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Sigmoid Osteotomy

Sigmoid notch osteoplasty for chronic volar instability of the distal radioulnar joint: a case report

Wallwork NA, Bain GI.

Modbury Public Hospital, Royal Adelaide Hospital, and University of Adelaide, Adelaide, South Australia, Australia.

Chronic recurrent volar dislocation of the distal radioulnar joint is a rare condition for which many operative procedures have been described. We describe a case of painful dislocation on supination. Investigation of the distal radioulnar joint revealed the absence of degenerative arthritis and a flat sigmoid notch that permitted dislocation. The case was successfully treated by osteoplasty of the volar lip of the sigmoid notch to create a buttress that prevented volar dislocation.

J Hand Surg [Am] 2001 May;26(3):454-459