Radioulnar Synostosis

Excerpt

Radioulnar synostosis is an abnormal connection between the radius and ulna, which are connected by an interosseous membrane and work together to allow for pronation and supination. The synostosis may be congenital, iatrogenic, or posttraumatic and may be an osseous or fibrous fusion between the forearm bones. Disruption of the normal anatomy by a synostosis limits the range of motion and may cause significant functional deficits for affected patients, resulting in substantial morbidity.