Clinical Example: Rheumatoid arthritis with DRUJ and radiocarpal involvement

Rheumatoid arthritis has many forms of presentation. This patient has bilateral severe radiocarpal and distal radioulnar joint involvement, with relative sparing of the metacarpophalangeal and interphalangeal joints.

 
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Note the spontaneous radiolunate fusion.
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The radiolunate joint did not spontaneously fuse on this side, allowing a greater degree of ulnar translation of the carpus. Note the severe cystic carpal changes.
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