Team Approach: Reverse Shoulder Arthroplasty in the Setting of a 4-Part Proximal Humerus Fracture with Vascular...

Proximal humerus fractures (PHFs) are increasingly prevalent, particularly in the geriatric population, where they represent a significant burden both individually and societally. Vascular injury, though rare, can have profound implications for management and outcomes. The presence of these concomitant injuries has been shown to be associated with an increased length of hospital stay, total cost, and patient mortality underscoring the critical need for accurate identification of both osseous and vascular injuries to provide appropriate, comprehensive care. Despite extensive research, controversy remains regarding the optimal management of these injuries. Nonoperative management is suitable for fractures meeting specific criteria, while operative options vary based on fracture characteristics, patient factors, and surgeon expertise. The rise in reverse total shoulder arthroplasty (RSA) as a treatment of complex fracture patterns reflects evolving trends in clinical practice.

This report presents the case of a 76-year-old woman with a complex, 4-part PHF dislocation sustained secondary to a ground-level fall. On examination, she exhibited diminished radial nerve sensation with wrist extension weakness but was otherwise neurovascularly intact. Cross sectional imaging demonstrated significant medialization of an anterior fracture dislocation of the proximal humerus. Computed tomography angiography of the left upper extremity showed a markedly tortuous axillary artery with possible intimal injury, prompting a multidisciplinary approach.

A shared decision-making model led to combination surgical case with vascular and orthopaedic surgery for subclavian artery exposure followed by RSA. Postoperatively, the patient recovered without complication, demonstrating the importance of an individualized, multidisciplinary strategy for managing complex PHF with associated vascular insult.

This case highlights the critical role of recognition of potential neurovascular injuries due to traumatic events and coordinated management of osseous and vascular injuries in complex PHF. We also describe a combined surgical approach and interdisciplinary coordination for PHF dislocations with concern for vascular compromise. Glenohumeral fracture dislocations are high-risk injuries where RSA offers predictable outcomes for complex fracture patterns but demands careful consideration in the setting of possible vascular trauma.