Table 2 The perioperative condition of the two groups
|  | PLIF (n = 74) | M-TLIF (n = 74) | P |
|---|---|---|---|
Operation location, n (%) | Â | Â | 0.218* |
 L2/3 | 1 (1.35%) | 0 |  |
 L3/4 | 1 (1.35%) | 3 (4.05%) |  |
 L4/5 | 43 (58.11%) | 51 (68.92%) |  |
 L5/S1 | 29 (39.19%) | 20 (27.03%) |  |
Bone cement reinforcement, n (%) | Â | Â | 0.492 |
 No | 68 (91.89%) | 71 (95.95%) |  |
 Yes | 6 (8.11%) | 3 (4.05%) |  |
Operation time (min), mean (SD) | 180.51 (41.94) | 159.34 (34.65) | 0.001 |
Incision length (cm), mean (SD) | 9.30 (1.98) | 9.01 (1.85) | 0.368 |
Intraoperative bleeding volume (ml), mean (SD) | 186.49 (44.80) | 132.16 (55.43) | 0.001 |
Length of connecting rod (cm), mean (SD) | 4.52 (0.76) | 4.51 (0.42) | 0.894 |
Decompressed intervertebral disc (ml), mean (SD) | 7.30 (2.19) | 6.14(1.76) | 0.001 |
Extraction time of drainage tube after operation (days), mean (SD) | 3.30 (1.40) | 2.39 (0.77) |  < 0.001 |
Postoperative bed rest time (days), mean (SD) | 3.35 (0.63) | 2.95 (0.66) |  < 0.001 |
Length of stay (days), mean (SD) | 12.19 (3.53) | 10.87 (2.33) | 0.008 |