Isolated avulsion fracture of the lesser tuberosity of the humerus

Isolated lesser tuberosity fracture avulsion without an associated posterior shoulder dislocation or in the context of a three- or four-part proximal humerus fracture are extremely rare, with an estimated incidence rate of only 0.46 persons per 100,000. Diagnosis remains challenging, often leading to delayed treatment. In contrast with fractures of the greater tuberosity, there are no displacement guidelines to assist the surgeon in treatment decision-making for lesser tuberosity fractures. The aim of this study was to highlight diagnostic features as well as surgical treatment. We present a case of a 54-year-old male with an isolated lesser tuberosity fracture avulsion. We performed open reduction and osteosynthesis of the lesser tuberosity fragment with suture anchors and transosseous sutures. At 11-month follow-up the patient was able to normally perform his daily living and professional activities, had full, painless range of motion of the affected shoulder and regained almost full strength.