swan-neck deformity


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swan-·neck de·for·mi·ty

hyperextension of the proximal interphalangeal joint with flexion of the distal interphalangeal joint of the finger.

swan-neck de·for·mi·ty

(swahn'nek dĕ-fōr'mi-tē)
Deformity of a finger involving hyperextension of the proximal interphalangeal joint (PIP) and flexion of the distal interphalangeal joint (DIP).

swan-neck deformity

A finger deformity marked by flexion of the distal interphalangeal joints and hyperextension of the proximal interphalangeal joints, often seen in rheumatoid arthritis.
See also: deformity