A Case Report of Aneurysmal Bone Cyst with Pathologic Fracture of Proximal Femur Managed with EnblocExcision and Autologous Non-vascularized Fibular Graft

INTRODUCTION: Aneurysmal bone cyst (ABC) is typically a benign, expansile, and cystic lesion of the bone that can be locally aggressive characterized by vascular gaps separated by fibrous septae. Treatment modalities available are sclerosing agents, arterial embolization, surgical excision, curettage with or without bone grafting, and adjuvant radiotherapy. CASE REPORT: We report a rare case of ABC with pathologic fracture in the proximal femur in a 15-year-old female patient, treated with en blocexcision, bone grafting with non-vascularized fibular strut graft and stabilized with a 95°dynamiccondylar screw plate system. Follow-up at 24 months showed incorporation of the fibular graft and full union. CONCLUSION: Structural support and autologous bone grafting in giant ABC in young individuals would yield adequate results.