wkes.eu The extensor carpi ulnaris (ECU) muscle plays a key role not only in the active movements of wrist extension and ulnar deviation but also in providing stability to the ulnar side of the wrist.

Wrist lesions are considered relatively rare in tennis. Ulnar pain in this context is caused by injuries of extensor carpi ulnaris (ECU), triangular fibrocartilage, triquetrum-lunate ligament or bone ...