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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 ...
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.
The more common source of lumbar plexopathy is a direct or secondary [2] tumor involvement of the plexus with MRI being the typical confirmation tool. [15] Tumors typically present with enhancement of nerve roots and T2-weighted hyperintensity. [2] The differential consideration of RILP requires taking a medical history and neurologic ...
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MRI of the lumbar spine showing spinal stenosis Neurogenic claudication is one subtype of the clinical syndrome of lumbar spinal stenosis (LSS). [ 9 ] No gold standard diagnostic criteria currently exist, but evaluation and diagnosis is generally based on the patient history, physical exam, and medical imaging . [ 1 ]
The lateral cutaneous branch ("iliac branch") pierces the internal oblique muscles and the external oblique muscles immediately above the iliac crest. [4] It is distributed to the skin of the gluteal region, behind the lateral cutaneous branch of the subcostal nerve; the size of this branch bears an inverse proportion to that of the lateral cutaneous branch of the subcostal nerve.
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.
It is the largest branch of the lumbar plexus, and arises from the dorsal divisions of the ventral rami of the second, third, and fourth lumbar nerves (L2, L3, and L4). [ 1 ] [ 2 ] The nerve enters Scarpa's triangle by passing beneath the inguinal ligament , just lateral to the femoral artery .