Figure 1: Various parameter measurements obtained from upright MRI scans. (a) Maximum foramen width (b) Foramen mid disc width (c) Thickness of ligamentum flavum (d) Foramen height (e) Foramen cross-sectional area (f) Disc bulge (g) Disc height at anterior and posterior disc locations (H) Disc width (I) Vertebral body width (J) Vertebral body height (K) Wedge angle (l) Lumbar height (M) Lumbar lordosis (n) Lumbosacral angle