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This template is a navigation box relating to anatomy that provides links to related topics. When editing the links in this template: Include a single link to the article. Do not add: synonyms or information about the structure itself (eg nerve or muscle supply). These should be found within an article.
The lumbar plexus is a web of nerves (a nerve plexus) in the lumbar region of the body which forms part of the larger lumbosacral plexus. 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 .
The anterior divisions of the lumbar nerves, sacral nerves, and coccygeal nerve form the lumbosacral plexus, the first lumbar nerve being frequently joined by a branch from the twelfth thoracic. For descriptive purposes this plexus is usually divided into three parts: lumbar plexus; sacral plexus; pudendal plexus
The first three lumbar nerves, and the greater part of the fourth together form the lumbar plexus. The smaller part of the fourth joins with the fifth to form the lumbosacral trunk, which assists in the formation of the sacral plexus. The fourth nerve is named the furcal nerve, from the fact that it is subdivided between the two plexuses.
The most significant impact of magnetic resonance neurography is on the evaluation of the large proximal nerve elements such as the brachial plexus (the nerves between the cervical spine and the underarm that innervate shoulder, arm and hand), [9] the lumbosacral plexus (nerves between the lumbosacral spine and legs), the sciatic nerve in the pelvis, [10] as well as other nerves such as the ...
Steady-state free precession: SSFP: Maintenance of a steady, residual transverse magnetisation over successive cycles. [7] Creation of cardiac MRI videos (pictured). [7] Effective T2 or "T2-star" T2* Spoiled gradient recalled echo (GRE) with a long echo time and small flip angle [8] Low signal from hemosiderin deposits (pictured) and ...
Management of brachial or lumbosacral plexopathy depends on the underlying cause. No matter the cause of plexopathy, physical therapy and/or occupational therapy may promote recovery of strength and improve limb function. In the case of a mass lesion causing compression of the brachial or lumbosacral plexus, surgical decompression may be warranted.
Magnetic resonance myelography (MR myelography or MRI myelography) is a noninvasive medical imaging technique that can provide anatomic information about the subarachnoid space. It is a type of MRI examination that uses a contrast medium and magnetic resonance imaging scanner to detect pathology of the spinal cord , including the location of a ...