Osteonecrosis has been described in multiple joints within the human musculoskeletal anatomy and is commonly found within the femoral head, femoral condyles, humeral head1,2, and some of the smaller bones of the foot and hand. Often, however, the etiology of osteonecrosis remains unknown. We are reporting what we believe to be a case of osteonecrosis of the glenoid secondary to disruption of its blood supply after placement of multiple suture anchors in its body and neck. Our search of the literature revealed only one previously reported case of osteonecrosis of the glenoid secondary to trauma3. That report describes a patient who fell from a bus onto her outstretched hand. The diagnosis of osteonecrosis was based only on a finding of subchondral lucency in the glenoid on plain radiographs; no biopsy was performed. Nonsteroidal antiinflammatory medications relieved the patient's symptoms, and she continued to be asymptomatic at the time of follow-up. The case that we are reporting raises concern that the vascular supply of the glenoid may have been injured through the implantation of surgical devices within or through the glenoid neck and body. The patient was informed that data concerning the case would be submitted for publication. Figs. 1-A and 1-B Anteroposterior (Fig. 1-A) and axillary (Fig. 1-B) plain radiographs show suture anchors and no substantial architectural abnormality. Athirty-one-year-old woman who had been followed in our clinic after sustaining a left proximal humeral fracture in April 2004 (the fracture healed uneventfully) presented in November 2004 with new pain in the right (contralateral) shoulder. She described increasingly severe pain that had begun with her dependence on the right upper extremity during the healing of the left extremity. The …