||It has been suggested that this article be merged with Spinal nerves. (Discuss) Proposed since April 2014.|
|Nerve: Lumbar nerves|
Areas of distribution of the cutaneous branches of the posterior divisions of the spinal nerves. The areas of the medial branches are in black, those of the lateral in red.
Plan of lumbar plexus.
|Anatomical terms of neuroanatomy|
The medial branches of the posterior divisions of the lumbar nerves run close to the articular processes of the vertebræ and end in the multifidus muscle.
The lateral branches supply the erector spinae muscles.
The upper three give off cutaneous nerves which pierce the aponeurosis of the latissimus dorsi at the lateral border of the erector spine muscles, and descend across the posterior part of the iliac crest to the skin of the buttock, some of their twigs running as far as the level of the greater trochanter.
The anterior divisions of the lumbar nerves (rami anteriores) increase in size from above downward.
The first and second, and sometimes the third and fourth lumbar nerves are each connected with the lumbar part of the sympathetic trunk by a white ramus communicans.
The first three and the greater part of the fourth are connected together in this situation by anastomotic loops, and form the lumbar plexus.
The fourth nerve is named the nervus furcalis, from the fact that it is subdivided between the two plexuses.
Hsu, Philip S., MD, Carmel Armon, MD, and Kerry Levin, MD. "Lumbosacral Radiculopathy: Pathophysiology.Clinical, Features, and Diagnosis." www.uptodate.com. Uptodate, 11 Jan. 2011.Web. 26 Sept. 2012. http://www.physiologie.uni-mainz.de/physio/mittmann/ThalFallZ3.pdf.
Loizidez, Alexander, MD, Siegfried Peer, MD, Michaela Plaikner, MD, Verena Spiss, MD, and HannesGruber, MD. "Ultrasound-guided Injections in the Lumbar Spine." www.medultrason.ro. Medical Ultrasonography, 20 Jan. 2011. Web. 26 Sept. 2012. http://www.medultrason.ro/assets/Magazines/Medultrason-2011-vol13-no1/10loizides.pdf
Zhu, Jie, MD, and Obi Onyewu, MD. "Alternative Approach for Lumbar Transforaminal Epidural Steroid Injections." www.painphysicianjournal.com. Pain Physician, 21 Apr. 2011. Web. 26 Sept. 2012. http://www.painphysicianjournal.com/2011/july/2011;14;331-341.pdf
- nerve/lumbnerv[ dead link ] at the Memorial University of Newfoundland
- lumbar+nerves at eMedicine Dictionary