Fig. 3From: Linical efficacy of percutaneous endoscopic lumbar discectomy for the treatment of lumbar spinal stenosis in elderly patients: a retrospective studyClinical outcomes before and after endoscopic decompression at different follow-up time points in group A and group B. (1) Visual analog scale (VAS) scores for back pain. (2) VAS scores for leg pain. (3) Japanese Orthopaedic Association (JOA) scoresBack to article page