the properties of native tissues and provide a more physiological solution than synthetic materials.

Bone cements are medical-grade materials used in orthopedic and trauma surgery to fill gaps between bone surfaces and implants, such as artificial joints or screws. They serve to mechanically stabilize the implant and provide a smooth, load-bearing surface. The two most common types of bone cement are:

1. Polymethylmethacrylate (PMMA) cement: This is a two-component system consisting of powdered PMMA and liquid methyl methacrylate monomer. When mixed together, they form a dough-like consistency that hardens upon exposure to air. PMMA cement has been widely used for decades in joint replacement surgeries, such as hip or knee replacements.
2. Calcium phosphate (CP) cement: This is a two-component system consisting of a powdered CP compound and an aqueous solution. When mixed together, they form a paste that hardens through a chemical reaction at body temperature. CP cement has lower mechanical strength compared to PMMA but demonstrates better biocompatibility, bioactivity, and the ability to resorb over time.

Both types of bone cements have advantages and disadvantages, and their use depends on the specific surgical indication and patient factors.

Hip arthroplasty, also known as hip replacement surgery, is a medical procedure where the damaged or diseased joint surfaces of the hip are removed and replaced with artificial components. These components typically include a metal or ceramic ball that replaces the head of the femur (thigh bone), and a polyethylene or ceramic socket that replaces the acetabulum (hip socket) in the pelvis.

The goal of hip arthroplasty is to relieve pain, improve joint mobility, and restore function to the hip joint. This procedure is commonly performed in patients with advanced osteoarthritis, rheumatoid arthritis, hip fractures, or other conditions that cause significant damage to the hip joint.

There are several types of hip replacement surgeries, including traditional total hip arthroplasty, partial (hemi) hip arthroplasty, and resurfacing hip arthroplasty. The choice of procedure depends on various factors, such as the patient's age, activity level, overall health, and the extent of joint damage.

After surgery, patients typically require rehabilitation to regain strength, mobility, and function in the affected hip. With proper care and follow-up, most patients can expect significant pain relief and improved quality of life following hip arthroplasty.

Silicone elastomers are a type of synthetic rubber made from silicone, which is a polymer composed primarily of silicon-oxygen bonds. They are known for their durability, flexibility, and resistance to heat, cold, and moisture. Silicone elastomers can be manufactured in various forms, including liquids, gels, and solids, and they are used in a wide range of medical applications such as:

1. Breast implants: Silicone elastomer shells filled with silicone gel are commonly used for breast augmentation and reconstruction.
2. Contact lenses: Some contact lenses are made from silicone elastomers due to their high oxygen permeability, which allows for better eye health.
3. Catheters: Silicone elastomer catheters are flexible and resistant to kinking, making them suitable for long-term use in various medical procedures.
4. Implantable drug delivery systems: Silicone elastomers can be used as a matrix for controlled release of drugs, allowing for sustained and targeted medication administration.
5. Medical adhesives: Silicone elastomer adhesives are biocompatible and can be used to attach medical devices to the skin or other tissues.
6. Sealants and coatings: Silicone elastomers can be used as sealants and coatings in medical devices to prevent leakage, improve durability, and reduce infection risk.

It is important to note that while silicone elastomers are generally considered safe for medical use, there have been concerns about the potential health risks associated with breast implants, such as capsular contracture, breast pain, and immune system reactions. However, these risks vary depending on the individual's health status and the specific type of silicone elastomer used.

Arthroplasty, replacement, knee is a surgical procedure where the damaged or diseased joint surface of the knee is removed and replaced with an artificial joint or prosthesis. The procedure involves resurfacing the worn-out ends of the femur (thigh bone) and tibia (shin bone) with metal components, and the back of the kneecap with a plastic button. This surgery is usually performed to relieve pain and restore function in patients with severe knee osteoarthritis, rheumatoid arthritis, or traumatic injuries that have damaged the joint beyond repair. The goal of knee replacement surgery is to improve mobility, reduce pain, and enhance the quality of life for the patient.

Dental prosthesis retention refers to the means by which a dental prosthesis, such as a denture, is held in place in the mouth. The retention can be achieved through several methods, including:

1. Suction: This is the most common method of retention for lower dentures, where the shape and fit of the denture base create suction against the gums to hold it in place.
2. Mechanical retention: This involves the use of mechanical components such as clasps or attachments that hook onto remaining natural teeth or dental implants to hold the prosthesis in place.
3. Adhesive retention: Dental adhesives can be used to help secure the denture to the gums, providing additional retention and stability.
4. Implant retention: Dental implants can be used to provide a more secure and stable retention of the dental prosthesis. The implant is surgically placed in the jawbone and acts as an anchor for the prosthesis.

Proper retention of a dental prosthesis is essential for optimal function, comfort, and speech. A well-retained prosthesis can help prevent sore spots, improve chewing efficiency, and enhance overall quality of life.

Prosthesis retention, in the context of medical prosthetics, refers to the secure and stable attachment or fixation of a prosthetic device to the body or the remaining limb (stump) of an amputee. The primary goal of prosthesis retention is to ensure that the artificial limb remains in place during various activities, providing optimal functionality, comfort, and safety for the user.

There are several methods for achieving prosthesis retention, including:

1. Suction sockets: A custom-made socket that creates a seal around the residual limb using a special liner and air pressure to keep the prosthesis in place.
2. Mechanical locks: Devices such as pin locks, lanyard locks, or magnetic couplings that secure the prosthetic limb to the residual limb by engaging with specific components within the socket.
3. Vacuum-assisted suspension: A system that uses vacuum pressure to create a seal between the residual limb and the socket, providing retention and stability.
4. Belt or harness systems: Straps or bands that attach to the prosthesis and wrap around the user's body or sound limb to keep the device in place.
5. Osseointegration: A surgical procedure that involves implanting a metal rod directly into the bone, allowing for a direct connection between the residual limb and the prosthetic device.

Prosthesis retention is crucial for ensuring the successful use of an artificial limb, as it enables users to perform their daily activities with confidence and ease.

The aortic valve is the valve located between the left ventricle (the lower left chamber of the heart) and the aorta (the largest artery in the body, which carries oxygenated blood from the heart to the rest of the body). It is made up of three thin flaps or leaflets that open and close to regulate blood flow. During a heartbeat, the aortic valve opens to allow blood to be pumped out of the left ventricle into the aorta, and then closes to prevent blood from flowing back into the ventricle when it relaxes. Any abnormality or damage to this valve can lead to various cardiovascular conditions such as aortic stenosis, aortic regurgitation, or infective endocarditis.

I'm sorry for any confusion, but "Polyethylene Terephthalates" is not a medical term. It is a type of polymer used in the manufacturing of various products, such as plastic bottles and textile fibers. Medically, you might encounter the abbreviation "PET" or "PET scan," which stands for "Positron Emission Tomography." A PET scan is a type of medical imaging that provides detailed pictures of the body's interior. If you have any medical terms you would like defined, I'd be happy to help!

Treatment outcome is a term used to describe the result or effect of medical treatment on a patient's health status. It can be measured in various ways, such as through symptoms improvement, disease remission, reduced disability, improved quality of life, or survival rates. The treatment outcome helps healthcare providers evaluate the effectiveness of a particular treatment plan and make informed decisions about future care. It is also used in clinical research to compare the efficacy of different treatments and improve patient care.

In the medical field, cementation refers to the process of using a type of dental cement or bonding agent to attach a dental restoration (such as a crown, bridge, or false tooth) to a natural tooth or implant. The cement helps to create a strong and secure attachment, while also helping to seal the restoration and prevent the entry of bacteria and saliva.

Dental cement can be made from various materials, including glass ionomers, resin-modified glass ionomers, zinc phosphate, and polycarboxylate cements. The choice of cement depends on several factors, such as the type of restoration being attached, the location in the mouth, and the patient's individual needs and preferences.

Cementation is an important step in many dental procedures, as it helps to ensure the longevity and success of the restoration. Proper technique and material selection are crucial for achieving a successful cementation that will last for years to come.

Amputation stumps, also known as residual limbs, refer to the remaining part of a limb after it has been amputated. The stump includes the soft tissue and bone that were once part of the amputated limb. Proper care and management of the amputation stump are essential for optimal healing, reducing the risk of complications such as infection or delayed wound healing, and promoting successful prosthetic fitting and use. This may involve various treatments such as wound care, pain management, physical therapy, and the use of specialized medical devices.

A partial denture that is fixed, also known as a fixed partial denture or a dental bridge, is a type of prosthetic device used to replace one or more missing teeth. Unlike removable partial dentures, which can be taken out of the mouth for cleaning and maintenance, fixed partial dentures are permanently attached to the remaining natural teeth or implants surrounding the gap left by the missing tooth or teeth.

A typical fixed partial denture consists of an artificial tooth (or pontic) that is fused to one or two crowns on either side. The crowns are cemented onto the prepared surfaces of the adjacent teeth, providing a stable and secure attachment for the pontic. This creates a natural-looking and functional replacement for the missing tooth or teeth.

Fixed partial dentures offer several advantages over removable options, including improved stability, comfort, and aesthetics. However, they typically require more extensive preparation of the adjacent teeth, which may involve removing some healthy tooth structure to accommodate the crowns. Proper oral hygiene is essential to maintain the health of the supporting teeth and gums, as well as the longevity of the fixed partial denture. Regular dental check-ups and professional cleanings are also necessary to ensure the continued success of this type of restoration.

Stein, J. L.; Flowers, W. C. (1988). "Stance phase control of above-knee prostheses: knee control versus SACH foot design". ... Robotic prosthesis control is a method for controlling a prosthesis in such a way that the controlled robotic prosthesis ... Sup, Frank; Bohara, Amit; Goldfarb, Michael (2008). "Design and control of a powered transfemoral prosthesis". The ... To Design an impedance controller, a regression analysis of gait data is used to parameterize an impedance function. For lower ...
Palatal lift prostheses are designed to address palatopharyngeal incompetence. Although structurally similar to palatal lift ... Palatal lift prostheses are classified as interim or definitive prostheses. An interim palatal lift prosthesis generally ... A palatal lift prosthesis consists of an oral component that stabilizes and secures the prosthesis and an oropharyngeal ... A palatal lift prosthesis is a prosthesis that addresses a condition referred to as palatopharyngeal incompetence. ...
The general design of voice prosthesis is quite consistent, even though there are unique characteristics. A voice prosthesis ... voice prostheses. 'Non-indwelling' voice prostheses can be replaced by the patients themselves, whereas 'indwelling' prostheses ... A voice prosthesis has to be replaced regularly, because after a certain time, the valve flap of the voice prosthesis does not ... A voice prosthesis (plural prostheses) is an artificial device, usually made of silicone that is used in conjunction with voice ...
Prostheses can be created by hand or with computer-aided design (CAD), a software interface that helps creators design and ... Limb prostheses include both upper- and lower-extremity prostheses. Upper-extremity prostheses are used at varying levels of ... Intra-oral prostheses include dental prostheses, such as dentures, obturators, and dental implants. Prostheses of the neck ... Craniofacial prostheses include intra-oral and extra-oral prostheses. Extra-oral prostheses are further divided into hemifacial ...
Prostheses are designed to be as similar as possible to the natural anatomy of each individual. Their purpose is to cover, ... An ocular prosthesis and hair prosthesis can also be classified as craniofacial prostheses. Prostheses are held in place either ... Craniofacial prostheses are prostheses made by individuals trained in anaplastology or maxillofacial prosthodontics who ... Anaplastology Prosthetic Prosthodontics "Facial Prostheses, External". Aetna.com. Retrieved 2015-05-15. Noridian Healthcare ...
The design of new animal prostheses is driven by the needs of individual animals in consideration with environmental ... The Sea Turtle Association of Japan and Kawamura Gishi, a manufacturer of prostheses, helped to design prosthetic flippers for ... and Will Carcieri completed two semesters researching animal prosthesis and designing a 3D-printed prosthetic leg for Doug, a ... An animal prosthesis is a veterinary medical device that takes the place of an absent body part. These devices are created with ...
Some users find that prostheses can get hot in warm and humid climates, though newer breast prostheses are designed to allow ... There are many types of ready made breast prostheses including full or standard prostheses, partial prostheses such a shell ... and attachable breast prostheses (also known as a contact prostheses). Partial breast prosthesis are available in a variety of ... Both custom made and off-the shelf breast prostheses come in varieties that are designed to either be held in a pocket in a ...
A nose prosthesis is a craniofacial prosthesis for someone who no longer has their original nose. Nose prostheses are designed ... A nose prosthesis is only required if the nose cannot be repaired, and there are a variety of reasons this may occur. A benign ... Developing a nose prosthesis requires a balance of artistic and technological skills. This required craftsmanship can be seen ... Although prostheses right now use synthetic material, bioengineered tissue created from 3D-printing is improving. Manufactured ...
This subretinal prosthesis is designed to restore a patients' sight by electrically stimulating the surviving inner retinal ... Photovoltaic retinal prosthesis restores high-resolution responses to single-pixel stimulation in blind retinas v t e (Emerging ... Photovoltaic retinal prosthesis is a technology for restoring sight to patients blinded by degenerative retinal diseases, such ... Implants of a new design with pixel sizes down to 20μm are being developed by Palanker group at Stanford University. Wang, Lele ...
Goodfellow, John; O'Connor, John (1978). "The mechanics of the knee and prosthesis design". Journal of Bone and Joint Surgery. ... After the early unsatisfactory results of the two-component designs, most of the more recent designs feature three components, ... Nearly all designs from pioneers featured two components; these designs have been categorized as incongruent and congruent, ... More modern designs have produced better results, contributing to a renewed interest in total ankle arthroplasty over the past ...
How is it possible to design better prosthesis? Can neurobiology help to develop new remote control robots for helicopters? Can ... Its buildings were designed by the group of Imre Makovecz and it has become an architectural landmark. The now-abandoned campus ... Nano-bio technology, VLSI IC design are other areas of research. Other topics of the center's research are life sciences, in ... This includes theory, numerical modeling, design, fabrication, test and different applications. Their main area of focus is ...
Fite, Kevin; Mitchell, J.; Sup, F.; Goldfarb, M. (2007). "Design and control of an electrically powered knee prosthesis". ... Knowledge of human stiffness variation and stiffness selection has influenced robotic designs as researchers attempt to design ... Van Ham, R.; Sugar, T.G.; Vanderborght, B.; Hollander, K.W.; Lefeber, D. (2009). "Compliant Actuator Designs". IEEE Robotics & ... Van Der Kooij, H.; Veneman, J.; Ekkelenkamp, R. (2006). "Design of a compliantly actuated exo-skeleton for an impedance ...
He runs with this carbon prosthesis specially designed for handisport. He entered INSEP in 2010 . He is a member of the ' ... He arrived in France 12 July 1998, to receive a prosthesis and remained in Montpellier. ...
Designed to hold a breast prosthesis that simulates a real breast. Suitable after a mastectomy. Maternity: A full-cup design ... Designed to offer maximum support and coverage for the entire breast. A practical design for large-busted women. Compare to ... Sports: Designed for athletic activities to provide firm support and minimize breast movement during exercise. Various designs ... Designed to be worn under a wedding dress and are generally strapless or adhesive with a longline or integrated corset design. ...
The Dorfman cardiac prosthesis was designed to have valves coated with tiranium. However, the Alphans' supply of tiranium is ... Early drafts of the script had Helena and Ben Vincent referring to their prosthesis as the 'Bergman' heart, as it was identical ...
... a Specific Prosthesis Designed for Phalloplasty". The Journal of Sexual Medicine. 16 (2): 316-322. doi:10.1016/j.jsxm.2018.11. ... The inflatable penile implant designed for female-to-male gender assignment surgeries became available in the European market ...
... a Specific Prosthesis Designed for Phalloplasty". The Journal of Sexual Medicine. 16 (2): 316-322. doi:10.1016/j.jsxm.2018.11. ... The prosthesis is implanted with a sturdy fixation on pubic bone. Another, thinner malleable implant is intended for ... The malleable (also known as non-inflatable or semi-rigid) penile prosthesis is a pair of rods implanted into the corpora of ... The first IPP prototype presented in 1975 by Scott and colleagues was a three-piece prosthesis (two cylinders, two pumps and a ...
design and develop engineered therapies (for example, neural-integrative prostheses). • adapt computer hardware or software for ... They are a fundamental part of managing, maintaining, and/or designing medical devices, applications, and systems for use in ... They do a lot of research in conjunction with life scientists, chemists, and medical professionals to design medical devices ... molecular bioengineering - designing molecules for biomedical purposes and applying computational methods for simulating ...
Christian designed a prosthesis for writing to allow him to correspond with other veterans; his correspondents included the ...
... and designed a new hand prosthesis, but it didn't get beyond the design phase. Its construction proved to be impractical and a ... The leg prosthesis developed by Eichler featured several advances over competing designs from that time. For example, her leg ... She built on progress made around 1812 by the Berlin dentist Peter Baliff for his design of a hand prosthesis. Baliff had ... "expressly praised the design." She continued her prosthesis development, creating another one for an artificial hand, for which ...
CAD/CAM software are then used to design and manufacture the orthosis, prosthesis or dental implants. Many Chairside dental CAD ... "design intent" (i.e., critical features and their relationship to other features). An example of design intent not evident in ... "3D Scanning and Design". Gentle Giant Studios. Archived from the original on 2020-03-22. Retrieved 2020-03-22. Semi-Automatic ... A modeler creating a CAD model will want to include both Shape and design intent in the complete CAD model. Vendors offer ...
"Design and optimization of a powered ankle-foot prosthesis using a geared five-bar spring mechanism". International Journal of ... This design has been explored in several haptic feedback devices for general force feedback. It has also been used in the ... A novel Ackermann-type steering mechanism design by Zhao et al. utilized a five-bar linkage instead of the regular four-bar ... 2013). "Design of an Ackermann Type Steering Mechanism". Journal of Mechanical Engineering Science. 227. 10.1177/ ...
... was designed to assist surgeons in minimally-invasive placement of knee prostheses. In 2006, the entire patent portfolio ... He previously founded in 2002 Medtech S.A; specialized in the design, development and marketing of surgical assistance robots ...
Charles Edwards designed the metal spinal prosthesis and led the surgical team in performing the surgery. Color television was ...
Medicine can benefit from robotic advances in the design of prostheses for the handicapped. Wiener mentions the Vocorder, a ... He discusses the possibility of creating an automated prosthesis that inputs speech directly into the brain for processing, ...
The scope of design must include a reliable mathematical model as well as the technology in order to properly manufacture and ... A hippocampus prosthesis is a type of cognitive prosthesis (a prosthesis implanted into the nervous system in order to improve ... The prosthesis was in the form of multisite electrodes positioned to record from both the input and output "sides" of the ... Since the prosthesis will be installed inside the brain, the operation itself will be much like a tumor removal operation. ...
... but replaced it with a self-designed cybernetic prosthesis. He also provided Superboy with the visor that duplicated Superman's ... Emil has designed various prosthetic arms with unusual abilities, including one that acted as a sunscreen dispenser. Professor ... having designed and built devices such as a force-field generator. However, as Ruin he dons a "power suit." The suit allows ...
Humayun co-invented the Argus II retinal prosthesis, a retinal implant designed to help patients with genetic retinitis ... "Argus II Retinal Prosthesis System - H110002". U.S. Food and Drug Administration. February 13, 2013. Retrieved February 6, 2016 ... "Argus II Retinal Prosthesis System - H110002". U.S. Food and Drug Administration. February 13, 2013. Retrieved February 6, 2016 ... "Seeing is Believing: USC Eye Institute's retinal prosthesis gives blind woman the gift of sight". YouTube. August 29, 2014. ...
An industrial designer designing a prosthesis would work with a volunteer patient and with a prosthetist throughout this ... Product design and industrial design overlap in the fields of user interface design, information design, and interaction design ... design Core77 Emotional Design by Donald Norman Environmental design Experience design Hague system Interaction design ... Generally, industrial design professionals work in small scale design, rather than overall design of complex systems such as ...
She worked under the mentorship of Jonathan Rubin to design prostheses based on passive dynamic walking. She also learned to ...
Title: Design and Validation of a Powered Knee-Ankle Prosthesis With High-Torque, Low-Impedance Actuators ... Design and Validation of a Powered Knee-Ankle Prosthesis With High-Torque, Low-Impedance Actuators ... place = {Country unknown/Code not available}, title = {Design and Validation of a Powered Knee-Ankle Prosthesis With High- ... The actuator design is guided by design principles that prioritize backdrivability, output torque, and compactness. First, we ...
Stein, J. L.; Flowers, W. C. (1988). "Stance phase control of above-knee prostheses: knee control versus SACH foot design". ... Robotic prosthesis control is a method for controlling a prosthesis in such a way that the controlled robotic prosthesis ... Sup, Frank; Bohara, Amit; Goldfarb, Michael (2008). "Design and control of a powered transfemoral prosthesis". The ... To Design an impedance controller, a regression analysis of gait data is used to parameterize an impedance function. For lower ...
Design and Development of a Novel Upper-Limb Cycling Prosthesis.. Tiele, Akira; Soni-Sadar, Shivam; Rowbottom, Jack; Patel, ... This article describes the processes involved with designing, developing and manufacturing such a prosthesis. The fundamental ... The development of this prosthesis has the potential to enable traumatic upper-limb amputees to participate in cycling for ... If the individual previously participated in cycling, a cycling-specific prosthesis could allow these activities to be ...
Prosthesis Design. 1. 2013. 2110. 0.070. Why? Length of Stay. 1. 2019. 6294. 0.070. Why? ...
Early results of a reverse design prosthesis in the treatment of arthritis of the shoulder in elderly patients with a large ... Likewise, although this prosthesis was first used only in elderly patients (over the age of 76-89 years old), an increasing ... We are increasingly less restrictive in our use of prostheses of this type, in terms of pathology and patient age. An implant ... Influence of glenoid component design and humeral component retroversion on internal and external rotation in reverse shoulder ...
37] Patella clunk is associated with posterior cruciate-sacrificing prosthesis designs in which the peg hits the patella. ... Low friction is the aim in all prosthesis design. Accordingly, opportunities for improvement include developing finer polishing ... Although ceramics are now commonly used in hip prostheses, they still are not used as frequently in knee prostheses. Better ... With unicompartmental prosthesis, it is vitally important to preserve medial tibial plateau for later revision implantation. ...
The building was designed by Julio Amezcua and Francisco Pardo of AT103, and includes a contemporary "prosthesis" that envelops ... An image of the interior of Milan 44, a mixed-use space in the Juarez neighbored developed by ReUrbano and designed by ... In 2010 the duo invested in their first building, a modest structure in Juárez that was designed by noted architect Juan ... The series debuts with a tour of a tranquil upstate New York retreat designed with Passive House principles. ...
Categories: Prosthesis Design Image Types: Photo, Illustrations, Video, Color, Black&White, PublicDomain, CopyrightRestricted 7 ...
He is working with the group to refine prosthesis designs and controllers to meet individualized needs of lower limb amputees. ... His research interests include dynamic simulation and optimization as well as design and control of robotic prostheses. Matt ... Ohio State University in 2018 where his research focused on studying the interactions between amputees and robotic prostheses ...
BA/MA Product Design, BA/MA Fashion Design, BA/MA Textile- and Material-Design, BA/MA Visual Communication, Fine Arts / ... BA/MA Product Design, BA/MA Textile- and Material-Design, BA/MA Fashion Design, BA/MA Visual Communication, Fine Arts / ... BA/MA Product Design, BA/MA Textile- and Material-Design, BA/MA Fashion Design, BA/MA Visual Communication, Fine Arts / ... BA/MA Product Design, BA/MA Textile- and Material-Design, BA/MA Fashion Design, BA/MA Visual Communication, Fine Arts / ...
My group focuses on visual prostheses specifically designed to enable safe orientation and navigation. Starting from the ... I will take the lessons learned and translate them into the design of a high-resolution wide-area cortical visual prosthesis. ... It is the only possible solution for patients in whom the connection between eye and brain is lost so that a prosthesis in the ... Cortical prostheses typically target V1, aiming to implant hundreds or thousands of electrodes, each eliciting the percept of a ...
Watertight design allows protection when showering. Durable abrasion resistant vinyl. Reusable, patented design provides quick ... Moisture protection for plaster and synthetic casts, bandages, rashes, prostheses, splints, burns and lacerations. ... Watertight design *Durable abrasion resistant vinyl *Latex-free. ...
There is an approved protocol on the main stages of goal design prostheses with 3Shape Dental System, which includes the ... and a change in the shape of the prosthesis is possible. Constant wetting and drying of the removable plastic prosthesis should ... Once the printed prosthesis is ready, on the surface of the finished dentures remains an unpolymerized layer of the material to ... Corrections on the denture base of the upper and lower prosthesis.. (10). Digital modeling of the finished removable dentures. ...
All sizes are designed for prosthesis wearers with a residual limb length of 200 mm to 320 mm. The size range covers distal ... Modular socket design, easy to adapt - a fitting with the Varos socket saves valuable time. The number and duration of the ... The Varos socket - size S and M - can be used by prosthesis wearers with a body weight of up to 100 kg. The maximum body weight ... Furthermore, the prosthesis wearer should not have paraesthesia and must have adequate dexterity to operate the handwheels of ...
Prostheses & Orthoses Design. *Rehabilitation Engineering. *Human Biomechanics. *Wearable Sensors. Biography. Dr. Quintero is ... His previous research work entailed the mechanical design and real-time control of a robotic leg for above-knee amputees. His ... He and his research students investigate novel design approaches of hybrid wearable actuators & sensory systems and create ... powered prostheses and exoskeletons) that allow people with mobility impairment such as amputation or stroke to regain their ...
6) Designing, fabricating, and fitting artificial eyes or prostheses associated with the appearance or function of the human ... if they are designed to fit over the cornea of the eye or are otherwise designed for use in or on the eye or orbit. ... The state vision professionals board shall adopt a seal and certificate of suitable design and shall keep a record of its ... A) The state vision professionals board may provide for the examination of applicants by designing, preparing, and ...
Further parameters should be considered in the future design and development of vascular prostheses to reduce the emerging ... Experimental and clinical experience with a gelatin impregnated Dacron prosthesis. Ann Vasc Surg. 1987;1:542-7. DOIPubMedGoogle ... B.H. and A.S.Z. designed the study. T.A.S. and S.M.S. performed the experiments, analyzed the data and wrote the first draft. ... The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. ...
This comfortable bra has soft pads, no wires, pockets for your prostheses and a round back for extra support. Choose this shape ... This absinth green Care bra is especially designed for ladies with prostheses. The stunning play of lines adorning the top of ... This black padded Care bra is especially designed for ladies with prostheses. The stunning play of lines adorning the backside ... This black padded Care bra is especially designed for ladies with prostheses. The stunning play of lines adorning the backside ...
... design, and fabricate dental prosthesis using CAD / CAM software and technology according to surgeons prescription. - Maintain ... If you possess experience in ExoCAD and implant design, this presents an excellent opportunity to bring your traditional dental ... Ability to identify common hardware, software, and design errors relevant to equipment. - Good interpersonal communication ... design background to our dynamic, rapidly growing environment-all while enjoying the journey! If you are motivated and inspired ...
... the team designed a metallic prosthesis impregnated with silver polymers which showed in vitro activity against biofilm. ... Appearance of septic hip prostheses on plain radiographs. AJR Am J Roentgenol. 1994;163:377-380. [PubMed] [DOI] [Cited in This ... During surgery, the same approach that was used for the placement of the prosthesis is performed[37,44]. By incising the deep ... Regarding the medical treatment and the time of placement of the second prosthesis, reports vary from two to several months[70, ...
Robotic prostheses designed to rehabilitate motion for people with disabilities can use e-skins for motion data extraction and ... Recent advancements in big data and digital medicine have enabled AI technologies to optimize e-skin design and create ... Please note that medical information found on this website is designed to support, not to replace the relationship between ... Application of AI technologies in e-skin designing. Reproducing vital human skin properties in artificial skin remains ...
Universal Controller May Lead to Breakthroughs in Robotic Prostheses,.... NASA Spinoff: Design. NASAs Invention Puts a New ... Design Enables Safe Storage of Lithium Ions. This technology charges lithium batteries faster and reduces the risk of device ... The carbon nanotube design for the batterys conductive plate (the anode) enables the safe storage of a large quantity of ... Another anode design involves using pure lithium metal instead of graphite. Compared to graphite anodes, those with lithium ...
But now a 15-patient study of transfemoral, transeptal TMVR - with a prosthesis designed for the mitral position and previously ... Currently, TMVR is approved in the United States only using one device designed for the aortic position and only for treating ... Most of the techniques limited experience with a dedicated mitral prosthesis has involved transapical delivery. ...
Keywords : dental occlusion; dental prosthesis; dental restoration; temporary; dental prosthesis design.. · abstract in ... Rehabilitation with Broadrick flag for restoring occlusal plane and use of type Overlay prosthesis. Rev. Assoc. Paul. Cir. Dent ... in order to discuss the feasibility and clinical effectiveness of prosthesis type overlay and leveling the occlusal technique ...
Articles and product briefs focus on design advances that are shaping the future of health care - improving safety and saving ... Medical Design Briefs features exclusive coverage of the latest medical and bio medical innovations from NASA, its industry ... For veterans who have lost a limb, a prosthesis is a lifeline. An artificial device not only provides mobility and enables ... Part 2: Designing Piezo Handpieces for Ultrasonic Surgery. What Is Pulsed Field Ablation and Why Is It Taking Over ...
... cell-based therapies and retinal prostheses. They also cover clinical trial design and outcome measures. This volume will thus ... VISUAL PROSTHESIS. Electronic Retinal Prostheses. Daniel Palanker. CELL-BASED THERAPIES. iPSC-RPE in Retinal Degeneration: ... Current Status of Clinical Trials Design and Outcomes in Retinal Gene Therapy. Boris Rosin, Eyal Banin, and José-Alain Sahel. ... Trial by "Firsts": Clinical Trial Design and Regulatory Considerations in the Development and Approval of the First AAV Gene ...
"A Powered-on-Passive Approach to the Design of Powered Lower Limb Prostheses." Assistant Professor of Mechanical Engineering ... Goldfarb discussed his research groups 15-year journey exploring the integration of power into lower limb prostheses in a ... The talk shed light on novel perspectives regarding powered lower limb prostheses. ...
... advocates the opinion that the functional duration of such prostheses can be considerably extended if the frames are designed ... Partial dentures - basic design of mandibular dentures, Part 6 In the mandible, under certain circumstances partial dentures ... Partial dentures - basic design of maxilla dentures, Part 5 The designation minor connector comes from American usage. ... The basal contact area is given a convex design for hygienic reasons. As a result, there is no broad contact of the minor ...
... for shoulder prosthesis design improvement, and in the field of regenerative medicine for poor quality or massive tears of ... Lawless, C Lavecchia, , T Greggi, DET Shepherd Design and mechanical evaluation of a novel dynamic growing rod to improve the ... The group has strong knowledge of material design, material processing through conventional and advanced innovative ... dr Guerra will contribute to the design of the reconstruction techniques, and on laying down the specifications for ...
  • In this article, we present the design of a powered knee-ankle prosthetic leg, which implements high-torque actuators with low-reduction transmissions. (nsf.gov)
  • We apply our formulation to the robust design of a series elastic actuator for a powered prosthetic ankle. (nsf.gov)
  • The effect of series elasticity on actuator power and work output: Implications for robotic and prosthetic joint design , Robotics and Autonomous Systems, 2006. (mit.edu)
  • Overview of Limb Prosthetics A limb prosthesis is an artificial limb that replaces a missing body part. (msdmanuals.com)
  • The space is high-ceilinged and bright, and dominated by a treadmill, which is used to test prostheses and exoskeletal devices. (smithsonianmag.com)
  • Limb prostheses are exoskeletal or endoskeletal. (msdmanuals.com)
  • Exoskeletal prostheses have a rigid external plastic structure in the shape of a limb. (msdmanuals.com)
  • Exoskeletal prostheses are more durable and are preferred primarily when the prosthesis may be exposed to harsh environmental conditions, such as impact damage during physical labor or a caustic environment. (msdmanuals.com)
  • In the 1970s several researchers developed a tethered electrohydraulic transfemoral prosthesis. (wikipedia.org)
  • The Varos socket is a socket solution that benefits transfemoral amputees starting in the rehabilitation phase as well as later during treatment with the final prosthesis. (ottobock.com)
  • But now a 15-patient study of transfemoral, transeptal TMVR - with a prosthesis designed for the mitral position and previously tested only transapically - has shown good 30-day results in that MR was essentially abolished with virtually no paravalvular leakage. (medscape.com)
  • Clinical studies indicate that transtibial amputees using conventional prostheses have higher gait metabolic rates than normal. (mit.edu)
  • The development of this prosthesis has the potential to enable traumatic upper- limb amputees to participate in cycling for rehabilitation or recreation . (bvsalud.org)
  • This is a huge advantage, especially for older prosthesis wearers or individuals who are affected by an amputation and have little experience in using a prosthesis. (ottobock.com)
  • Robotic prosthesis control is a method for controlling a prosthesis in such a way that the controlled robotic prosthesis restores a biologically accurate gait to a person with a loss of limb. (wikipedia.org)
  • The Biomechatronics Group uses biologically inspired actuator design to create robust and efficient performance. (mit.edu)
  • To Design an impedance controller, a regression analysis of gait data is used to parameterize an impedance function. (wikipedia.org)
  • With sophisticated sensors and motors, the BiOM mimics the human gait more closely than other prostheses can. (smithsonianmag.com)
  • This paper presents the design and validation of a backdrivable powered knee orthosis for partial assistance of lower-limb musculature, which aims to facilitate daily activities in individuals with musculoskeletal disorders. (nsf.gov)
  • The relationship this imposes for robotic prosthesis the relationship in between force production in response to the motion imposed by the environment. (wikipedia.org)
  • For lower limb robotic prosthesis it is important to be able to determine if the user wants to walk on level ground, up a slope, or up stairs. (wikipedia.org)
  • Each patient that uses a robotic prosthesis that is tuned for this type of control has to have their system trained for them specifically. (wikipedia.org)
  • Prosthesis 14-Foot Quadrupedal 'Anti-Robot' Racing Robot: Manned Exo-Bionic Robotic Exoskeleton Runs 50 MPH! (defensereview.com)
  • On the contrary, conventional ankle-foot prostheses exhibit a passiveelastic response during stance, and consequently, cannot provide net work. (mit.edu)
  • Researchers believe that the main cause for these higher rates is due to the inability of conventional prostheses to provide suffi- cient positive power at terminal stance in the trailing leg to limit heel strike losses of the adjacent leading leg. (mit.edu)
  • In this investigation, we evaluate the hypothesis that a powered ankle-foot prosthesis, capable of providing human-like ankle work and power during stance, can decrease the metabolic cost of transport (COT) compared to a conventional passive-elastic prosthesis. (mit.edu)
  • We find that the powered prosthesis decreases the amputee's metabolic COT on average by 14% compared to the conventional passive-elastic prostheses evaluated (Flex-Foot Ceterus R and Freedom Innovations Sierra), even though the powered system is over twofold heavier than the conventional devices. (mit.edu)
  • Thanks to the use of special lightweight silicones, prostheses in the Adapt Air group are also available in two different weight classes, either 25 percent or 40 percent lighter than a conventional prosthesis of the same size. (amoena.com)
  • The number and duration of the visits to an O&P professional for prosthesis adjustments are significantly reduced compared to treatment with conventional sockets. (ottobock.com)
  • Regarding femoral tracking according to each compartment, externally rotated femoral prosthesis and traditional prosthesis showed 12.1 ± 8.2% and 14.2 ± 8.6% (p = 0.371) on the medial compartment and 8.0 ± 5.8% and 5.2 ± 4.2% (p = 0.059) on the lateral compartment, respectively. (easychair.org)
  • externally rotated femoral prosthesis TKA system with femoral component 3-degree rebuilt showed less roll-back difference between medial and lateral compartments compared to traditional TKA system. (easychair.org)
  • Externally powered myoelectric prostheses provide active hand and joint movement without the need of scapular, humeral, or trunk motion. (msdmanuals.com)
  • Design and analysis of a lightweight lower extremity exoskeleton with novel compliant ankle joints. (nih.gov)
  • A group of dedicated fiber artists wove lightweight, customized breast prostheses for women who have undergone mastectomies. (oracle.com)
  • For example, prostheses can be designed for general daily mobility, for specific activities such as swimming, or for high-impact and competitive sports such as running. (msdmanuals.com)
  • Do you have an ongoing need for or use of medical equipment or assistive devices such as prostheses, mobility aids, or medication pumps? (cdc.gov)
  • In the spring of 2010, he read about a new type of prosthesis being developed by Hugh Herr, head of the biomechatronics group at MIT's Media Lab. (smithsonianmag.com)
  • Current methods for the design of energy efficient series elastic actuators use an optimization formulation that typically assumes known operational requirements. (nsf.gov)
  • Addressing this gap, we propose a convex optimization formulation to design the stiffness of series elastic actuators to minimize energy consumption and satisfy actuator constraints despite uncertainty due to manufacturing of the spring, unmodeled dynamics, efficiency of the transmission, and the kinematics and kinetics of the load. (nsf.gov)
  • The cyclic and often linear torque-angle relationship of locomotion presents the opportunity to innovate on the design of traditional series-elastic actuators (SEAs). (mit.edu)
  • Sensors and other inputs detect muscle movement of the residual limb or upper body and control powered actuators that provide greater grasp force than body-powered prostheses. (msdmanuals.com)
  • In a collaboration between Swedish and Italian researchers, the aim was to analyse how the brain interprets information from a virtual experience of touch, created by a finger prosthesis with artificial sensation. (lu.se)
  • The actuator design is guided by design principles that prioritize backdrivability, output torque, and compactness. (nsf.gov)
  • A four-bar knee joint measurement walking system for prosthesis design. (nih.gov)
  • So, can Prosthesis be effectively armored and weaponized for the future battlefield? (defensereview.com)
  • Activity-specific prostheses are designed to allow participation in activities that would otherwise damage the patient's residual limb or everyday prosthesis, or when the everyday prosthesis would not function effectively. (msdmanuals.com)
  • S. K. Au, J. Weber, H. M. Herr and E.C. Martinez-Villapando, Powered ankle-foot prosthesis for the improvement of amputee ambulation, IEEE Engineering in Medicine and Biology International Conference, Lyon, France, pp. 3020-3026, 2007. (mit.edu)
  • Body-powered prostheses are the most often prescribed because they tend to be less expensive, more durable, and require less maintenance. (msdmanuals.com)
  • Prosthesis is a sports machine and requires a trained athlete to operate. (defensereview.com)
  • A harness-cable system suspends the prosthesis and captures scapular and humeral motion to operate the hook, hand, or elbow joint. (msdmanuals.com)
  • This study aimed to review the principals involved, clinical indication, planning, in order to discuss the feasibility and clinical effectiveness of prosthesis type overlay and leveling the occlusal technique Broadrick, identifying their indications, advantages and disadvantages through the presentation of a clinical case. (bvsalud.org)
  • These "knockers" followed patterns from Knitted Knockers , a nonprofit that designs patterns and distributes prostheses to breast cancer survivors. (oracle.com)
  • Renée Rossouw's Pattern Diary designs for Bosa Ceramics play with different patterns, identities and compositions. (designindaba.com)
  • To improve the quality of restored vision generated by current visual prostheses, recent studies used deep learning to predict the electrode activation patterns required to elicit a desired visual percept. (uni-bremen.de)
  • The prosthesis was made to touch various objects, which generate different patterns of electrical signals. (lu.se)
  • Endosseous dental implants are titanium fixtures that are placed in edentulous ridges to serve as support for fixed or removable dental prostheses used to restore dentition. (medscape.com)
  • There are many commercial brands of dental implants that may vary slightly in design, surface treatment, and other qualities. (medscape.com)
  • Hence, the primary aim is to prevent perioperative infections by identifying risk factors, such as type of prosthesis. (cdc.gov)
  • The prosthetist helps patients choose the type of prosthesis and options they need to accomplish their goals. (msdmanuals.com)
  • An EMG-position controlled system for an active ankle-foot prosthesis: An initial experimental study, IEEE 9th International Conference on Rehabilitation Robotics (ICORR): Frontiers of the Human-Machine Interface, Chicago, IL, pp. 375-379, Jun. (mit.edu)
  • The aim of this paper is to create a system that enables power transmission non-backdrivability in a hand prosthesis with a single actuator. (asmejmr.org)
  • Well, another such system is apparently being developed right here in this country (USA) called Prosthesis. (defensereview.com)
  • The prosthesis is shown to deliver the high mechanical power and net positive work observed in normal human walking. (mit.edu)
  • To inform new designs and functionality of compliant mechanisms, a better understanding of nonlinear-elastic materials is necessary and, in particular, their mechanical properties that often differ in tension and compression. (asmejmr.org)
  • In a multipart design, various mechanical linkages are used to facilitate the joining of the different components and mechanical integrity of the joint. (medscape.com)
  • If the individual previously participated in cycling, a cycling-specific prosthesis could allow these activities to be integrated into rehabilitation methods . (bvsalud.org)
  • The plan and delineation of prostheses in general or a specific prosthesis. (bvsalud.org)
  • The human hand is complex, and often two different prostheses are necessary to provide optimal function for general daily activities and for specific activities. (msdmanuals.com)
  • The Red Dot Award jury presented the Adapt Air with the Red Dot Award 2020 for product design . (amoena.com)
  • Developed by "mad scientist" Jonathan Tippett, and billed by him as "the anti-robot", Prosthesis is essentially a 14-foot (14″) exo-bionic manned exoskeleton "racing robot" that can run 50 mph, and up to 20 mph SILENTLY, which is interesting. (defensereview.com)
  • Using a high-resolution analysis of how individual neurons and their connected brain networks processed this touch information, designed by neurocomputational scientist Alberto Mazzoni and physics scientist Anton Spanne, the groups got an unexpected insight into the brain representations of the external world experienced through touch. (lu.se)
  • The concept, which is designed to provide the highest possible wearing comfort and a natural appearance, was especially recognized by the award judges. (amoena.com)
  • Endoskeletal prostheses have a central inner skeletal structure that includes modular components and couplings that provide angular adjustably in all three planes and facilitate removal of damaged components. (msdmanuals.com)
  • For the Italian group, and for all others involved in research on advanced prostheses, the method provides a new tool for exploring the sensations the prostheses can provide. (lu.se)
  • The sample is designed to provide a larger representation of population groups of special policy interest to the Federal Government than would have been obtained from a random sample. (cdc.gov)
  • This means that over the stance phase, depending on the speed the subject is moving, there is a derivable torque angle relationship that can be used to control a lower limb prosthesis. (wikipedia.org)
  • We also identify a tradeoff with actuator torque density that can be addressed by improving the motor's thermal environment, motivating our design of a custom Brushless DC motor with encapsulated windings. (nsf.gov)
  • The transmucosal abutment is the link between the implant body and the prosthesis, usually made of titanium. (medscape.com)
  • When Herr returned to the rocks (in Arizona in 1986) on prostheses he designed, his climbing actually improved. (smithsonianmag.com)
  • Modular socket design, easy to adapt - a fitting with the Varos socket saves valuable time. (ottobock.com)
  • Biomechanical design of a powered ankle-foot prosthesis, IEEE 10th International Conference on Rehabilitation Robotics, pp. 298-303, 2007. (mit.edu)
  • Design of rehabilitation and physical assistance robots that work safely and efficiently despite uncertain operational conditions remains an important challenge. (nsf.gov)
  • Le ministère de la Santé, l'Autorité chargée de la reconstruction et de la remise en état après le séisme [Earthquake Reconstruction and Rehabilitation Authority] et l'Organisation mondiale de la Santé ont organisé conjointement une riposte complète, comprenant des opérations de secours, de relèvement et d'hospitalisation, des interventions chirurgicales, la construction d'infrastructures, l'élaboration de directives techniques sur l'amélioration de la qualité des soins, et le déploiement et la formation de personnel. (who.int)
  • To address this problem, a University of Maryland (UMD) research team led by Po-Yen Chen, Professor of Chemical and Biomolecular Engineering, has created a machine learning (ML) framework to facilitate the construction of a prediction model, which can be utilized for two design tasks: (1) predict sensor performance based on a fabrication recipe and (2) recommend feasible fabrication recipes for adequate strain sensors. (techbriefs.com)
  • This report summarizes the findings from three rounds of testing designed to evaluate questions concerning adults with chronic healthcare needs (ACHCN). (cdc.gov)
  • Comfort + technology promotes temperature balance between the body and the prosthesis, reducing perspiration. (amoena.com)
  • Many designs also have a tapered shape that creates a wedging effect as the implant body is seated. (medscape.com)
  • For lower limb prosthesis the impedance function looks similar to the following equation. (wikipedia.org)
  • Actuator efficiency is an important factor in design of powered legged robots. (mit.edu)
  • Based on this invention, three symmetrical architectures have been designed and implemented as flexure-based pivots. (asmejmr.org)
  • Since the invention of the first film-covered silicone breast prosthesis , our mission has been to increase women's confidence after breast surgery and to guide and support them in their individual lives. (amoena.com)
  • While Prosthesis is designed for racing, DR's more interesed in its potential military Special Operations Forces (SOF) applications. (defensereview.com)
  • To test the hypothesis, a powered prosthesis is built that comprises a unidirectional spring, configured in parallel with a force-controllable actuator with series elasticity. (mit.edu)
  • The series debuts with a tour of a tranquil upstate New York retreat designed with Passive House principles. (metropolismag.com)
  • Planificación y delineamiento de las prótesis en general o de una prótesis específica. (bvsalud.org)
  • The Adapt Air breast prosthesis, our latest premium breast care product, not only impresses our customers with its perfect fit and customized comfort, but also the jury of the renowned Red Dot Award. (amoena.com)
  • Launched a few months ago, the Adapt Air breast prosthesis enhances Amoena's premium product portfolio. (amoena.com)
  • Most of the technique's limited experience with a dedicated mitral prosthesis has involved transapical delivery. (medscape.com)
  • With massive suspension travel and a trained human pilot at the controls, Prosthesis will be capable of tackling any terrain at top speed. (defensereview.com)
  • The generalized methods presented highlight the utility of the model for designing and predicting the behavior of other compliant mechanism geometries and different nonlinear-elastic materials. (asmejmr.org)
  • The state-based model of the CSEA is introduced and the implementation of the CSEA mechanism in a powered knee prosthesis is detailed. (mit.edu)
  • Manufacturers and designers from all over the world can submit their designs to the competition in 49 categories. (amoena.com)
  • Design and Development of a Novel Upper-Limb Cycling Prosthesis. (bvsalud.org)
  • Hybrid prostheses are typically prescribed for higher level upper-limb amputations. (msdmanuals.com)
  • Initial experimental study on dynamic interaction between an amputee and a powered ankle-foot prosthesis, Workshop on Dynamic Walking: Mechanics and Control of Human and Robot Locomotion, Ann Arbor, MI, May 2006. (mit.edu)
  • Also interesting is the fact that Prosthesis can run for 30 minutes to two hours at a time, thanks to its 96V x 20kWh lithium ion battery power supply, which means it can cover a lot of ground very quickly compared to your run-of-the-mill bipedal human. (defensereview.com)
  • Simulations suggest that a CV-SEA will require less energy that an SEA or IV-SEA when used in a knee prosthesis during level-ground walking. (mit.edu)
  • Finally, by designing a 7:1 planetary gearset directly into the stator, the actuator has a high package factor that reduces size and weight. (nsf.gov)
  • This article describes the processes involved with designing, developing and manufacturing such a prosthesis . (bvsalud.org)
  • Reusable, patented design provides quick, one-hand application. (walgreens.com)
  • In vitro wear testing of a contemporary design of reverse shoulder prosthesis. (ukri.org)
  • Radial head prostheses may lead to excessive wear of and pain in the capitellum. (medscape.com)
  • Passive prostheses assist in balance, stabilization of objects (such as paper when writing), or recreational/vocational activities. (msdmanuals.com)