Abstract
INTRODUCTION: Aneurysmal bone cyst (ABC) is a benign, expansile hemorrhagic tumor usually presenting in the metaphyseal region of long bones. Diaphyseal ABCs are rare and prone to pathological fracture and increased morbidity. Treatment options are centered around the site and size of the lesion. CASE REPORT: We report a case of a large ABC in the tibia diaphysis in an 18 year female. The patient was treated with wide margin resection followed by an ipsilateral fibular bone graft of 5 cm, which was followed by good post-operative recovery without any recurrence. At 12-month follow-up, the patient had painless mobility with a full functional range of motion of the affected limb. CONCLUSION: An early rehabilitation and return to active life can be achieved in diaphyseal ABCs with careful planning and post-operative care.