Table 2 Gait characteristics four months post-surgery (n = 249)

Steps (number)

25.2

10.2

8–83

Speed (m/sec)

0.62

0.25

0.20–1.42

Cadence (steps/min)

91

16

55–132

Walk Ratio (step length/cadence)

0.45

0.13

0.11–0.81

Step length (m)

0.40

0.12

0.13–0.81

Step width (cm)

8.93

3.9

0.35–22.0

Step time (s)

0.682

0.128

0.455–1.099

Single support (%)

30.8

4.6

17.4–38.9

Double support (s)

0.536

0.197

0.210–1.159

Variability gait characteristics

Mean

SD

range

SD step velocity (m/sec)

0.05

0.02

0.02–0.11

SD step length (m)

0.03

0.01

0.01–0.08

SD step width (cm)

1.9

0.7

0.6–4.1

SD step time (s)

0.047

0.039

0.007–0.319

SD single support (s)

0.036

0.018

0.007–0.126

SD double support (s)

0.060

0.067

0.008–0.627

Asymmetry gait characteristics %

Mean

SD

range

Step length asymmetry

15

21

0–163

Step time asymmetry

10

10

0–46

Single support time asymmetry

14

15

0–76