Table 6. Comparisons of biomechanical parameters at L3 among the four groups at 4-, 8- and 12-week postoperation.
| Group | 4-week postoperation |
8-week postoperation |
12-week postoperation |
|||
|---|---|---|---|---|---|---|
| Stiffness | Maximun force | Stiffness | Maximun force | Stiffness | Maximun force | |
| SHAM | 806.06±385.33 | 178.17±27.10 | 739.04±267.86 | 198.50±53.22 | 793.53±372.56 | 191.03±48.01 |
| OVX+NS | 633.96±230.66 | 173.50±24.70 | 466.29±120.20 | 135.33±43.43 | 428.05±166.72 | 136.58±57.05a |
| OVX+E | 679.56±195.79 | 178.00±41.52 | 575.23±262.26 | 148.83±34.79 | 915.85±107.66 | 202.07±30.54d |
| OVX+iCR | 696.97±218.53 | 150.17±35.83 | 554.96±169.06 | 153.67±10.23 | 729.65±256.09 | 164.78±50.72c |
Biomechanical changes in bone stiffness and bone strength at L3 in SHAM, OVX+NS, OVX+E and OVX+iCR groups at 4-, 8- and 12-week postoperation. Data represented the means ± standard deviation (SD), n = 6 rats in each group. Compared with SHAM group, a means p<0.05, b means p<0.01; Compared with OVX+NS group, c means p<0.05, d means p<0.01.