Table 5.

Psoas major width measurement analysis

Parameters	L2–L3	L3–L4	L4–L5
Male	1.74 ± 0.52	2.79 ± 0.68	3.92 ± 0.61
Female	1.04 ± 0.48	1.93 ± 0.59	3.29 ± 0.57
P value	< 0.001	< 0.001	< 0.001
Male + Female	1.39 ± 0.61	2.36 ± 0.77	3.61 ± 0.67

All values are mean ± SD [cm]; Psoas major width: L2–L3 versus L3–L4, P < 0.001; L3–L4 versus L4–L5, P < 0.001; L2–L3 versus L4–L5, P < 0.001