title: Influence of ulnar translation of the radial shaft in distal radius fracture on distal radioulnar joint instability.
abstract: It has been reported that the distal interosseous membrane (DIOM) of the forearm constrains the dorsal dislocation of the distal radius. A residual ulnar translation deformity of the radial shaft in distal radius fractures has the potential to cause distal radioulnar joint (DRUJ) instability when triangular fibrocartilage complex (TFCC) injury is also present, because it may result in detensioning of the DIOM. Correction of ulnar translation of the radial shaft is critical because it restores DIOM tension, which then firmly holds the ulnar head in the concavity of the sigmoid notch.
authors.affiliation: Osaka Yukioka College of Health Science, Yukioka Hospital Hand Center, Osaka, Japan.
authors.forename: Hisao
authors.initials: H
authors.lastname: Moritomo
authors.affiliation: Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Omori
keywords: distal oblique bundle; distal radioulnar joint instability; distal radius fracture; interosseous membrane; translation