Heterotopic Ossification of the Brachial Plexus After Reverse Total Shoulder Arthroplasty

Abstract

In the following report, we present the case of a patient who presented with a proximal humerus fracture dislocation and an associated brachial plexopathy. After undergoing a reverse total shoulder arthroplasty, the brachial plexopathy showed signs of improvement plateaued until the patient started having increased pain in the involved extremity and the brachial plexopathy began to worsen. At that time, it was discovered that the patient had heterotopic ossification (HO) encasing the brachial plexus and axillary artery. To our knowledge, this is the first reported case of HO involving the brachial plexus and axillary artery.