Foreign body-induced metacarpophalangeal joint septic arthritis
Thorn injury to the dorsal radial aspect of 2nd metacarpophalangeal joint 15 days ago. Complaining of local swelling, pain, and loss of affected joint movements.
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There is a linear echogenic focus (2 mm) abutting the 2nd metacarpal head on the dorsal radial aspect - a foreign body (thorn).There is erosion of metacarpal head on dorsal radial aspect.
There is a metacarpo-phalangeal joint effusion with synovitis. There is no tenosynovitis / tendon tear.
Findings suggest foreign body (thorn) induced erosion of metacarpal head and metacarpo-phalangeal joint synovitis favouring septic arthritis. However, there is no surgical follow up available.