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DictionarySeedeformityEncyclopediaSeeswan-neckswan-neck deformity
swan-·neck de·for·mi·tyhyperextension 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 deformityA 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 |