Table 4.
Surgical outcomes of subgroups
| AH (n = 15) | pH (n = 16) | P* | AL (n = 10) | PL (n = 9) | P † | AN (n = 12) | PN (n = 13) | P ‡ | |
|---|---|---|---|---|---|---|---|---|---|
| Operative time (min) | 132.7 ± 53.5 | 112.2 ± 23.5 | NS | 136 ± 59.5 | 115 ± 28.9 | NS | 133.3 ± 48.5 | 127.7 ± 71.5 | NS |
| Blood (ml) | 394.7 ± 350.2 | 278.1 ± 225.9 | NS | 324 ± 340.1 | 282.2 ± 217.4 | NS | 302.5 ± 205.5 | 276.5 ± 229.8 | NS |
| JOA score (point) | |||||||||
| Preoperative | 7.4 ± 1.6 | 7.3 ± 1.6 | NS | 6.6 ± 1.2 | 6.2 ± 0.8 | NS | 8.3 ± 0.9 | 8.1 ± 0.9 | NS |
| Postoperative | |||||||||
| 1 week | 10.1 ± 1.6 | 8.9 ± 1.6 | <0.05 | 9.5 ± 1.6 | 8.0 ± 1.1 | <0.05 | 11.3 ± 1.1 | 10.8 ± 0.9 | NS |
| 6 months | 12.1 ± 1.4 | 10.8 ± 1.3 | <0.05 | 11.4 ± 1.0 | 10.1 ± 0.8 | <0.05 | 13.5 ± 1.3 | 12.8 ± 1.3 | NS |
| 12 months | 13 ± 1.5 | 11.9 ± 1.4 | <0.05 | 12.3 ± 0.8 | 11.4 ± 0.9 | <0.05 | 14.3 ± 1.2 | 13.5 ± 1.3 | NS |
| IR (%) | |||||||||
| 1 week | 28.3 ± 8.3 | 16.4 ± 5.9 | <0.01 | 28.6 ± 9.9 | 16.7 ± 4.7 | <0.05 | 34.4 ± 8.2 | 30.4 ± 5.9 | NS |
| 6 months | 49.5 ± 7.8 | 35.6 ± 8.2 | <0.01 | 46.4 ± 4.1 | 36.1 ± 5.0 | <0.05 | 60.1 ± 13.9 | 53.2 ± 11.1 | NS |
| 12 months | 59.2 ± 13 | 48.1 ± 12.3 | <0.05 | 54.5 ± 8.1 | 48.6 ± 5.9 | NS | 69.8 ± 12 | 60.7 ± 13.5 | NS |
| Fine rate of IR (%) | 93.3 | 62.5 | NS | 90 | 77.8 | NS | 91.7 | 92.3 | NS |
Values are mean ± SD
JOA Japanese Orthopedic Association, IR improvement rate, NS not significant
* P compared between subgroup AH and PH; † P compared between subgroup AL and PL; ‡ P compared between subgroup AN and PN