What is a lumbar plexus?
The lumbar plexus is an essential collection of nerves that arise from mostly the lumbar spinal cord. The term plexus refers to a “web” of nerves that is created just lateral to where T12-L5 exit the spinal cord via intervertebral foramina.
How many lumbar plexus are there?
It is formed by the divisions of the first four lumbar nerves (L1-L4) and from contributions of the subcostal nerve (T12), which is the last thoracic nerve….
| Lumbar plexus | |
|---|---|
| TA98 | A14.2.07.002 |
| TA2 | 6517 |
| FMA | 5908 |
| Anatomical terms of neuroanatomy |
Where is the lumbar plexus located?
It is located on the posterior abdominal wall, anterior to the transverse processes of the lumbar vertebrae and within the posterior portion of the psoas major muscle. The lumbar plexus gives rise to several branches which supply various muscles and regions of the posterior abdominal wall and lower limb.
What does the lumbar plexus innervate?
The lumbar plexus passes through the psoas major muscle and innervates the skin and muscles of the abdominal wall, thigh, and external genitalia. The largest nerve that forms part of the lumbar plexus is the femoral nerve, which innervates the anterior thigh muscles and some of the skin distal to the inguinal ligament.
How do you treat lumbar plexus?
The rehabilitation is dependent on the condition that is affecting the function of the lumbar plexus….Treatment of Lumbar Radiculopathy
- Physical therapy focusing on core stabilization exercises.
- Pain killers.
- Nonsteroidal anti-inflammatory drugs (NSAIDs)
- Muscle relaxants.
- Steroids.
What are the lumbar nerves?
The lumbar nerves are five spinal nerves which arise from either side of the spinal cord below the thoracic spinal cord and above the sacral spinal cord. They arise from the spinal cord between each pair of lumbar spinal vertebrae and travel through the intervertebral foramina.
How lumbar plexus is formed?
Lumbar plexus is formed within the psoas major muscle from the ventral rami of the first four lumbar nerves and a contribution of the last thoracic nerve (T12). It forms the iliohypogastric, ilioinguinal, genitofemoral, lateral cutaneous nerve of thigh, obturator and femoral nerves.
What causes lumbar plexus pain?
The most frequent causes are high-energy trauma, sports injuries, penetrating trauma, and surgery that results in damage to the plexus. In particular, injuries that cause damage between the spinal cord and spinal ganglion (proximal) lead to severe pain.
What does lumbar mean in medical terms?
Medical Definition of lumbar 1 : of, relating to, or constituting the loins or the vertebrae between the thoracic vertebrae and sacrum the lumbar region. 2 : of, relating to, or being the abdominal region lying on either side of the umbilical region and above the corresponding iliac region.
What area of the body is affected by the lumbar plexus?
Lumbar plexus: Back, abdomen, groin, thighs, knees, calves. Sacral plexus: Pelvis buttocks, genitals, thighs, calves, feet. Coccygeal plexus: A small region over the coccyx (your “tailbone”)2
How lumbosacral plexus is formed?
The lumbosacral plexus is formed by ventral rami of the lumbar and sacral nerves, T12 through S4. The lumbar part is formed by roots from T12 to L4 and the sacral component by L4–S4 roots. These divide into anterior and posterior divisions, which give rise to anterior and posterior branches, respectively.
What do the lumbar nerves do?
Functions of the Lumbar Spinal Nerves L1 spinal nerve provides sensation to the groin and genital regions and may contribute to the movement of the hip muscles. L2, L3, and L4 spinal nerves provide sensation to the front part of the thigh and inner side of the lower leg.