Fig. 3

Radiographs of a 5-year-old boy who presented with leg pain and loss of function. a A bone cyst is present in the proximal metaphysis of the femur without pathological fracture. b Flexible intramedullary nailing was used to fix and decompress the bone cyst. c The lesion shows signs of healing 6 months after surgery. d At 26 months the bone cyst is healed and the nail is removed. e The lesion is completely healed at 59-month follow-up