Radioulnar Synostosis Following an Isolated Fracture of the Ulnar Shaft: A Case ReportPOSMAN, CLIFFORD, L.; LITTLE, RONALD, E.Clinical Orthopaedics and Related Research: December 1986 - Volume 213 - Issue - p 207–210 SECTION II: GENERAL ORTHOPAEDICS: PDF Only Free Abstract Author InformationAuthors In the case of a 19-year-old man, overuse of his nondominant forearm resulted in a radioulnar synostosis. Despite the persistence of the synostosis, the patient adapted to loss of forearm rotation. No further treatment was necessary. Isolated fractures of the ulnar shaft are slow in healing. Several authors observed that early function may be beneficial. However, excessive activity causing motion at the fracture site may cause subperiosteal hemorrhage and soft tissue trauma and may stimulate exuberant callus formation. Fractures of the ulnar shaft, even undisplaced, need to be immobilized to prevent overuse. From the Department of Orthopaedic Surgery, Wayne State University School of Medicine, Detroit, Michigan. © Lippincott-Raven Publishers.