Table 2.
Results of Preoperative Evaluation.
| *Group G (SD) | *Group P (SD) | P-value | |
|---|---|---|---|
| %slip (%) | 16.9 (24.7) | 18.3 (10.3) | 0.78 |
| SLL (°) | 13.0 (5.3) | 11.9 (4.2) | 0.40 |
| LDA (°) | 5.1 (3.6) | 3.3 (3.4) | 0.05 |
| RDV (%) | 29.5 (10.4) | 25.7 (8.5) | 0.13 |
| JOA score | 14.5 (4.1) | 13.9 (5.9) | 0.70 |
| Low back pain VAS score | 61.9 (30.8) | 59.2 (28.7) | 0.73 |
*Patients were divided into two groups according to RDCV<16.5% (group P) and ≥16.5% (group G).
%slip, slip rate, SLL, segmental lumbar lordosis; LDA, local disc angle; RDV, ratio of disc height/vertebral height; RDCV, ratio of the distance from the posterior edge of the cage to the posterior wall of vertebral body/vertebral length; JOA, Japanese Orthopedic Association; VAS, visual analog scale; SD, standard deviation