Table 3.
Maximum and minimum values of joint moments in stance during downslope (−50%), level (0%) and upslope (50%) walking before and after denervation of SO and LG muscles
Joint | Variable | Denervation | Downslope | Level | Upslope |
---|---|---|---|---|---|
Ankle | max. | before | 0.20 ± 0.06 | 0.22 ± 0.05 | 0.33 ± 0.06 |
after |
0.20 ± 0.06 |
0.24 ± 0.04 |
0.35 ± 0.07* |
||
values at max. | before | 0.11 ± 0.05 | 0.15 ± 0.04 | 0.23 ± 0.06 | |
difference |
after |
0.16 ± 0.07* |
0.20 ± 0.03* |
0.29 ± 0.06* |
|
T0-crossing | before | 88 ± 10 | 91 ± 6 | 94 ± 3 | |
after | 88 ± 9 | 96 ± 2* | 96 ± 2* | ||
Knee | max. | before | 0.20 ± 0.05 | 0.22 ± 0.04 | 0.20 ± 0.05 |
after |
0.19 ± 0.08 |
0.18 ± 0.03* |
0.15 ± 0.03* |
||
min. | before | −0.03 ± 0.01 | −0.04 ± 0.01 | −0.09 ± 0.04 | |
after |
−0.03 ± 0.01 |
−0.04 ± 0.02 |
−0.10 ± 0.05 |
||
T0-crossing | before | 11 ± 6 | 13 ± 5 | 27 ± 8 | |
after | 19 ± 16* | 14 ± 7* | 33 ± 9 | ||
Hip | max. | before | 0.07 ± 0.02 | 0.12 ± 0.03 | 0.39 ± 0.08 |
after |
0.07 ± 0.03 |
0.11 ± 0.04* |
0.37 ± 0.10 |
||
min. | before | −0.26 ± 0.03 | −0.18 ± 0.04 | −0.16 ± 0.05 | |
after |
−0.25 ± 0.07 |
−0.18 ± 0.04 |
−0.15 ± 0.05* |
||
T0-crossing | before | 23 ± 7 | 47 ± 17 | 68 ± 5 | |
after | 26 ± 8* | 43 ± 12* | 70 ± 11* |
Data are means ± SD given in Nm/kg. T0-crossing = Time instance (in % of stance time) when the moment crosses zero. Values at maximum difference occurred at the instant indicated by arrows in figure 5. Data of 5 cats (cat No. 3 was excluded from the data set due to its atypical kinematic patterns); total number of analyzed cycles for different walking conditions ranged between 52 and 116.
p < 0.05, postdenervation value is significantly different from the corresponding value before denervation.