The lumbar plexus is fashioned lateral towards the intervertebral foramina with the ventral rami of the primary 4 lumbar spinal nerves (L1-L4), which all go through psoas main. The much larger branches in the plexus exit the muscle to pass sharply downward to reach the abdominal wall and also the https://www.sgvascularctr.com/swelling-leg-treatment-singapore/