Clinical Outcomes of Posterior Lumbar Interbody Fusion versus Minimally Invasive Transforaminal Lumbar Interbody Fusion in Three-Level Degenerative Lumbar Spinal Stenosis

Table 2

Clinical outcomes of PLIF versus MIS-TLIF in three-level spinal stenosis.

Parameters	PLIF ()	MIS-TLIF ()	value
Operation time (min)	227.5 ± 17.1	270.8 ± 33.7	0.01
Blood loss (mL)	908.3 ± 242.9	666.7 ± 314.3	0.04
Hospital stay	15.5 ± 1.6	12.5 ± 2.8	0.00
VAS of back pain
Preoperative	6.1 ± 1.1	5.9 ± 1.1	0.63
6 months after operation	2.9 ± 0.8	2.5 ± 0.9	0.03
12 months after operation	2.0 ± 0.7	1.7 ± 0.8	0.17
VAS of leg pain
Preoperative	6.1 ± 1.0	5.8 ± 1.4	0.48
6 months after operation	2.7 ± 1.01	2.3 ± 1.0	0.18
12 months after operation	1.6 ± 0.7	1.2 ± 1.0	0.12
SF-36
Preoperative	41.3 ± 3.6	43.4 ± 4.8	0.06
6 months after operation	57.8 ± 2.7	58.3 ± 2.0	0.44
12 months after operation	61.7 ± 2.6	62.39 ± 1.8	0.32
ODI
Preoperative	37.8 ± 1.5	38.2 ± 1.9	0.35
6 months after operation	18.6 ± 1.7	19.3 ± 1.6	0.14
12 months after operation	18.4 ± 1.1	18.7 ± 1.1	0.33
Complications
Surgical infection	0/36	2/24	0.08
Cerebral fluid leakage	3/36	1/24	0.53

versus preoperative.