Fig. 5From: Reducing surgical levels by paraspinal mapping and diffusion tensor imaging techniques in lumbar spinal stenosisComparison between two groups of improvements in functional and pain scores at 2 weeks, 3Â months, 6Â months, and 12Â months after surgery. Median values and ranges are presented. ODI Oswestry Disability Index, VASBP visual analog scale for back pain, VAS-LP visual analog scale for leg painBack to article page