Fresh Osteochondral Allograft in a Complex Hoffa Fracture - Case Report.

Hoffa fracture (HF) typically involves the posterior femoral condyle in the sagittal plane, with an estimated incidence of 0.65% among femoral fractures. It usually occurs at the lateral femoral condyle in high-energy trauma with axial load force over the distal third of the femur and the knee positioned in more than 90° of flexion. The case reported involved a patient with a complex medial HF and associated knee dislocation after a high-energy trauma. At two years of follow-up radiologic analysis showed a complete bone healing and allograft integration. Transplantation of osteochondral allografts should be considered in cases of complex HF, and it aims at restoring the anatomy of the joint surface to prevent early post-traumatic osteoarthrosis in young patients.