JointsInjuriesWristNervesLigamentsDevelop in the tendon sheathForearmSheathsRuptureCarpalSheath that surroundsMuscles and tendonsDistalStiffnessThumbLigamentSprainBoneAchillesNerveProximalSymptomsDeformityLacerationToesInjuryConnectiveMalletContracturesUlnarTenosynovitisExercisesOccurFracturePulleyDiagnosisSwellingSurgeryGraftInfectionCompressionIntrinsicRadialStraighten
Joints14
- therefore, the tendons are affected by the same disease process as joints. (medscape.com)
- This type affects the small joints at the ends of the fingers and toes. (medicalnewstoday.com)
- This is the most severe and destructive type of PsA, and it primarily affects the joints of the fingers, hands, wrists, and feet. (medicalnewstoday.com)
- Your arms are also made up of muscles, joints, tendons, and other connective tissue. (icdlist.com)
- Reduced movement of joints (contractures) caused by shortening of the connective tissues that attach muscles to bone (tendons) usually develops during childhood in people with POIKTMP. (medlineplus.gov)
- It results in pain, stiffness, and swelling of the joints and the ligaments and tendons around them. (epnet.com)
- Typically, a custom-made splint is used to hold the MCP joint of the involved finger at 10-15° of flexion, leaving the PIP and distal interphalangeal (DIP) joints free. (medscape.com)
- The finger has complicated anatomy because of the tendons that intertwine and cross the joints. (emedicinehealth.com)
- There are collateral ligaments on each side of the MCP, PIP, and DIP joints in the fingers. (emedicinehealth.com)
- There are many common finger injuries that involve the tendons and joints of the finger that can cause deformity and disability, but do not affect the ligaments. (emedicinehealth.com)
- Ganglion cysts are fluid-filled lumps that can develop near joints or tendons in the wrists and hands, such as at the base of fingers. (medicalnewstoday.com)
- Ganglion cysts are fluid-filled sacs that form on tendons or joints. (bestfinance-blog.com)
- The rigid parts of the hands are 3D-printed in HIPS while the flexible parts, including the joints and the tendons, are made from polyurethane rubber. (lu.se)
- Tendon adhesions result in an extensor lag of metacarpophalangeal (MP) joints or decreased active finger flexion. (medscape.com)
Injuries18
- What are the Signs or Symptoms of Extensor Tendon Injuries? (orthopedicsurgeryandsportsmed.com)
- In order to diagnose extensor tendon injuries, your doctor may ask questions about your pain and other symptoms and perform a physical examination of the affected hand. (orthopedicsurgeryandsportsmed.com)
- How are Extensor Tendon Injuries Treated? (orthopedicsurgeryandsportsmed.com)
- For severe injuries involving a major laceration or complete tendon rupture, surgical options such as tendon repair, tendon reconstruction, extensor indicis proprius/extensor pollicis longus (EIP/EPL) tendon transfer, or bony avulsion fixation may be performed. (orthopedicsurgeryandsportsmed.com)
- Management and functional outcomes of combined injuries of flexor tendons, nerves, and vessels at the wrist. (medscape.com)
- Finger sprains are injuries to ligaments in the digits of the hand. (emedicinehealth.com)
- Sprains are injuries to ligaments or tendons. (emedicinehealth.com)
- Acute finger sprains are caused by injuries, either due to a fall or a direct blow or twist to the finger or hand. (emedicinehealth.com)
- This is especially true if there are other associated injuries involving the joint or the finger, including fracture and dislocation. (emedicinehealth.com)
- He also has expertise in wrist and elbow arthroscopy and complex wrist and elbow trauma, including fracture care, elbow replacement, and tendon and ligament injuries. (stlukesonline.org)
- Most injuries to the finger involve a direct blow to the tip or forcing the finger beyond its usual range of motion. (healthychildren.org)
- Injuries to the hands and fingers are common. (medicalnewstoday.com)
- Injuries to the fingers can cause pain, swelling, and reduced mobility. (medicalnewstoday.com)
- Doctors do not fully understand what causes trigger finger, but hand injuries and certain medical conditions such as diabetes and rheumatoid arthritis may increase a person's risk of developing it. (medicalnewstoday.com)
- Injuries of the flexor finger apparatus are very common. (bvsalud.org)
- The primary use of the autologous tendon graft can be used in the reconstruction of obsolete deep-flexor injuries in Zone II, but also in primary treatments. (bvsalud.org)
- The transplanted tendon is smaller in diameter than the deep flexor, so it can also be used for older injuries when the tendon sheath is in partially missing. (bvsalud.org)
- In addition to having technical expertise, experienced hand surgeons must have precise knowledge of flexor tendon anatomy to guide appropriate treatment of injuries to the flexor tendon system. (medscape.com)
Wrist27
- The surgical treatments for RA of the hand and wrist include synovectomy, tenosynovectomy, tendon realignment, reconstructive surgery or arthroplasty, and arthrodesis. (medscape.com)
- The affected sites are (1) the dorsal and volar aspects of the wrist, because the tendons are covered by synovium as they pass under the flexor and extensor retinaculum and under the wrist, and (2) the volar aspect of the digits, because the tendons are covered by synovium in the fibro-osseous canals in the finger. (medscape.com)
- Medical finger Wrist Orthotics Rehabi. (alisa.shop)
- Relay on the tension spring on the aluminum bracket to help fingers rehabilitation while keeping fingers and wrist in the right position. (alisa.shop)
- Specially design for finger rehabilitation training, the functional exercise of hand thumb long tendons, prevention and correction of the contracture stiff, the wrist extensor and refers to stretch myoparalysis (called lateral patching paralysis). (alisa.shop)
- Suitable for patients with hemiplegia dysfunction, the wrist and fingers to train, to improve muscle strength and increase in the related parts of the joint range of motion. (alisa.shop)
- They allow you to open your hands and move or straighten your wrist, fingers, and thumb. (orthopedicsurgeryandsportsmed.com)
- Injury to the extensor tendon may result in a tendon tear or tendon rupture, and the condition can greatly affect the grip, fine motor function of the hand, and stability of the wrist. (orthopedicsurgeryandsportsmed.com)
- Relieve wrist muscles and stretch tendons. (kalpharmdan.com)
- Extensor tendon compartments of the wrist are anatomical tunnels on the back of the wrist that contain tendons of muscles that extend (as opposed to flex) the wrist and the digits (fingers and thumb). (wikipedia.org)
- As the tendons travel over the posterior (back) aspect of the wrist they are enclosed within synovial tendon sheaths. (wikipedia.org)
- In layman's terms, as I'm not a doctor, nor do I play one on television, the carpal tunnel is a tiny tube in your wrist bridging the gap between your arm and hand that operates like a subway tunnel enabling a major nerve known as the median as well as tendons to move through this tunnel. (brighthub.com)
- The carpal subway station protects that nerve and the tendons from the bones and ligaments that surround it in that tightly constructed wrist of yours. (brighthub.com)
- Do you notice the pattern of the tendons in the wrist? (technovelgy.com)
- Sensitive actuators touch the tendons in your right wrist. (technovelgy.com)
- Straighten arm and bend wrist so fingers are pointed up and perpendicular to your forearm. (greatist.com)
- Straighten arm and bend wrist down so palm is facing your body and fingers are pointed toward the floor, perpendicular to your forearm. (greatist.com)
- Start with wrist in a neutral position, palm facing away from you, and fingers curled into a fist. (greatist.com)
- Open your fist into a flat palm, with thumb glued against pointer finger, so wrist is parallel to the floor. (greatist.com)
- Bend wrist back toward you so the backs of your hand and fingers are facing your face. (greatist.com)
- Start with hand in "stop" position, wrist neutral, and fingers straight. (greatist.com)
- While training at University of Washington Harborview Medical Center, he received advanced training in hand and upper extremity trauma care, lower extremity limb salvage, complex microvascular reconstruction, peripheral nerve surgery, wrist arthroscopy, and joint replacement and reconstruction for thumb and finger arthritis. (lifebridgehealth.org)
- You may feel shooting pain from your fingers and thumb that radiates up through your wrist. (healthline.com)
- Tendonitis of the wrist is due to inflammation of the tendons. (healthline.com)
- The bone is replaced with a piece of tendon from the wrist or a prosthesis made out of silicone to maintain stability and mobility in the thumbs basal joint. (lu.se)
- In OA of the fingers or the wrist, the surgeon will often choose to remove one or more bones in the affected joint (common for wrist OA) or perform joint fusion surgery (common for finger OA). (lu.se)
- Carpal tunnel syndrome is the compression of the median nerve at the wrist, which may result in numbness, tingling, weakness, or muscle atrophy in the hand and fingers. (cdc.gov)
Nerves6
- Overview of Hand Disorders Hand and finger disorders include ganglia, deformities, disorders related to nerves or blood vessels, osteoarthritis, trigger finger, Kienböck disease, and infections. (msdmanuals.com)
- Numbness and tingling may be present in the finger if the digital nerves are bruised or torn. (emedicinehealth.com)
- Even if a bite does not break the skin, it may cause crushing and tearing injury to underlying bone, muscles, tendons, ligaments, and nerves. (aaos.org)
- The area should be watched carefully for signs of damaged nerves or tendons. (aaos.org)
- If it does not, or if there are signs of infection or damage to nerves and tendons, medical help should be sought. (aaos.org)
- If the tendons or nerves have been injured, a specialist may be consulted for additional treatment. (aaos.org)
Ligaments3
- Most often the collateral ligaments of the PIP joint of the finger are involved. (emedicinehealth.com)
- According to Dr. Brigit Barre, a sports certified doctor of physical therapy at Langford Sports & PT in Albuquerque, New Mexico, it is harder for aging athletes to get and stay in shape because our metabolism slows, our muscle size and strength decrease, and our muscles, tendons, and ligaments become less flexible. (climbing.com)
- A "jammed" finger is a sprain of the joint-supporting ligaments without an associated fracture (broken bone) and does not have to be "pulled out" forcefully on the field. (healthychildren.org)
Develop in the tendon sheath2
- Furthermore, small fibrinoid rice bodies can develop in the tendon sheath. (medscape.com)
- A bacterial infection can develop in the tendon sheath that surrounds the tendons in the palm and inside of the fingers. (msdmanuals.com)
Forearm6
- S56.103 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of unspecified injury of flexor muscle, fascia and tendon of right middle finger at forearm level. (icdlist.com)
- The appropriate 7th character is to be added to each code from block Injury of muscle, fascia and tendon at forearm level (S56). (icdlist.com)
- The median nerve links the muscles of your forearm to the palm and the other tendons that pass through the tunnel to your digits. (brighthub.com)
- Carpal tunnel syndrome happens when your median nerve, which runs along the underside of your forearm and up your hand through a tunnel of nine tendons called the carpal tunnel, gets squeezed or compressed. (greatist.com)
- The flexor tendon system of the hand consists of the flexor muscles of the forearm, their tendinous extensions, and the specialized digital flexor sheaths. (medscape.com)
- The FDS muscle forms 4 distinct bundles in the middle aspect of the forearm, each of which, in turn, forms 4 distinct tendons in the distal forearm. (medscape.com)
Sheaths4
- These sheaths reduce the friction to the extensor tendons as they traverse the compartments that are formed by the attachments of the extensor retinaculum to the distal (far end) of the radius and ulna. (wikipedia.org)
- Flexor Tendon Sheaths of. (msdmanuals.com)
- Decreased passive and active motion of the fingers is caused by impairment of the free-gliding movement of the flexor tendons through the sheaths as the thickened synovium proliferates. (medscape.com)
- Proliferative synovitis in flexor tendon sheaths can cause compression of the median nerve and can produce the symptoms of carpal tunnel syndrome. (medscape.com)
Rupture7
- Hypertrophic synovial tissue begins to invade and weaken the tendon, eventually leading to rupture. (medscape.com)
- Tendon rupture may also be a result of attrition of the tendon from bony spicules and osteophytes. (medscape.com)
- Extensor tendon repair surgeries are usually safe however as with any surgery there are potential risks including infection, adhesion formation, tendon rupture, repair break, loss of flexion, and a weakened grip. (orthopedicsurgeryandsportsmed.com)
- Dissection of the nodule in the tendon is rarely indicated and may actually cause tendon weakening or rupture. (medscape.com)
- As dorsal tenosynovitis becomes more apparent, the likelihood of tendon rupture increases. (medscape.com)
- After a tenosynovectomy, tendon rupture rarely occurs and complications are infrequent, yet postoperative adhesions may occur. (medscape.com)
- Tendons can also adhere to each other and may rupture. (medscape.com)
Carpal1
- Experts aren't totally sure what causes carpal tunnel, but one of the leading hypotheses is that it's a type of anatomic compression and/or inflammation around the tendons. (greatist.com)
Sheath that surrounds1
- Trigger finger - an irritation of the sheath that surrounds the flexor tendons. (medlineplus.gov)
Muscles and tendons1
- In severe cases, ultrasound or MRI may be performed to identify the extent of damage and to get a detailed view of all the bones, muscles, and tendons around the injury. (orthopedicsurgeryandsportsmed.com)
Distal3
- TF results from thickening of the flexor tendon within the distal aspect of the palm. (medscape.com)
- Performing the reinforcement of the tendon at the base of the distal phalanxand the suture in the palm of the hand completely eliminates the complications caused by the tendon suture in zone II. (bvsalud.org)
- Each tendon arising from the FDP muscle flexes the proximal interphalangeal (PIP) joint and the distal interphalangeal (DIP) joint. (medscape.com)
Stiffness1
- The doctor may also recommend doing some gentle exercises to stretch the finger, which may help reduce stiffness and improve mobility. (medicalnewstoday.com)
Thumb8
- [ 1 ] TF most commonly affects the ring finger and the thumb (trigger thumb) but can also occur in the other fingers. (medscape.com)
- The open technique is absolutely essential for the thumb or little finger or in the presence of PIP contractures. (medscape.com)
- 1. "I tried to butter some bread with a blunt butter knife, but I somehow stabbed the webbing between my thumb and finger. (buzzfeed.com)
- These signals are then correlated to specific hand gestures, such as touching a finger and thumb together, or gripping an object tighter than normal. (technovelgy.com)
- Curl fingers into fist, with thumb on the outside. (greatist.com)
- It houses the median nerve and flexor tendons, which help you bend your fingers and thumb. (healthline.com)
- Symptoms in your fingers and thumb may come and go at first. (healthline.com)
- The hands have four movable fingers and a stationary thumb. (lu.se)
Ligament2
- More severe or unstable finger collateral ligament sprains or those associated with fractures may require surgery to stabilize the injury. (emedicinehealth.com)
- In more severe cases, a person may dislocate or fracture a finger bone or damage a tendon or ligament. (medicalnewstoday.com)
Sprain6
- RICE (rest, ice, compression, and elevation) may be a useful home remedy for a finger sprain. (emedicinehealth.com)
- What Is a Finger Sprain? (emedicinehealth.com)
- What Are Signs and Symptoms of a Finger Sprain? (emedicinehealth.com)
- How Do Medical Professionals Diagnose and Assess a Finger Sprain? (emedicinehealth.com)
- Medical professionals make a diagnosis of a finger sprain by getting the patient's history to understand how the injury occurred and performing a physical examination. (emedicinehealth.com)
- What Are Treatment Options for a Finger Sprain? (emedicinehealth.com)
Bone3
- Extensor tendons are located just under the skin, directly on the bone, on the back of the hand and fingers. (orthopedicsurgeryandsportsmed.com)
- Tendons firmly attach each end of a muscle to a bone. (msdmanuals.com)
- A trained healthcare professional will reset the bone and immobilize the finger to allow it to heal properly, which reduces the risk of further complications. (medicalnewstoday.com)
Achilles1
- These growths most often affect the Achilles tendons and tendons in the hands and fingers. (news-medical.net)
Nerve9
- Repair of nerve and tendon, right ring finger and exploration of digital laceration. (mtsamples.com)
- Laceration to right ring finger with partial laceration to the ulnar slip of the FDS which is the flexor digitorum superficialis and 25% laceration to the flexor digitorum profundus of the right ring finger and laceration 100% of the ulnar digital nerve to the right ring finger. (mtsamples.com)
- Volar laceration to right ring finger with possible digital nerve injury with possible flexor tendon injury. (mtsamples.com)
- 1. Repair of nerve and tendon, right ring finger. (mtsamples.com)
- If the nerve becomes compressed or swollen within the tunnel, it can cause pain, tingling, and numbness in the hand and fingers. (medicalnewstoday.com)
- The physician will wash the wound area thoroughly and check for signs of nerve or tendon damage. (aaos.org)
- Motor branches from the C8 and T1 distribution of the ulnar nerve provide innervation for the ring and small finger muscle bellies. (medscape.com)
- The anterior interosseous branch of the median nerve (C8 and T1) innervates the index and middle finger muscle bellies. (medscape.com)
- The single muscle belly gives rise to 1 tendon, and it is innervated by the anterior interosseous branch of the median nerve (C8 and T1). (medscape.com)
Proximal4
- Palmar surface revealed approximally 0.5 cm laceration at the base of the right ring finger at the base of proximal phalanx, which was approximated with nylon suture. (mtsamples.com)
- During trigger finger release, the proximal edge of the A1 pulley is identified, and a scalpel blade is used to divide the entire A1 pulley in the midline under vision. (medscape.com)
- The tendon suture is made in the palm proximal to the A1 pulley outside the tendon sheath in the area where the muscular belly of thelumbricalis is located on the tendon of the deep flexor. (bvsalud.org)
- The Bethlem myopathy is an autosomal dominant or recessive disorder characterized by proximal and axial progressive muscle weakness, with flexion finger contractures (TAGLIAVINI et al. (bvsalud.org)
Symptoms6
- The most common symptoms of extensor tendon injury are pain and swelling at the tip of the finger. (orthopedicsurgeryandsportsmed.com)
- Symptoms of infection of the tendon sheath include swelling and pain of the finger and tenderness over the tendon sheath. (msdmanuals.com)
- While as bad as all of those, perhaps the worst of psoriatic arthritis symptoms is when sufferers have their finger or toenails separate from the nail bed. (canadapharmacy.com)
- Symptoms of trigger finger may be worse when a person wakes up or after other long periods of inactivity. (medicalnewstoday.com)
- Symptoms typically show up only on the side of the ring finger closest to the middle finger, but symptoms can also affect other fingers. (healthline.com)
- Symptoms are more likely to affect the pinkie, ring finger, and inside of the hand. (healthline.com)
Deformity2
- Boutonniere deformity: Characterized by a bent-down (flexed) position of the middle joint of the finger caused by a cut or tear to the extensor tendon at the middle joint. (orthopedicsurgeryandsportsmed.com)
- There may be finger deformity. (emedicinehealth.com)
Laceration3
- This is a 13-year-old male who had sustained a laceration from glass and had described numbness and tingling in his right ring finger. (mtsamples.com)
- We explored the flexor tendon and found that there was a partial laceration of the ulnar slip of the FDS and a 25% laceration in a transverse fashion to the FDP. (mtsamples.com)
- These images are a random sampling from a Bing search on the term "Flexor Tendon Laceration. (fpnotebook.com)
Toes1
- and abnormal hardening (sclerosis) of tissues in the fingers and toes. (medlineplus.gov)
Injury10
- An extensor tendon injury is damage to the tissues on the back of the hand and fingers. (lahey.org)
- Extensor tendon injury is a partial or complete damage to the tendon. (orthopedicsurgeryandsportsmed.com)
- However, specific treatment for an extensor tendon injury varies according to the level of its severity. (orthopedicsurgeryandsportsmed.com)
- A tendon sheath abscess is caused by an injury that penetrates one of the creases on the palm side of a finger. (msdmanuals.com)
- Finger sprains are injury from trauma , usually because of a direct blow to the finger, which is forced into a forced side-to-side movement. (emedicinehealth.com)
- The mechanism of injury is often a jammed finger. (emedicinehealth.com)
- With any injury, it is important to assess the blood supply and sensation to the finger. (emedicinehealth.com)
- As such, concerns have been raised about risks for cumulative trauma injury, and reduced productivity, due to repetitive finger motion with the SAT. Purpose: This study developed a method to predict cumulative finger flexor tendon travel associated with the SAT nail gun from finger joint kinematics measured in the trigger actuation and productivity standards for wood frame construction tasks. (cdc.gov)
- There is no injury to the tendon sheath, or the need for intersection of the tendons. (bvsalud.org)
- Injury to the flexor tendon system can lead to significant morbidity for patients. (medscape.com)
Connective2
- Tendons and Bursae Tendons are tough bands of connective tissue made up mostly of a rigid protein called collagen. (msdmanuals.com)
- The type VI collagen is an extracellular protein forming a distinct myofibrillar network of most interstitial connective tissues, existing in the cellular matrices of muscle, skin, tendon, cartilage, intervertebral discs, blood vessels and eyes. (bvsalud.org)
Mallet1
- Mallet finger: Characterized by the drooping of the end-joint of a finger due to a cut or a tear of the extensor tendon at the last joint. (orthopedicsurgeryandsportsmed.com)
Contractures1
- Many characteristics are common just like muscle disability and fatigue, contractures often in fingers, elbows, and ankles. (bvsalud.org)
Ulnar3
- The tendon of 6th compartment (extensor carpi ulnaris) can suffer recurrent dislocation due to a tear of the ulnar side of the compartment. (wikipedia.org)
- Ulnar drift of the fingers in rheumatoid disease. (medscape.com)
- The ulnar bundle forms interdigitating slips that are covered by a single paratenon, ultimately forming the individual profundus tendons of the middle, ring, and small fingers. (medscape.com)
Tenosynovitis1
- Trigger finger is the common name for a condition that doctors call stenosing tenosynovitis. (medicalnewstoday.com)
Exercises2
- Exercises will also be given to help with finger strength and motion. (lahey.org)
- Vertical and horizontal tendon gliding exercises really do seem to help people," says Badia. (greatist.com)
Occur2
- It can occur when the tendon sheath in the base of the finger becomes inflamed, causing the finger to lock or catch when a person tries to move it. (medicalnewstoday.com)
- Most bites occur on the fingers of the dominant hand, but animal bites can also occur about the head and neck area. (aaos.org)
Fracture1
- People who suspect a fracture or dislocation should avoid moving the finger and seek prompt medical attention. (medicalnewstoday.com)
Pulley2
- Attention during our repair at the flexor tendon, the A1 pulley was incised for better visualization as well as better tendon excursion after repair. (mtsamples.com)
- Specifically, the affected tendon is caught at the edge of the first anular (A1) pulley. (medscape.com)
Diagnosis3
- Doctors base the diagnosis of infection of the tendon sheath on an examination. (msdmanuals.com)
- A painless necrotic lesion on of rickettsioses: current approaches to the developed on a finger of a 31-year- diagnosis of old and new rickettsial dis- the left fourth finger measured 3 cm2 old, healthy, female Belgian woman. (cdc.gov)
- Spotless rickettsio- diagnosis was supported by serocon- ing tendon had been destroyed. (cdc.gov)
Swelling3
- This swelling may even be the first sign of RA and may involve any combination of extensor tendons. (medscape.com)
- If there is very little or no swelling, minimal point tenderness, and normal appearance and the finger has a full range of motion, parents may "buddy-tape" the finger until it no longer hurts (1 to 2 weeks). (healthychildren.org)
- Keeping the finger elevated above the level of the heart can help reduce swelling. (medicalnewstoday.com)
Surgery4
- Some people may need surgery to repair the tendon. (lahey.org)
- Extensor tendon repair surgery may be performed under local, regional or general anesthesia. (orthopedicsurgeryandsportsmed.com)
- If other treatments are unsuccessful, a person may require surgery to release the tendon sheath. (medicalnewstoday.com)
- The tendons to the middle and ring fingers lie superficial to the tendons of the index and little fingers, a relationship that aids in their identification during surgery. (medscape.com)
Graft3
- One of them is reconstruction of the flexor apparatus by primary transplantation of an autologous tendon graft. (bvsalud.org)
- Most commonly, the tendon graft is taken from the palmaris longusfrom the same hand. (bvsalud.org)
- The tendon graft can subsitute the entire area of zones I and II. (bvsalud.org)
Infection1
- Infection and pus form around the tendon and rapidly destroy tissue. (msdmanuals.com)
Compression1
- Most finger sprains are relatively minor and heal on their own with symptomatic care, including RICE (rest, ice, compression, and elevation) buddy taping, splinting, and time. (emedicinehealth.com)
Intrinsic2
- Tubiana R, Malek R. Paralysis of the intrinsic muscles of the fingers. (medscape.com)
- Treatment by crossed intrinsic tendon transfer. (medscape.com)
Radial3
- Tendon transfers for radial palsy. (wheelessonline.com)
- The radial neurovascular bundle on the right ring finger was found to be completely intact. (mtsamples.com)
- At the musculotendinous junction, the radial bundle forms the profundus tendon of the index finger. (medscape.com)