Femora showing the fixation configuration of the L-osteotomy. (A) A sagittal osteotomy was assumed from the trochanteric fossa down the middle of longitudinal femoral axis until the defined length of the osteotomy. A horizontal osteotomy was done to unite the medial cortical surface with the distal end of the longitudinal osteotomy. The plate was then fitted to the lateral contour of the proximal femur. The most proximal screw on the lower fragment was positioned 3 mm below the horizontal osteotomy and defined as D1 as described by Papavasilio. The additional fixation screws were placed with a constant interval of 12 mm and defined as D2. All fixation screws were inserted perpendicularly to the femoral contour. Postoperative configurations with (B) 116 mm, (C) 126 mm, (D) 136 mm and (E) 146 mm osteotomy lengths.