Table 6 Comparison of adjacent segment degeneration
|  | PLIF (n = 74) | M-TLIF (n = 74) | P |
|---|---|---|---|
Lumber disc herniation, n (%) | Â | Â | 0.257 |
 No | 60 (81.08%) | 65 (87.84%) |  |
 Yes | 14 (18.92%) | 9 (12.16%) |  |
Lumbar Spinal Stenosis, n (%) | Â | Â | 1.000 |
 No | 72 (97.30%) | 73 (98.65%) |  |
 Yes | 2 (2.70%) | 1 (1.35%) |  |
Spondylolisthesis, n (%) | Â | Â | 0.612 |
 No | 73 (98.65%) | 71 (95.95%) |  |
 Yes | 1 (1.35%) | 3 (4.05%) |  |
Thoracolumbar fracture, n (%) | Â | Â | 0.120* |
 No | 74 (100%) | 70 (94.59%) |  |
 Yes | 0 | 4 (5.41%) |  |
Osteophyte of anterior edge of vertebral body (> II grade), n (%) |  |  | 0.029 |
 No | 62 (83.78%) | 71 (95.95%) |  |
 Yes | 12 (16.22%) | 3 (4.05%) |  |
Osteophyte of posterior margin of vertebral body, n (%) | Â | Â | 0.366 |
 No | 66 (89.19%) | 70 (94.59%) |  |
 Yes | 8 (10.81%) | 4 (5.41%) |  |
Ligament calcification | Â | Â | 1.000 |
 No | 69 (93.24%) | 70 (94.59%) |  |
 Yes | 5 (6.76%) | 4 (5.41%) |  |
Intervertebral disc cavity | Â | Â | 1.000 |
 No | 72 (97.30%) | 73 (98.65%) |  |
 Yes | 2 (2.70%) | 1 (1.35%) |  |
Modic changes | Â | Â | 1.000 |
 No | 73 (98.65%) | 73 (98.65%) |  |
 Yes | 1 (1.35%) | 1 (1.35%) |  |