The phenotypic morphology of human lumbar plexus roots associated with changes in the thoracolumbar vertebral count and trade-off.

This suggests that it may be significant to consider it as a shorter or longer trunk type, which are a fewer or an additional transitional nerve components from the abdominal wall to the lower limbs 26 , 27 , or the position of the LST, which is the boundary between the lumbar and sacral plexuses, may be determined by its relative position to the surrounding structures, such as the pelvis or sacroiliac joint, as research objectives in previous anatomical studies (Chiba, 1992; Chiba et al ., 1994) 28 , 29 .

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