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Table 4 Changes in ODI and VAS scores from baseline according to spinal instability and revision surgery

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

Outcome Had spinal instability No spinal instability P
ODI (%)
 1wk 43.61 ± 14.51 61.79 ± 18.29 0.003
 3mo 45.71 ± 12.61 69.73 ± 17.92 0.001
 1 yr 48.89 ± 15.48 74.10 ± 16.97 < 0.001
VAS for low back pain (%)
 1wk 47.05 ± 6.88 57.26 ± 11.53 0.002
 3mo 45.89 ± 8.76 60.88 ± 11.48 0.001
 1 yr 52.40 ± 8.23 65.44 ± 12.96 0.003
VAS for leg pain (%)
 1wk 50.88 ± 15.43 65.57 ± 16.47 0.012
 3mo 48.52 ± 16.03 69.87 ± 16.95 0.003
 1 yr 50.62 ± 20.71 72.26 ± 18.01 0.006
Outcome Had revision surgery No revision surgery P
ODI (%)
 1wk 46.57 ± 15.68 60.17 ± 18.93 0.018
 3mo 46.95 ± 13.84 68.16 ± 18.66 0.006
 1 yr 48.32 ± 18.56 72.86 ± 17.09 0.001
VAS for low back pain (%)
 1wk 47.03 ± 8.91 56.71 ± 11.29 0.009
 3mo 46.96 ± 8.68 59.84 ± 12.14 0.007
 1 yr 50.62 ± 9.11 65.12 ± 12.56 0.003
VAS for leg pain (%)
 1wk 52.19 ± 17.02 64.49 ± 16.68 0.048
 3mo 49.53 ± 17.61 68.50 ± 17.55 0.018
 1 yr 48.38 ± 21.03 71.57 ± 18.18 0.011
  1. VAS visual analog scale, ODI Oswestry disability index