Fracture–avulsion isolée du tubercule mineur de l’humérus: À propos d’un cas et revue de la littérature

Isolated avulsion fracture of lesser tuberosity of humeral head is not infrequent. Usually diagnosis is delay or unrecognized and symptomatology is poor. Analysis of X-ray is often difficult because the avulsed bony insertion overlay on humeral head. The mechanism of injury is an excessive contracture of subscapularis muscle during a forced external rotation. Long biceps's instability is the main associated injury. The treatement is a sling immobilization with internal rotation of humeral head for no displaced fracture. Surgical treatement must be recommended for other cases. Deltopectoral approach with screw and anchor fixation is classical but one case of arthroscopic treatement has been described. The best treatement of long biceps's associated instability is section.