Bilateral Congenital Radioulnar Synostosis in a 21-Month Old Male

Congenital radioulnar synostosis is a malformation that can limit the ability to perform daily activities. The condition involves the fusion of the proximal aspect of the ulna and radial head. The condition may result as a congenital defect or posttraumatic complication. Depending on the severity of the anomaly, treatment options include surgical intervention or conservative therapy. This case report discusses the initial presentation of congenital radioulnar synostosis in a 21-month old male. Imaging supports incomplete synostosis of the left forearm and the early stages in the right forearm.