ODI | ||||||
Foraminal Stenosis Type | Preoperative | Postoperative 1 mo | Postoperative 6 mo | Postoperative 12 mo | Postoperative 24 mo | P |
Stable type I | 64.20 ± 13.10 | 39.90 ± 10.08 | 35.52 ± 8.38 | 14.20 ± 5.42 | 7.12 ± 3.54 | <0.001 |
Stable type II | 56.50 ± 15.20 | 44.13 ± 12.04 | 35.90 ± 7.40 | 15.2 ± 4.68 | 8.22 ± 3.58 | <0.001 |
Stable type III | 62.10 ± 12.16 | 32.16 ± 9.26 | 24.12 ± 6.60 | 13.90 ± 5.04 | 6.80 ± 2.98 | <0.001 |
Stable type IV | 55.40 ± 14.80 | 43.20 ± 10.80 | 32.10 ± 7.92 | 16.10 ± 4.98 | 8.60 ± 2.50 | <0.001 |
Unstable type I | 59.60 ± 11.92 | 42.25 ± 8.84 | 27.10 ± 7.88 | 14.05 ± 5.16 | 8.12 ± 3.24 | <0.001 |
Unstable type II | 62.7 ± 16.26 | 35.32 ± 9.68 | 32.16 ± 7.54 | 11.90 ± 4.30 | 8.80 ± 3.02 | <0.001 |
Unstable type III | 54.10 ± 13.84 | 39.15 ± 8.26 | 33.95 ± 6.12 | 8.62 ± 4.72 | 12.25 ± 3.90 | <0.001 |
Unstable type IV | 73.00 ± 6.12 | 37.25 ± 9.02 | 28.60 ± 7.96 | 14.20 ± 6.54 | 8.50 ± 4.00 | <0.001 |
Note: Data provided as mean ± SD. P value shows statistical significance between preoperative ODI and ODI 24 mo after surgery.
ODI, Oswestry Disability Index.