Table 3

Summary of gait kinematics

ParameterGroup; mean [range], degreesp value*
AnteriorPosteriorLateral
Contralateral pelvic tilt
 Preoperative2.00 [−5.08 to 10.7]3.07 [−1.43 to 11.85]2.60 [−1.10 to 7.78]0.82
 6 wk1.46 [−0.78 to 5.21]†3.19 [0.66 to 6.46]5.03 [1.92 to 10.29]†0.030
 12 wk2.46 [−0.74 to 5.90]2.94 [−0.19 to 9.82]3.56 [−1.48 to 9.39]0.73
Ipsilateral trunk lean
 Preoperative1.18 [−0.64 to 5.21]‡2.82 [−0.80 to 3.53]‡1.37 [0.12 to 4.72]0.032
 6 wk0.75 [−0.48 to 2.03]†1.41 [−0.97 to 4.37]§3.34 [1.50 to 6.04]†§0.011
 12 wk0.88 [−1.32 to 3.06]†1.72 [0.96 to 3.42]2.42 [1.57 to 3.33]†0.042
Peak abduction angle
 Preoperative6.00 [3.74 to 17.81]3.07 [0.48 to 7.56]5.14 [0.28 to 12.91]0.46
 6 wk5.70 [1.24 to 9.65]†8.55 [4.15 to 12.99]10.17 [6.88 to 13.10]†0.033
 12 wk8.38 [3.26 to 14.07]7.84 [3.32 to 11.14]10.38 [5.59 to 16.65]0.34
Peak flexion angle
 Preoperative10.16 [1.95 to 34.20]6.19 [2.91 to 22.67]3.52 [1.90 to 24.77]0.46
 6 wk5.96 [0.77 to 21.96]4.50 [1.18 to 12.32]4.42 [−4.31 to 18.65]0.94
 12 wk3.45 [0.66 to 15.59]0.98 [−3.95 to 12.20]1.12 [−7.84 to 16.13]0.79
Peak extension angle
 Preoperative10.87 [3.12 to 34.59]7.11 [1.95 to 23.50]4.50 [2.82 to 25.20]0.48
 6 wk7.21 [0.72 to 23.08]5.83 [0.54 to 13.04]5.46 [−4.90 to 19.45]0.93
 12 wk4.89 [0.89 to 17.31]2.50 [0.29 to 11.26]2.48 [−1.23 to 12.90]0.79
Peak internal rotation angle
 Preoperative4.94 [0.04 to 19.62]7.47 [0.43 to 15.58]7.10 [−2.41 to 17.10]0.83
 6 wk1.39 [−9.74 to 17.45]5.24 [−1.44 to 22.42]10.37 [−5.74 to 19.03]0.15
 12 wk1.32 [−14.08 to 6.91]†4.81 [−4.41 to 18.48]9.10 [−4.00 to 18.95]†0.012
Peak external rotation angle
 Preoperative8.11 [0.80 to 15.59]3.66 [0.26 to 17.88]1.17 [−17.26 to 11.78]0.35
 6 wk10.04 [0.19 to 16.61]5.50 [2.79 to 18.10]3.85 [0.19 to 19.89]0.30
 12 wk10.65 [5.35 to 16.22]†5.08 [−4.86 to 10.99]0.98 [−2.57 to 9.11]†0.010

  • ↵* 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 anterior and posterior group.

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