Table 4.
Mean preoperative outcome measures (standard deviation)
| Outcome measure | Femoral ring allograft | Titanium cage | p-value |
|---|---|---|---|
| Oswestry Disability Index | 57 (14) | 54 (14) | 0.394 |
| VAS back pain | 7.2 (1.7) | 7.1 (1.9) | 0.846 |
| VAS leg pain | 3.8 (2.7) | 4.3 (3.2) | 0.424 |
| SF-36 domains | |||
| - Physical function | 27 (15) | 34 (19) | 0.086 |
| - Physical role | 13 (27) | 15 (32) | 0.700 |
| - Bodily pain | 22 (14) | 24 (16) | 0.365 |
| - General health | 54 (24) | 54 (22) | 0.991 |
| - Vitality | 27 (18) | 35 (18) | 0.038* |
| - Social function | 35 (22) | 40 (28) | 0.396 |
| - Emotional role | 47 (49) | 41 (47) | 0.608 |
| - Mental health | 50 (19) | 56 (20) | 0.179 |
*Statistically significant