Table 3.

Spatiotemporal parameters

Spatiotemporal parameters	Mean preoperative scores (SD) N = 12	Mean scores control group (SD) N = 10	p valuea	Mean postoperative scores (SD) N = 12	p valueb
Walking velocity (m/s)	0.95 (0.09)	1.25 (0.15)	p < 0.001	0.93 (0.25)	n.s.
Stride length (m)	1.10 (0.18)	1.38 (0.14)	p = 0.004	1.17 (0.39)	n.s.
Foot progression angle (°)	7.0° (3.8°)	6.4° (2.5°)	n.s.	5.8° (3.6°)	n.s.

SD standard deviation, N number n.s. nonsignificant

^aDifference between preoperative scores and scores control group

^bDifference between preoperative and postoperative scores