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Table 1 Angle of each root exiting outward to the corresponding intervertebral foramen.

From: Clinical anatomy and 3D virtual reconstruction of the lumbar plexus with respect to lumbar surgery

Nerve root Angle to sagittal plane (degrees)
L1 20.4 ± 4.1
L2 22.1 ± 4.3
L3 26.9 ± 4.9
L4 30.4 ± 5.8
L5 32.9 ± 4.4