Isolated avulsion fracture of the subscapularis tendon with medial dislocation and tear of biceps tendon in a skeletally immature athlete: a case report

Isolated avulsion fracture of the subscapularis from the lesser tuberosity of the humerus is rare in the pediatric population and only a couple of cases have been described in the literature. In our case, a 13-year-old young man suffered an avulsion of the subscapularis tendon from the lesser tuberosity of the humerus, accompanied by medial dislocation of the biceps tendon with degeneration and tear. The diagnosis was delayed until he completed several weeks of physical therapy. Special tests performed earlier in the primary care clinic or emergency department could have prevented prolonged symptoms and allowed earlier surgical intervention.