Location

Hand

Diagnosis

Rheumatoid arthritis

Discussion

Among the many osseous abnormalities that may be seen in rheumatoid arthritis, the swan neck deformity is the culmination of multiple abnormalities in the hand. Specifically, the deformity arises from hyperextension of the proximal interphalangeal joint, while the distal interphalangeal joint is flexed.

Reference

Welsh RP, Hastings DE: Swan neck deformity in rheumatoid arthritis of the hand. Hand. Hand 1977 Jun;9(2):109-16.

Heywood AW: The pathogenesis of the rheumatoid swan neck deformity. Hand 1979 Jun;11(2):176-83.

Figures

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Attachments:


handswanneck2.jpg (image/jpeg)


handswanneck.jpg (image/jpeg)