Fig. 4

Modified gap technique adjusting the gap inclination. a Before posterior condyle osteotomy: The rotation angle of bone resection of posterior condyle is the angle between the line of bone resection (dotted line) and posterior condylar axis (solid line). b After posterior condyle osteotomy and setting final femoral trial component: final femoral trial component gap inclination is the angle between posterior condylar axis (solid line) and tibial plateau