The bones are diffusely osteopenic. Findings typical of osteoarthritis include distal greater than proximal joint space narrowing, osteophytosis, and sclerosis, with typical degenerative findings at the thumb carpal-metacarpal joint also appreciated. A small subchondral cyst is present at the distal head of the middle finger proximal phalanx.
Additionally, central erosions are present at the DIPâ€™s of the ring and index fingers, as well as the PIPâ€™s of the small and middle fingers (with subluxations present at the small finger PIP as well as the thumb and index finger MCPâ€™s). The characteristic â€śgull-wingâ€ť appearance is best appreciated at the ring finger DIP.
Original Source: Joel McFarland Submitted by: Joel McFarland - Affiliation: National Naval Medical Center Bethesda
Approved By: Albert V Porambo - Affiliation: Civilian Medical Center
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