Ilizarov technique for treatment of a giant aneurysmal bone cyst at the distal femur: A case report.

Background: Aneurysmal bone cyst (ABC) is a benign cystic of unknown etiology, characterized by multiple chambers and a high recurrence rate. Current treatment options include vascular embolization, surgical excision, curettage with cavity filling, sclerosing agent injection into the cavity, radiotherapy, and systemic drug therapy. Among these, surgical excision and curettage are the preferred treatment modalities. However, when the cyst reaches a large size, extensive removal of diseased tissue during surgery can hinder bone healing. In our department, we treated a case of a large ABC at the distal end of the femur in a child using the Ilizarov technique. The tumor was completely excised, and reconstruction was achieved through autologous femoral bone transfer. The follow-up at two years post-surgery indicated good results without tumor recurrence, and the growth and development of the child were essentially unaffected.

Case summary: An 11-year-old boy was presented with an accidental fracture of his right leg. Despite having been examined at other hospitals, he had not received treatment. Given the potential for significant bone defects and the difficulty of the surgery, our doctors opted to use the Ilizarov technique to minimize harm to the patient. Upon admission, the patient underwent a needle biopsy and complete tumor resection-the Ilizarov technique assisted in the transport and reconstruction of the autologous femoral bone. Postoperatively, the patient exhibited regular follow-ups, during which bone transport was gradually performed, and the external fixation frame was removed on time. Follow-up X-rays of the right lower limb displayed no tumor recurrence, with a normal appearance. Bone formation at the cutting site was satisfactory, and the union of the bone ends indicated good healing. After two years of follow-up, the patient had essentially returned to normal.

Conclusion: We successfully applied the Ilizarov technique to treat ABC, reducing the financial burden of patients and the pain of multiple surgeries. In cases where significant bone defects occur, the Ilizarov technique has demonstrated satisfactory therapeutic outcomes.