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  • pedicle screw
  • Pedicle screw malposition may lead to serious vascular and neurologic complications. (ijssurgery.com)
  • Furthermore, recognizing this pattern is critical in order to optimize pedicle screw instrumentation and may allow for some leeway adjustments in the pedicle screw trajectory regardless of the methods of implantation. (ijssurgery.com)
  • Pedicle screw instrumentation has been widely used in the surgeries for AIS patients. (ijssurgery.com)
  • 2- 4 A thorough understanding of vertebrae anatomy is crucial for safe pedicle screw implantation. (ijssurgery.com)
  • 5- 10 Vertebral morphology of the normal spine has been extensively studied and has provided valuable information regarding pedicle screw instrumentation. (ijssurgery.com)
  • This report includes an overview of spinal disorders and available treatment options as well as an analysis of the U.S. markets for spinal fusion instrumentation products (including anterior column plating systems, interbody fusion devices, and posterior spinal fixation implants) and posterior dynamic stabilization products (including interspinous process spacers, pedicle screw systems, and facet replacement technologies). (giiresearch.com)
  • helical
  • A screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. (wikipedia.org)
  • A screw is a type of fastener, sometimes similar to a bolt (see Differentiation between bolt and screw below), typically made of metal, and characterized by a helical ridge, known as a male thread (external thread) or just thread. (wikipedia.org)
  • Other screw threads are designed to cut a helical groove in a softer material as the screw is inserted. (wikipedia.org)
  • More generally, screw may mean any helical device, such as a clamp, a micrometer, a ship's propeller or an Archimedes' screw water pump. (wikipedia.org)
  • Nuts
  • So, as a general rule, when buying a packet of "screws" you would not expect nuts to be included, but bolts are often sold with matching nuts. (wikipedia.org)
  • distal
  • The bone screw includes (1) a distal threaded portion having a first orientation, (2) a proximal head portion, and (3) an intermediate portion including a compressive member, such as but not limited to a single or double helix, integral with. (google.com)
  • As the ridged part of the screw bites in the walls of the drill hole in the distal fragment, the unthreaded part is free to move within the drill hole in the proximal fragment, thus compressing the two pieces of bone together. (thefreedictionary.com)
  • The larger part of the bump is a normal part of the head of the first metatarsal bone that has tilted sideways to stick out at its distal (far) end. (wikipedia.org)
  • proximal
  • The hallux valgus angle (HVA) is the angle between the longitudinal axes of the proximal phalanx and the first metatarsal bone of the big toe. (wikipedia.org)
  • pins
  • It typically consists of a set of bone fixation plates, screws, wires, and pins made of materials that cannot be chemically degraded or absorbed via natural body processes (e.g., implant grade metal, surgical steel, titanium alloy, or carbon fibre). (nih.gov)
  • fracture
  • Such splints are fastened at their opposite ends to respective undamaged portions of the broken bone, specifically to opposite sides of the fracture. (google.com)
  • A bone fixation screw system and method of utilization thereof is provided for a bone having first and second sections with a fracture interface there between. (google.com)
  • Mandibular fracture, also known as fracture of the jaw, is a break through the mandibular bone. (wikipedia.org)
  • Condylar fractures are deep, so it is rare to see significant swelling although, the trauma can cause fracture of the bone on the anterior aspect of the external auditory meatus so bruising or bleeding can sometimes be seen in the ear canal. (wikipedia.org)
  • If the bones fracture and overlie each other there may be shortening of the height of the ramus. (wikipedia.org)
  • Spondylolysis is typically caused by a stress fracture of the bone, and is especially common in adolescents who over-train in activities. (wikipedia.org)
  • A rib fracture is a break in a rib bone. (wikipedia.org)
  • connector
  • The anchoring assemblies each include a support collar and a split retention ring that cooperate to allow adjustment of the bone-engaging member and corresponding connector during surgery. (google.ca)
  • elastic
  • The tightening of a fastener's screw thread is comparable to driving a wedge into a gap until it sticks fast through friction and slight elastic deformation. (wikipedia.org)
  • torque
  • For example, when the screw will be subject to counterclockwise torque (which would work to undo a right-hand thread), a left-hand-threaded screw would be an appropriate choice. (wikipedia.org)
  • invention
  • In particular, the invention relates to a bone screw having an elongate cylinder body of predetermined length, a threaded end portion terminating with a tip, and an opposite screw-handling end. (google.com)
  • The coordination of various machine elements including leadscrew, slide rest, and change gears was the technological advance that allowed the invention of the screw-cutting lathe, which was the origin of single-point threading as we know it today. (wikipedia.org)
  • ligament
  • Bio-absorbable screws are automatically absorbed in body and are widely used in anterior cruciate ligament surgery. (coherentmarketinsights.com)
  • However, high cost of bio-absorbable implants and screws, which are not affordable to population of low and middle income economies and slow regeneration rate of new ligament are restraining growth of the global bio-absorbable bone screw market. (coherentmarketinsights.com)
  • The portion of the patellar ligament is then drawn through these tunnels in the bone and will be affixed to the bone via screws. (wikipedia.org)
  • embodiment
  • In a further embodiment, the screw-handling end ( 3 ) is formed with a plurality of flats ( 8 ) extending parallel to the axis of the cylinder body ( 2 ) at predetermined spacings. (google.com)
  • bore
  • In order that the screw member can be pivoted to at least one side by an enlarged angle, the edge bounding the free end of the second bore ( 7 ) viewed relative to the axis of the first bore ( 6 ) is of asymmetric construction. (google.es)
  • The barrel is adapted for insertion into a transsectionally extending bore into the bone in at least the second section of the bone. (google.com)
  • Clamp
  • U-plates can also be used as they clamp on to the superior aspect of the ribs using locking screws. (wikipedia.org)
  • rotational
  • When a force (e.g., rotational or axial) is applied to the bone screw in the first direction, the spaces between the surfaces of the compressive member increase, due to the difference in orientation. (google.com)
  • In most applications, the lead of a screw thread is chosen so that friction is sufficient to prevent linear motion being converted to rotary, that is so the screw does not slip even when linear force is applied, as long as no external rotational force is present. (wikipedia.org)
  • thread
  • the thread is not a simple V as in the standard thread but has one side of the groove at right angles to the direction of the screw and the other side at a 45° angle. (thefreedictionary.com)
  • A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. (wikipedia.org)
  • A screw thread is the essential feature of the screw as a simple machine and also as a fastener. (wikipedia.org)
  • The mechanical advantage of a screw thread depends on its lead, which is the linear distance the screw travels in one revolution. (wikipedia.org)
  • In all of these applications, the screw thread has two main functions: It converts rotary motion into linear motion. (wikipedia.org)
  • Some screw threads are designed to mate with a complementary thread, known as a female thread (internal thread), often in the form of a nut or an object that has the internal thread formed into it. (wikipedia.org)
  • A screw is an externally threaded fastener capable of being inserted into holes in assembled parts, of mating with a preformed internal thread or forming its own thread, and of being tightened or released by torquing the head. (wikipedia.org)
  • An externally threaded fastener that has thread form which prohibits assembly with a nut having a straight thread of multiple pitch length is a screw. (wikipedia.org)
  • Threading is the process of creating a screw thread. (wikipedia.org)
  • For example, thread lapping following thread grinding would fall only on the extreme toolroom end of the spectrum, while thread rolling is a large and diverse area of practice that is used for everything from microlathe leadscrews (somewhat pricey and very precise) to the cheapest deck screws (very affordable and with precision to spare). (wikipedia.org)
  • head
  • A bone screw having a screw member (1) possessing a threaded section (2) and a head (3) and a receiving part (5) at the head end for receiving a rod to be connected to the bone screw is provided. (google.es)
  • cervical bone screw, Centering Sleeve for DHS Wrench, Cobra Head Plate For 4.5mm Screws. (indianyellowpages.com)
  • A screw will usually have a head on one end that contains a specially formed shape that allows it to be turned, or driven, with a tool. (wikipedia.org)
  • It is essentially a screw whose spherical head is enclosed on a housing, which allows the screw a range of motion along several different axes relative to the housing. (wikipedia.org)
  • plate
  • 2. The instrument assembly of claim 1 , said plate locating instrument is further adapted to be secured to said bone plate prior to implantation of said bone plate into a body of a patient. (google.com.au)
  • The plate is positioned over the rib and screwed into the bone at the desired position. (wikipedia.org)
  • system
  • The system includes a cannulated bone screw that has a drive connection that engages with a drive structures of a screwdriver. (findownersearch.com)
  • The company's first commercial product, the OrthoFuzIon Bone Screw System, utilizes an advanced silver ion technology that allows for rapid and sustained ionization of the silver and creation of an antimicrobial zone around the screw to prevent microbial colonization of the implanted devices. (businesswire.com)
  • rotation
  • The advantages over the conventional techniques are reducing the chance of accidental intra-articular extension of the osteotomy, eliminating the potential risk of unwanted translation or rotation of the bone, ability to readjust the alignment after surgery without the need to remove the bone screws. (wikipedia.org)
  • device
  • a common mnemonic device for remembering this when working with screws or bolts is "righty-tighty, lefty-loosey. (wikipedia.org)
  • body
  • Our OrthoFuzIon coating creates a galvanic zone of bacterial inhibition surrounding the implanted screw within the body," said founder, President and CEO Paul Chirico . (businesswire.com)
  • Bolt
  • There is no universally accepted distinction between a screw and a bolt. (wikipedia.org)
  • A simple distinction that is often true, although not always, is that a bolt passes through a substrate and takes a nut on the other side, whereas a screw takes no nut because it threads directly into the substrate (a screw screws into something, a bolt bolts several things together). (wikipedia.org)
  • This distinction is consistent with ASME B18.2.1 and some dictionary definitions for screw and bolt. (wikipedia.org)
  • The issue of what is a screw and what is a bolt is not completely resolved with Machinery's Handbook distinction, however, because of confounding terms, the ambiguous nature of some parts of the distinction, and usage variations. (wikipedia.org)
  • implant
  • It consists of two modules: The VariAx Hand Locking Plate Module is a plating system which offers the benefits of variable angled locking plates and screws for 1.7mm and 2.3mm implant sizes. (docplayer.net)
  • The Profyle Hand Standard Plating Module builds upon the strong foundation of the Profyle, which has been in the market since It is a non-locking plate and screw module for 1.2mm, 1.7mm and 2.3mm implant sizes. (docplayer.net)
  • A dental implant is a whole replacement for a missing tooth that includes a prosthetic tooth root which is surgically embedded into jaw bone. (allneedzdental.com)
  • Once a natural tooth is gone, there's no nerve in the jaw bone, which makes implant surgery easier than you might imagine. (allneedzdental.com)
  • normal
  • As the bone heals, strengthening can begin and rehabilitation back to normal activities is progressed. (givensportspt.com)
  • The goal of physical therapy is to return you to normal activities after the normal course of bone healing. (givensportspt.com)
  • A traction splint most commonly refers to a splinting device that uses straps attaching over the pelvis or hip as an anchor, a metal rod(s) to mimic normal bone stability and limb length, and a mechanical device to apply traction (used in an attempt to reduce pain, realign the limb, and minimize vascular and neurological complication) to the limb. (wikipedia.org)
  • Foot
  • The movement uses 51 components anchored to a central screw with automatic winding and a 90-hour power reserve - and is 100% Swiss made on a 65-foot-long automated assembly line in clean-room conditions, without human intervention. (wikipedia.org)
  • general
  • He acquired great notoriety because of his skill and experience, thanks to his case reports of hemorrhage, lacrimal fistula and operation on the frenum, for his treatise on bone diseases and especially for his general treatise on surgical operations, on which he worked for 12 years and which was finished after his death by François-Dominique Lesné (1722-1800). (wikipedia.org)