Osteosynthesis of an acromion fracture using a proximal clavicle plate: a case report

Displaced acromion fractures are commonly treated surgically; however, no implants have been specifically designed for this fracture type. Although various plates have been used, fixation failure and implant-related irritation remain concerns. We report a case of acromion fracture fixation using a proximal clavicle plate. A 77-year-old man presented with right shoulder pain after a fall. Computed tomography revealed an Ogawa type III acromion fracture extending to the spinoglenoid notch. Through a posterior approach along the scapular spine, the fracture was anatomically reduced and fixed with a proximal clavicle locking plate. Four screws, including two longer than 30 mm, were inserted medially to the fracture site, and six screws were inserted laterally. Neither fixation failure nor implant-related pain occurred, and complete bone union was achieved. Fixation with a proximal clavicle plate may represent a useful treatment option for acromion fractures, particularly in cases with highly variable acromial and scapular spine anatomy.