highly significantp < 0.001
TKA had a highly significant impact on extensor moment at 10° (2.3 Nm (SD 0.2), vs native, two-way RMANOVA p < 0.001, vs Bi-UKA p = 0.002), 20° (3.0 Nm (SD 0.2) 40% reduction vs native two-way RMANOVA p < 0.001, 38% reduction vs Bi-UKA, p < 0.001), and 30° (3.1 Nm (SD 0.1) vs native two-way RMANOVA p < 0.001, vs Bi-UKA p < 0.001).