Lateral and medial epicondylitis (tennis elbow) are common pain complaints about the elbow in the adult. Disability from persistent pain and weakness at the elbow lead to surgical correction of the disorder. Complications of surgery arise from the improper diagnosis of the origin of the pain, failure to correct the pathology with the surgical procedure, and resultant profound forearm weakness or elbow instability. Rehabilitation during the postoperative period is critical for successful return to work or sports activity.