Symptoms are usually pain in the inside corner of the joint.
Often OCD cannot be detected with plain x-rays, and an MRI is necessary for diagnosis. The exact cause of OCD is not known, although a history of trauma is common. Occasionally in very young patients, the OCD will heal with immobilization and rest. Most often the OCD will require surgical treatment. Initial treatment involves arthroscopy to remove severely damaged fragments or drilling through the area with no blood supply into adjacent healthy bone.