Table 4

Summary of gait kinetics

ParameterGroup; mean [range], %body weight × heightp value*
AnteriorPosteriorLateral
Peak abduction moment
 Preoperative4.68 [3.16 to 5.45]4.17 [2.31 to 5.51]4.49 [3.12 to 5.80]0.55
 6 wk5.04 [4.13 to 6.06]5.30 [4.40 to 6.23]4.28 [3.56 to 5.47]0.10
 12 wk5.47 [4.91 to 6.36]5.41 [4.33 to 7.07]5.36 [4.39 to 6.21]0.94
Peak flexion moment
 Preoperative2.67 [0.53 to 5.63]2.60 [0.66 to 4.16]2.25 [0.91 to 3.45]0.63
 6 wk2.73 [1.56 to 3.74]2.57 [1.03 to 3.51]2.20 [1.10 to 3.53]0.45
 12 wk3.11 [1.36 to 5.77]3.17 [1.91 to 4.12]2.80 [1.77 to 4.08]0.74
Peak extension moment
 Preoperative−0.46 [−2.21 to 0.75]−1.36 [−2.88 to 0.05]−0.99 [−2.48 to −0.11]0.13
 6 wk−1.00 [−1.89 to −0.59]−1.62 [−2.51 to −0.71]−1.08 [−2.38 to 0.05]0.20
 12 wk−1.25 [−2.70 to −0.61]†−1.39 [−2.55 to −0.79]−2.09 [−3.97 to −1.28]†0.034
Peak internal rotation moment
 Preoperative−0.38 [−0.82 to 0.004]−0.40 [−0.38 to −0.15]−0.64 [−1.25 to −0.19]0.13
 6 wk−0.63 [−1.40 to −0.18]−0.61 [−0.96 to −0.23]−0.73 [−1.14 to −0.39]0.67
 12 wk−0.72 [−1.36 to −0.18]−0.65 [−0.97 to −0.42]−0.87 [−1.38 to −0.63]0.32
Peak external rotation moment
 Preoperative0.26 [−0.03 to 0.77]0.29 [0.03 to 0.39]0.28 [−0.08 to 0.37]0.26
 6 wk0.26 [0.01 to 0.49]†0.37 [0.05 to 0.58]‡0.11 [−0.11 to 0.16]†‡0.003
 12 wk0.38 [0.19 to 1.14]†0.40 [0.02 to 0.76]‡0.22 [−0.10 to 1.56]†‡0.011
Peak vertical ground reaction force
 Preoperative1.02 [0.97 to 1.10]1.03 [0.97 to 1.13]1.02 [0.98 to 1.05]0.55
 6 wk1.05 [0.96 to 1.15]1.04 [0.97 to 1.14]1.02 [0.96 to 1.05]0.47
 12 wk1.05 [0.99 to 1.16]1.07 [1.01 to 1.20]1.05 [0.97 to 1.13]0.81
Peak propulsion at toe-off
 Preoperative0.10 [0.03 to 0.17]0.12 [0.08 to 0.19]0.11 [0.07 to 0.14]0.39
 6 wk0.13 [0.04 to 0.22]0.15 [0.12 to 0.21]0.11 [0.06 to 0.16]0.41
 12 wk0.14 [0.04 to 0.26]0.17 [0.14 to 0.22]0.15 [0.11 to 0.20]0.54

  • ↵* According to one-way analysis of variance; post hoc testing was completed when p < 0.05.

  • ↵† Post hoc significance between the anterior and lateral group.

  • ↵‡ Post hoc significance between the posterior and lateral group.