Fig. 4

Changing of extension and flexion gaps with PS PCT and trial components. The component gaps (CGs) with PS PCT before and after the release of femoral intercondylar notch capsule, and the final CGs with femoral trial component were examined at extension (a). The CGs at flexion with PS PCT before and after the capsular release were also examined; then, the estimated final CGs after gap control (flexion CGs with PS PCT minus the gap control amount) and actual final CGs at flexion were compared (b). (*P < 0.01). PS PCT, posterior-stabilised pre-cut trial component