The lumbar plexus is formed lateral towards the intervertebral foramina because of the ventral rami of the first 4 lumbar spinal nerves (L1-L4), which all pass through psoas important. The greater branches on 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/