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2. Metacarpophalangeal joint - Wikipedia

   en.wikipedia.org/wiki/Metacarpophalangeal_joint

   The metacarpophalangeal joints (MCP) are situated between the metacarpal bones and the proximal phalanges of the fingers. [1] These joints are of the condyloid kind, formed by the reception of the rounded heads of the metacarpal bones into shallow cavities on the proximal ends of the proximal phalanges . [ 1 ]

3. Ulnar collateral ligament injury of the thumb - Wikipedia

   en.wikipedia.org/wiki/Ulnar_collateral_ligament...

   Gamekeeper's thumb and skier's thumb are two similar conditions, both of which involve insufficiency of the ulnar collateral ligament (UCL) of the thumb. The chief difference between these two conditions is that skier's thumb is generally considered to be an acute condition acquired after a fall or similar abduction injury to the metacarpophalangeal (MCP) joint of the thumb, whereas gamekeeper ...

4. Ulnar claw - Wikipedia

   en.wikipedia.org/wiki/Ulnar_claw

   A hand imitating an ulnar claw. The metacarpophalangeal joints of the 4th and 5th fingers are extended and the Interphalangeal joints of the same fingers are flexed.. An ulnar claw, also known as claw hand or ‘Spinster’s Claw’, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals.

5. Collateral ligaments of metacarpophalangeal joints - Wikipedia

   en.wikipedia.org/wiki/Collateral_ligaments_of...

   In human anatomy, the radial (RCL) and ulnar (UCL) collateral ligaments of the metacarpophalangeal joints (MCP) of the hand are the primary stabilisers of the MCP joints. [1] A collateral ligament flanks each MCP joint - one on either side. Each attaches proximally at the head of the metacarpal bone, and distally at the base of the phalynx.

6. Jaccoud arthropathy - Wikipedia

   en.wikipedia.org/wiki/Jaccoud_arthropathy

   Jaccoud arthropathy (JA), is a chronic non-erosive reversible joint disorder that may occur after repeated bouts of arthritis. [1] [2] It is caused by inflammation of the joint capsule and subsequent fibrotic retraction, causing ulnar deviation of the fingers, through metacarpophalangeal joint (MCP) subluxation, [1] [3] primarily of the ring and little-finger. [3]

7. Congenital clasped thumb - Wikipedia

   en.wikipedia.org/wiki/Congenital_clasped_thumb

   Congenital clasped thumb describes an anomaly which is characterized by a fixed thumb into the palm at the metacarpophalangeal joint in one or both hands. [5] The incidence and genetic background are unknown. A study of Weckesser et al. showed that boys are twice as often affected with congenital clasped thumb compared to girls.

8. Ulnar deviation - Wikipedia

   en.wikipedia.org/wiki/Ulnar_deviation

   Consideration should also be given to pigmented villonodular synovitis, in the setting of ulnar deviation and metacarpophalangeal synovitis. [citation needed] Ulnar deviation is also a physiological movement of the wrist, where the hand including the fingers move towards the ulna. Ulnar deviation is a disorder in which flexion by ulnar nerve ...

9. Dupuytren's contracture - Wikipedia

   en.wikipedia.org/wiki/Dupuytren's_contracture

   The treatment with collagenase is different for the MCP joint and the PIP joint. In a MCP joint contracture the needle must be placed at the point of maximum bowstringing of the palpable cord. [59] The needle is placed vertically on the bowstring. The collagenase is distributed across three injection points. [59] For the PIP joint the needle ...