A case of a pathological fracture in the femoral neck due to chondroblastoma: 10-year follow-up without recurrence after curettage and bone grafting.

The standard treatment for chondroblastoma in the femoral head involves thorough curettage and bone grafting. However, postoperative local recurrence was observed, femoral head necrosis, and development of secondary osteoarthritis are considered. This case report describes a 19-year-old female who sustained a Garden IV pathological femoral neck fracture due to a large chondroblastoma in the femoral head and neck. The patient underwent closed reduction and internal fixation at initial surgery. After the patient was referred to our hospital, a second surgery was performed, which involved creating a window at the femoral head-neck junction via an anterior approach, performing curettage, and applying bone grafting, while leaving the fixation material in place. Ten years after surgery, the patient has shown favorable progress with no tumor recurrence or femoral head necrosis.