Fig. 1

Pre- and post-planning radiographs. a Pre-planning radiograph, b lateral closed wedge distal femoral osteotomy (LCWDFO) + medial open wedge high tibial osteotomy (MOWHTO), c LCWDFO + lateral closed wedge high tibial osteotomy (LCWHTO), d medial open wedge distal femoral osteotomy (MOWDFO) + MOWHTO, and e MOWDFO + LCWHTO