Timing

 Statistic

Pre-op

< 1.5 yr FU

> 1.5 yr FU

< 1.5 yr FU

> 1.5yr FU

> 1.5yr FU

HSP (n = 15)

HSP (n = 15)

HSP (n = 9)

vs. pre-op

vs. pre-op

vs. < 1.5 yr FU

Mean ± 1SD

Mean ± 1SD

Mean ± 1SD

p-value

p-value

p-value

Gait measures

Cadence (1/s)

1.89 ± 0.38

1.62 ± 0.53

1.81 ± 0.37

0.013^*

0.375

0.678

Stride length (m)

0.64 ± 0.52

0.57 ± 0.41

0.68 ± 0.35

0.064

0.953

0.441

Walking velocity (m/s)

0.86 ± 0.24

0.68 ± 0.29

0.87 ± 0.29

0.016^*

0.678

0.214

Pelvis

Mean pelvic tilt (°)

17.79 ± 5.29

16.63 ± 9.78

19.60 ± 3.69

0.733

0.953

0.441

ROM pelvic tilt (°)

10.16 ± 3.67

8.40 ± 3.30

8.60 ± 3.02

0.009^*

0.515

0.021^*

ROM pelvic obliquity (°)

11.45 ± 5.38

8.69 ± 3.06

9.66 ± 3.24

0.047^*

0.173

0.11

Mean pelvic rotation (°)

0.10 ± 0.39

-0.19 ± 0.17

0.05 ± 0.39

0.865

0.594

0.441

ROM pelvic rotation (°)

22.13 ± 9.18

20.35 ± 7.65

16.66 ± 6.67

0.427

0.11

0.214

Hip

Max hip extension during stance (°)

5.39 ± 15.67

2.43 ± 13.88

0.12 ± 11.06

0.394

0.767

0.953

Max hip rotation (°)

18.53 ± 6.27

7.09 ± 10.22

9.61 ± 6.49

0.003^**

0.008^*

0.594

Min hip rotation (°)

-4.01 ± 7.64

-15.31 ± 8.57

-15.55 ± 7.56

0.006^*

0.011^*

0.859

Angle at initial contact (°)

47.02 ± 8.38

40.48 ± 11.03

41.17 ± 8.08

0.053

0.11

0.26

Knee

Max knee extension during stance (°)

19.79 ± 22.21

3.28 ± 9.66

4.55 ± 7.23

0.015^*

0.26

0.953

Timing max knee extension (%)

31.65 ± 9.33

32.59 ± 9.64

32.68 ± 8.29

0.955

0.515

0.515

Max knee flexion during swing (°)

62.12 ± 9.49

54.13 ± 7.70

58.19 ± 8.68

0.020^*

0.374

0.314

Timing max knee flexion (%)

80.10 ± 4.72

79.03 ± 5.66

76.10 ± 3.58

0.363

0.214

0.594

ROM knee flexion (°)

42.33 ± 21.32

50.85 ± 13.39

53.64 ± 9.14

0.125

0.374

0.953

Angle at initial contact (°)

37.02 ± 16.35

19.83 ± 11.63

20.36 ± 9.55

0.002^**

0.051

0.678

Ankle

Max ankle dorsiflexion during stance (°)

12.58 ± 17.50

13.80 ± 6.59

14.74 ± 6.94

0.865

0.859

0.953