Retrograde Intramedullary Nail Fixation for Derotational Femoral Osteotomy for Recurrent Femoropatellar Instability

Figure 4

Radiographs at eight months after surgery are shown. (a) Full-length standing AP radiography of the lower extremity six months after surgery. Coronal alignment is symmetrical. (b) Femoral-tibial mechanical angle is 0.51° of valgus and mDLFA is 86°. (c) Lateral radiography of the femur. It shows complete healing of the osteotomy (red arrow). Also, the proximal locking of the nail and the entry point chosen in the distal femur for the LPFM can be observed.