Eight-year results of two fresh-frozen osteochondral allografts for reverse Hill-Sachs lesion in irreducible posterior shoulder dislocation

Intermediate-sized reverse Hill–Sachs lesions (RHSL) occurring in irreducible posterior shoulder dislocations are challenging to manage. Indeed, there is no consensus regarding treatment due to the variety of surgical strategies and the lack of long-term follow-up data. Anatomical reconstruction techniques using allografts may represent a suitable compromise, allowing preservation of bone stock while facilitating recovery of rotational range of motion. We report the 8-year follow-up of two cases of irreducible posterior dislocation treated with fresh-frozen osteochondral allografts. Graft incorporation, potential mechanical complications, and the development of osteoarthritis were assessed using radiography and computed tomography. The survival of these allografts in RHSL remains poorly defined due to the limited long-term data available in the literature.