Preoperative and postoperative patient characteristics: clinical outcomes according to fragment type and annular defect
| All patients | Fragment-defect group (type II) | Fragment-contained group (type III) | No fragment-contained group (type IV) | |
|---|---|---|---|---|
| N | 40 (100% | 10 (25% | 18 (45% | 12 (30% |
| Mean age (years) | 46 | 48.5 | 44 | 47 |
| Mean follow-up (months) | 32.75 | 34.1 | 31.9 | 32.9 |
| Gender (F/M) | 21/19 | 4/ | 8/10 | 9/ |
| VAS | ||||
| Preoperative | 7 | 7.2 | 7 | 6.75 |
| 3-month follow-up | 2.5 | 2.7 | 2.4 | 2.5 |
| 12-month follow-up | 1.05 | 1.5 | 1 | 0.8 |
| 24-month follow-up | 0.5 | 0.4 | 0.75 | 0.37 |
| ODI | ||||
| Preoperative | 62.8 | 63.8 | 61.66 | 63.66 |
| 3-month follow-up | 24.45 | 25.8 | 25.2 | 22.16 |
| 12-month follow-up | 11.29 | 10 | 12.12 | 11.27 |
| 24-month follow-up | 7.5 | 6 | 8.5 | 7.5 |
| Rate of recurrent/persistent sciatica | ||||
| 3-month follow-up | 27.7% (11) | 30% (3) | 22.2% (4) | 33.3% (4) |
| 12-month follow-up | 8.1% (3/37) | 0% | 6.25% (1/16) | 18.18% (2/11) |
| 24-month follow-up | 8.8% (3/34) | 0% | 6.26% (1/16) | 25% (2/8) |
| Rate of documented reherniation | None | None | None | None |
| Rate of reoperation | 1 | None | None | Malpositioned screw was corrected with a second operation that was performed mo after the first |