Abstract

An 18-year-old female presented with persistent pain in the medial aspect of her knee joint for three months, significantly affecting her mobility. Radiological examination revealed a cystic lesion in the medial condyle of the distal femur. A subsequent MRI of the knee confirmed the diagnosis of osteoclastoma, a rare, benign but locally aggressive bone tumor. The patient underwent a meticulously planned surgical procedure involving intralesional curettage to remove the tumor. The resulting defect in the bone was reconstructed using an autologous iliac crest bone graft. To ensure structural stability and prevent fractures, prophylactic fixation was performed with a locking compression plate. Histopathological analysis of the tumor contents reaffirmed the diagnosis of osteoclastoma. Postoperatively, the patient was enrolled in a structured physiotherapy program to restore knee function. At the one-year follow-up, radiological assessment demonstrated successful incorporation of the bone graft into the femur, with no signs of local recurrence of the tumor. Clinically, the patient reported complete resolution of pain and exhibited a full range of motion in the affected knee, indicating a successful outcome. This case highlights the importance of early diagnosis and comprehensive management of osteoclastoma, particularly in weight-bearing bones, to preserve joint functionality and prevent complications. The integration of surgical intervention, bone grafting, and physiotherapy contributed to the favourable prognosis and complete recovery of the patient.