Surgery for radioulnar synostosis tends to be an osteotomy or a cutting of the bone and rotating the forearm to a more functional position, close to the clapping position ('neutral'). Usually positioned in slightly palm down position due to the importance of keyboarding and tabletop activities. I like this surgery as patients and families are happy with it. BUT, surgery is not always necessary because patients have a great ability to compensate. This video is a great demonstration of a patient with radioulnar synostosis who appears to be rotating the forearms but really is just rotating through the wrist joints.
Charles A. Goldfarb, MD
My Bio at Washington University
congenitalhand@wudosis.wustl.edu