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Table 3 Comparison of VAS and ODI Scores in the Two Groups

From: Comparison of lumbar endoscopic unilateral laminotomy bilateral decompression and minimally invasive surgery transforaminal lumbar interbody fusion for one-level lumbar spinal stenosis

  LE-ULBD MIS-TLIF P value
N 32 80
VAS leg pain Pre-op 7.2 ± 0.8 7.0 ± 0.9 0.655
3 months Post-op 2.1 ± 0.6* 2.1 ± 0.5* 0.847
12 months Post-op 1.6 ± 0.5* 1.5 ± 0.5* 0.061
24 months Post-op 1.5 ± 0.5* 1.4 ± 0.5* 0.252
VAS back pain Pre-op 5.6 ± 1.4 5.5 ± 1.5 0.672
3 months Post-op 2.3 ± 0.5* 2.5 ± 0.7* 0.249
12 months Post-op 2.1 ± 0.3* 2.2 ± 0.6* 0.335
24 months Post-op 1.8 ± 0.4* 2.0 ± 0.5* 0.328
ODI (%) Pre-op 53.2 ± 4.6 52.9 ± 6.2 0.767
3 months Post-op 25.1 ± 3.7* 26.6 ± 4.2* 0.126
12 months Post-op 21.4 ± 2.6* 21.3 ± 2.8* 0.780
24 months Post-op 18.8 ± 2.1* 19.4 ± 2.1* 0.212
  1. N indicates number of patients included in the statistical analysis, LE-ULBD lumbar endoscopic unilateral laminotomy bilateral decompression, MIS-TLIF minimally invasive surgery transforaminal lumbar interbody fusion, Pre-op preoperative, Post-op postoperative, VAS Visual Analog Scale, ODI Oswestry Disability Index. *P < 0.05 versus preoperative data