Related Experiment Video
Updated: May 28, 2025

Targeting Gray Rami Communicantes in Selective Chemical Lumbar Sympathectomy
Published on: January 10, 2019
Lumbar plexus - review
Nicol Zielinska1, Marta Pośnik2, Izabella Kaczmarczyk2
1Department of Clinical Anatomy, Masovian Academy in Plock, Płock, Poland. nicol.zielinska@stud.umed.lodz.pl.
Abstract:
The lumbar plexus is a collection of nerves, and it originates from the anterior rami of the T12-L5 laterally to the intervertebral foramina. It gives off 6 peripheral nerves, and in the available literature there are a lot of descriptions of each nerve and its possible morphological variations. In some cases, the occurrence of accessory nerve or absence of whole nerve is observed. In other cases, morphological variations regarding the origin, course, or division into more branches are also noticed. Such variations may be associated with some clinical aspects. Understanding the anatomical variations of the lumbar plexus's nerves is essential for procedures involving the lower abdomen, regional anaesthesia, and managing nerve entrapment syndromes. The main aim of this review is to present condensed information on the lumbar plexus based on the available literature. A further aim is to compare the classification systems and the results of previous studies in adults and foetuses. This manuscript also includes information on the most common clinical implications associated with anatomical variations of the individual nerves of the lumbar plexus.
Related Concept Videos
Spinal Nerves: Plexus II
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Spinal Nerves: Anatomy
There are 31 bilateral pairs of spinal nerves, each emerging from the spinal cord through the intervertebral foramina—openings between adjacent vertebrae. These nerves are...
The Spinal Cord
Nerve Supply of the GI Tract
The enteric nervous system consists of two major plexuses: the myenteric plexus (Auerbach's plexus) and the submucosal plexus (Meissner's plexus). These plexuses are located within the layers of...
Local Anesthetics: Clinical Application as Spinal Anesthesia

