The lumbar plexus is shaped lateral to your intervertebral foramina because of the ventral rami of the 1st four lumbar spinal nerves (L1-L4), which all go through psoas main. The greater branches from the plexus exit the muscle to go sharply downward to get to the abdominal wall along with https://www.sgvascularctr.com/swelling-leg-treatment-singapore/