Angle data at different spine sections during standing, flexion and extension conditions. Standing: stand angle in standing; ROE: range of extension; ROF: range of flexion; ROFE: range of flexion-extension.

<p>^{a, b, c, d} Indicate significant differences (P<0.05) between: ^aType 1 (n = 50), ^bType 2 (n = 173), ^cType 3 (n = 75), and ^dType 4 (n = 20). Modified type 5 (n = 132).