Extensor Carpi Ulnaris Tendinopathy Following Conservative Treatment of a Distal Ulnar Metaphyseal Fracture: A Case Report

Distal ulnar metaphyseal fractures are often treated conservatively with good clinical outcomes. Extensor carpi ulnaris (ECU) tendinopathy after conservative treatment for distal ulnar metaphyseal fractures has not been reported. We present a case of a 20-year-old university baseball player who developed ECU tendinopathy after conservative treatment for a distal ulnar metaphyseal fracture. A slight step-off at the fracture site and repeated movements as a catcher were considered to have caused the ECU tendinopathy. Clinicians should be aware of ECU tendinopathy after distal ulnar metaphyseal fractures with repeated ECU loading in sports or occupations.