evidence: The levels of decompression determined by MRI + (PM or DTI) in the experimental group were statistically significantly less than that determined by MRI + NE in the control group (p = 0.000) (Table 7).
intervention: experimental
comparator: control groups
outcome: the visual analog scale back and leg pain (VAS-BP, VAS-LP) scores and Oswestry Disability Index (ODI) scores at 2 weeks, 3 months, 6 months, and 12 months after operation