Avulsion of the Common Extensor Tendon and Radial Collateral Ligament Tear

Abstract

The left lateral elbow inferior to the lateral epicondyle had moderate edema and mild ecchymosis. Resisted wrist extension was weak and painful. Large grip and stretching of the wrist extensors reproduced mild pain. The common extensor tendon (CET) and the lateral epicondyle were tender to palpation. Passive accessory motion was positive for hypermobility of the proximal radioulnar joint. Due to concern for an atraumatic CET tear, the physical therapist performed a same-day magnetic resonance imaging (MRI) examination on a 0.25 Tesla Esaote G-Scan Brio.