Rupture of the Intra-Articular Portion of the Long Head of the Biceps associated with a Symptomatic os Acromiale

We report the case of a 45-year-old male who presented with a 5-year history of shoulder pain following an injury. Clinical and radiological investigations revealed a ruptured long head of the biceps and a meso-os acromiale. We performed an arthroscopic resection of the intra-articular stump of the long head of the biceps; followed by internal fixation of the mobile os acromiale using a tension band technique. Rupture of the long head of the biceps associated with a symptomatic os acromiale has not been previously described. This case reinforces the importance of routine shoulder arthroscopy in the treatment of symptomatic os acromiale