title: Pressure distribution in the humeroradial joint and force transmission to the capitellum during rotation of the forearm: effects of the Sauvé-Kapandji procedure and incision of the interosseous membrane.
abstract: A biomechanical study was undertaken, using four fresh cadaveric arms, to evaluate the changes in pressure distribution in the humeroradial joint (H-R joint) during rotation of the forearm before and after the Sauvé-Kapandji procedure (S-K procedure) and also after incision of the interosseous membrane (IOM) following the S-K procedure. The pressure distribution was measured with a pressure-sensitive conductive rubber sensor while the forearm was rotated. Force transmitted to the capitellum was calculated from the measured pressure. In the intact specimens, pressure was concentrated on the medial side of the capitellum in pronation and on the posterolateral side in supination. The pattern of change after the S-K procedure and that after incision of the IOM following the S-K procedure were almost the same as that in the intact forearm. Although the force transmitted to the capitellum increased after the S-K procedure, there were no significant differences between the forces before and after the S-K procedure. However, the force increased significantly after incision of the IOM following the S-K procedure when the forearm was supinated more than 35 degrees, and it was concentrated on the posterior side of the capitellum. The IOM seemed to have an important axial load-bearing function in the forearm position supinated more than 35 degrees. The S-K procedure in patients suffering from distal radioulnar joint disorders with IOM injury is likely to induce H-R joint osteoarthritis, so it should be avoided in these patients.
authors: Department of Orthopaedic Surgery, School of Medicine, Chiba University, Japan.
authors: S
authors: S
authors: Ofuchi
authors: K
authors: K
authors: Takahashi
authors: M
authors: M
authors: Yamagata
authors: T
authors: T
authors: Rokkaku
authors: H
authors: H
authors: Moriya
authors: T
authors: T
authors: Hara
mesh_terms: D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D002102:Cadaver; D004551:Elbow Joint / Q000502:physiology* / Q000601:surgery*; D005542:Forearm / Q000502:physiology*; D006801:Humans; D019637:Orthopedic Procedures; D011312:Pressure; D012399:Rotation