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Swan neck deformity has many of possible causes arising from the DIP, PIP, or even the MCP joints. In all cases, there is a stretching of the volar plate at the PIP joint to allow hyperextension, plus some damage to the attachment of the extensor tendon to the base of the distal phalanx that produces a hyperflexed mallet finger.
Additionally, swan-neck deformity can be caused by weakening or tearing of the ligament and tendon on the middle joint of a finger. [10] Other causes of swan-neck deformity include untreated mallet finger, muscle spasticity, physical hand trauma, and many others.
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]
A diagram showing how rheumatoid arthritis affects a joint Hand deformity, sometimes called a swan deformity, in an elderly person with rheumatoid arthritis. Arthritis of joints involves inflammation of the synovial membrane. Joints become swollen, tender and warm, and stiffness limits their movement.
738 Other acquired deformity. 738.0 Acquired deformity of nose; 738.1 Other acquired deformity of head; 738.2 Acquired deformity of neck; 738.3 Acquired deformity of chest and rib; 738.4 Acquired spondylolisthesis; 738.5 Other acquired deformity of back or spine; 738.6 Acquired deformity of pelvis; 738.7 Cauliflower ear; 738.8 Acquired ...
[4] [16] As a result of frequent tissue injury, there can be an early onset of advanced osteoarthritis, [47] chronic degenerative joint disease, [47] swan-neck deformity of the fingers, [48] and Boutonniere deformity of the fingers. Tendon and ligament laxity offer minuscule protection from tearing in muscles and tendons, but these problems ...
Image credits: viralsumo1 #6. 1. Gentle Admittedly men are quite strong and can sometimes come off as a bull in a China shop. When a man is considerate and gentle, it genuinely makes my heart melt.
Swan neck deformity; Swiss cheese appearance (cardiac) T. Talar beak; Target calcification; Target sign (Gastrointestinal system) Target sign (Ultrasound)