Fig. 5.

Pre- and postoperative radiographs of patients that have undergone corrective osteotomy at the proximal femur using indirect deformity reduction over the implant and using 3D planning and patient-specific instruments. The patient above had a post-Perthes deformity; he underwent an additional 3D-planned periacetabular osteotomy using patient-specific instruments (surgery performed at Balgrist University Hospital). The patient below had a posttraumatic malunion following a conservatively treated intertrochanteric gunshot fracture of the proximal femur (surgery performed at Cantonal Hospital St. Gallen)