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Table 4 The model to predict responsible nerve roots in LDD patients with diagnostic doubt

From: A valid model for predicting responsible nerve roots in lumbar degenerative disease with diagnostic doubt

A B C D E Total score Result Risk (%)
Stenosis locations Score VAS score Score Neurological deficit Score VAS improvement Score SNRB nerve roots Score
Neuroforamen 4 ≥8 3 Motor 1 ≥75 7 L4/5 Or L5/S1 3 ≥16 Very high ≥89.3
5 ~ 7 2 Sensory 1 50 ~ 74 5 11 ~ 16 High 57.6 ~ 82.7
Lateral recess or Central 0 3 ~ 5 1 Reflexes 1 25 ~ 49 3 Others 0 5 ~ 10 Low 12.5 ~ 49.4
≤2 0 None 0 ≤24 0 <5 Very low <8.6
  1. LDD lumbar degenerative disease, SNRB selective nerve root block, VAS Visual analog scale