Walking Stair ascending 17 cm   Patients (n=18) Controls (n=20) Difference 95% CI P-value t-test Patients (n=18) Controls (n=20) Difference 95% CI P-value t-test Maximum ankle dorsiflexion moment terminal stance [Nm/kg] 1.38 (0.14) 1.45 (0.16) [-0.12; 0.01] 0.021 1.20 (0.15) 1.34 (0.18) [-0.19;-0.07] <0.001 Maximum ankle power absorption [Watt/kg] 0.60 (0.14) 0.50 (0.16) [ 0.04; 0.16] <0.001 0.22 (0.13) 0.40 (0.36) [-0.32;-0.12] <0.001 Maximum ankle power generation [Watt/kg] 3.12 (0.56) 3.05 (0.6) [-0.15; 0.29] 0.510 2.89 (0.53) 3.65 (0.69) [-0.43; 0.03] 0.090 Maximum knee flexion moment loading response [Nm/kg] 0.45 (0.17) 0.38 (0.18) [-0.16;-0.05] 0.024 0.75 (0.21) 0.88 (0.22) [-0.15;-0.01] 0.067 Maximum knee extension moment terminal stance & pre swing [Nm/kg] -0.02 (0.15) -0.20 (0.13) [0.06; 0.27] <0.001 -0.24 (0.08) -0.29 (0.10) [0.05; 0.19] <0.001 Maximum knee flexion moment terminal stance & pre swing [Nm/kg] 0.25 (0.09) 0.21 (0.05) [0.00; 0.06] 0.024 0.28 (0.15) 0.22 (0.20) [0.06; 0.19] <0.001 Knee flexion impulse [Nm*s/kg] 23.73 (9.55) 27.52 (6.55) [-6.85;-0.73] 0.016 29.15 (13.97) 28.59 (7.69) [-2.40; 6.11] 0.384 1st peak knee adduction moment [Nm/kg] 0.41 (0.14) 0.45 (0.09) [-0.09; 0.00] 0.042 0.42 (0.20) 0.53 (0.13) [-0.14;-0.01] 0.020 2nd peak knee adduction moment [Nm/kg] 0.38 (0.15) 0.44 (0.10) [-1.08; 0.01] 0.015 0.32 (0.15) 0.31 (0.11) [-0.05; 0.05] 0.939 Maximum knee power maximum [Watt/kg] 0.42 (0.15) 0.54 (0.24) [-0.18; 0.04] 0.003 1.99 (0.54) 2.30 (0.58) [-0.38; 0.03] 0.094 Maximum hip flexion moment loading response [Nm/kg] 0.78 (0.28) 0.66 (0.19) [0.03; 0.20] 0.008 0.67 (0.22) 0.78 (0.20) [-0.09; 0.07] 0.790 Maximum hip extension moment terminal stance & initial swing [Nm/kg] 0.92 (0.21) 0.83 (0.16) [0.03; 0.16] 0.007 0.43 (0.20) 0.36 (0.16) [0.01; 0.14] 0.003 1st peak hip adduction moment [Nm/kg] 0.88 (0.14) 0.90 (0.12) [-0.07; 0.03] 0.352 0.81 (0.15) 0.80 (0.14) [-0.04; 0.06] 0.711 2nd peak hip adduction moment [Nm/kg] 0.73 (0.15) 0.83 (0.10) [-0.15;-0.05] <0.001 0.69 (0.18) 0.69 (0.12) [-0.07; 0.04] 0.675

Table 4: Group effects for walking and stair ascending. Mean (SD), 95%-confidence intervals of the difference and p-values of t-test for kinetic parameters during the stance phase of walking and stair ascending in patients with good functional outcome after TKA and in age-matched control subjects. CI: Confidence Interval. Note: Independent samples t-tests were used to confirm clinically relevant differences indicated by the confidence interval of the difference between groups not containing 0.