Fig. 2From: Efficacy of lumbar decompression under large-channel spinal endoscope in elderly patients with segmental lumbar spinal stenosisSagittal balance of the lumbar spine and lumbar—pelvic parameters. Indicators include pelvic incidence angle (PI), lumbar lordosis angle (LL), intervertebral height (DH), pelvic inclination angle (PT), oblique angle (SS), L1 plumb line distance from S1 (LASD)Back to article page