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Table 3 Comparison of balance, motion, strength, and gait parameters between THA group and control group

From: Persisting inter‐limb differences in patients following total hip arthroplasty four to five years after surgery? A preliminary cross‐sectional study

  THA group Control group p-value Cohen’s d
Strength [Nm/kg]
 Flexion 1.43 ± 0.35 1.90 ± 0.40 0.01* 1.09
 Extension 0.83 ± 0.17 1.18 ± 0.23 0.001* 1.56
 Abduction 0.96 ± 0.23 1.41 ± 0.24 < 0.001* 1.74
 Adduction 1.05 ± 0.29 1.29 ± 0.23 0.08 0.75
Motion [°]
 Flexion 89.13 ± 17.27 107.07 ± 6.79 0.004* 1.31
 Extension 33.92 ± 7.22 39.85 ± 8.75 0.04* 0.89
 Abduction 36.74 ± 8.58 52.19 ± 5.13 0.000* 2.30
Balance bipedal stance [mm]
 COP length 417.06 ± 162.28 382.81 ± 121.39 0.63 0.20
 SD in AP 3.18 ± 1.00 2.84 ± 0.94 0.74 0.14
 SD in ML 5.31 ± 1.55 4.19 ± 1.09 0.06 0.81
Balance single-leg stance [mm]
 COP length 783.10 ± 309.65 676.63 ± 202.43 0.63 0.20
 SD in AP 9.23 ± 4.17 7.41 ± 1.49 0.37 0.37
 SD in ML 10.01 ± 5.17 7.83 ± 1.25 0.29 0.44
Gait
 Velocity [m/s] 1.29 ± 0.25 1.43 ± 0.17 0.10 0.68
 Step length [m] 0.74 ± 0.09 0.80 ± 0.08 0.14 0.61
 Stance duration [s] 0.58 ± 0.08 0.56 ± 0.07 0.37 0.37
 Swing duration d [s] 0.47 ± 0.04 0.47 ± 0.03 0.68 0.17
 One leg stance [%] 44.90 ± 2.57 45.39 ± 2.56 0.26 0.47
  1. * Differences statistically significant (p < 0.05)