All patients were operated using the Watson–Jones approach. Under general anesthesia on a regular operating table employing an image intensifier fluoroscopy. We first exposed the anterior part of the proximal femur. In cases with fracture, we initially reduced the fracture and created an oval-shaped cortical window over the cyst. Subsequently, curettage and high-speed burring of the cyst wall was done, and the removed material was sent for histological examination. In type IB, the fibular strut graft was inserted in the proximal femoral shaft, while in type IIB, it was placed in the femoral neck. After placing the fibular strut grafts, the remaining voids were filled with cancellous allograft chips. The locking plate was fixed to the lateral part of the proximal femur with intensive care to avoid any physical damage. Fresh–frozen fibular shaft and cancellous allograft were provided by our bone bank, which harvests and stores allografts according to the standard tissue-banking protocols of allograft preparation and processing. We used a proximal humerus locking plate (AO philos plate 3.5), which better matches the small size of the proximal femur in this pediatric group of patients. We sometimes bent the plate to direct the locking screw in line with the femoral neck. Post-operative antibiotic prophylaxis using 50 mg/kg cephazolin was administrated for 24 hours. Partial weight bearing and waking with crutches were started three days after the surgery. Progressive weight bearing was planned, considering cortical thinning and pathologic fracture. In patients with pathologic fractures, weight-bearing was delayed to three weeks, and progressive weight-bearing was encouraged.