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Table 3 Changes in ODI and VAS scores from baseline according to the type of spinal stenosis and stenosis grade

From: Percutaneous transforaminal full endoscopic decompression for the treatment of lumbar spinal stenosis

   Type of spinal stenosis   
Outcome Foraminal stenosis Lateral recess stenosis Central stenosis P
ODI (%)
 1wk 53.73 ± 21.65 58.46 ± 20.23 59.64 ± 15.28 0.730
 3mo 59.09 ± 19.48 66.17 ± 21.20 65.45 ± 17.37 0.320
 1 yr 65.03 ± 21.19 69.32 ± 21.12 69.76 ± 16.65 0.672
VAS for low back pain (%)
 1wk 51.76 ± 12.38 55.95 ± 12.15 55.87 ± 9.77 0.723
 3mo 54.35 ± 8.06 57.87 ± 13.67 59.46 ± 13.72 0.696
 1 yr 57.95 ± 8.77 64.45 ± 14.93 62.83 ± 12.84 0.537
VAS for leg pain (%)
 1wk 62.10 ± 19.66 62.73 ± 16.72 61.74 ± 17.53 0.980
 3mo 71.57 ± 22.16 64.55 ± 16.86 61.14 ± 19.59 0.351
 1 yr 75.68 ± 20.68 66.67 ± 19.14 62.43 ± 22.31 0.172
   Stenosis grade   
Outcome Mild Moderate Severe P
ODI (%)
 1wk 61.69 ± 18.44 59.30 ± 18.70 50.71 ± 19.68 0.204
 3mo 69.98 ± 18.10 67.75 ± 17.79 52.54 ± 20.34 0.132
 1 yr 73.53 ± 17.33 73.16 ± 15.84 55.23 ± 22.55 0.069
VAS for low back pain (%)
 1wk 59.22 ± 12.25 55.43 ± 8.37 49.36 ± 13.19 0.088
 3mo 60.92 ± 14.61 60.03 ± 10.32 49.68 ± 10.49 0.037
 1 yr 67.16 ± 16.51 65.06 ± 8.81 53.16 ± 10.57 0.010
VAS for leg pain (%)
 1wk 64.14 ± 16.12 64.41 ± 18.22 56.83 ± 17.06 0.301
 3mo 71.33 ± 17.15 68.00 ± 19.32 53.32 ± 15.69 0.044
 1 yr 74.82 ± 15.90 71.42 ± 20.84 52.56 ± 18.36 0.018
  1. VAS visual analog scale, ODI Oswestry disability index