Fig. 4

Lower limb long-film X-ray. Severe genu varum in a 57-year-old female patient with no extraarticular deformity (a). Bilateral severe femoral bowing seen preoperatively in an 85-year-old female patient enrolled in this study (b). Postoperative X-rays of patient B (c). The right side was treated using conventional instruments and the left side was treated using PSI