(a) Preoperative planning shows a 13° anterior slope (white lines). The planned osteotomy sites are marked (black lines). (b) At surgery, the tibial tuberosity osteotomy was hinged proximally, and two K-wires were placed to mark the plane of opening wedge osteotomy. (c) Fluoroscopic images show the 15 mm wedge used to open the osteotomy site. The arrow shows the tibial tuberosity osteotomy. (d) Tentative stabilization of tibial tuberosity fragmented using two 3.2 mm drill bits in order to check for patellar height and tracking prior to definitive fixation.
