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[[File:Gray822.png|thumb|Gray822.png]] == Lumbosacral Plexus ==

The '''lumbosacral plexus''' is a network of [[nerve]]s that supplies the [[lower limb]]s, [[pelvis]], and [[perineum]]. It is formed by the anterior rami of the [[spinal nerve]]s from the [[lumbar vertebrae|lumbar]] (L1-L4) and [[sacral vertebrae|sacral]] (L4-S4) regions of the [[spinal cord]]. The lumbosacral plexus is divided into the [[lumbar plexus]] and the [[sacral plexus]].

=== Lumbar Plexus ===
The [[lumbar plexus]] is formed by the anterior rami of the L1-L4 spinal nerves. It is located within the [[psoas major]] muscle and innervates the [[anterior]] and [[medial]] compartments of the [[thigh]]. Major nerves arising from the lumbar plexus include:
* [[Femoral nerve]]
* [[Obturator nerve]]
* [[Lateral cutaneous nerve of the thigh]]
* [[Iliohypogastric nerve]]
* [[Ilioinguinal nerve]]
* [[Genitofemoral nerve]]

=== Sacral Plexus ===
The [[sacral plexus]] is formed by the anterior rami of the L4-S4 spinal nerves. It is located on the posterior wall of the [[pelvis]], in front of the [[piriformis]] muscle. The sacral plexus innervates the [[posterior]] compartment of the thigh, most of the [[leg]], and the [[foot]]. Major nerves arising from the sacral plexus include:
* [[Sciatic nerve]]
* [[Pudendal nerve]]
* [[Superior gluteal nerve]]
* [[Inferior gluteal nerve]]
* [[Posterior cutaneous nerve of the thigh]]
* [[Nerve to quadratus femoris]]
* [[Nerve to obturator internus]]

=== Clinical Significance ===
Injuries to the lumbosacral plexus can result in significant [[neurological]] deficits, affecting [[motor]] and [[sensory]] functions of the lower limbs. Common causes of lumbosacral plexopathy include [[trauma]], [[tumors]], [[diabetes mellitus]], and [[childbirth]]. Symptoms may include [[pain]], [[weakness]], [[numbness]], and [[tingling]] in the affected areas.

=== See Also ===
* [[Peripheral nervous system]]
* [[Spinal cord]]
* [[Nerve plexus]]
* [[Lower limb anatomy]]

[[Category:Anatomy]]
[[Category:Peripheral nervous system]]
[[Category:Neuroanatomy]]
[[Category:Medicine]]

{{Anatomy-stub}}

Lumbosacral plexus - Revision history

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