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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 ...
This narrowing can be caused by bone spurs, spondylolisthesis, inflammation, or a herniated disc, which decreases available space for the spinal cord, thus pinching and irritating nerves from the spinal cord that become the sciatic nerve. [15]
Spinal MRI is the imaging of choice to investigate the spine and intervertebral discs. [1] Meanwhile, lumbar discography is used to demonstrate degeneration and herniation of lumbar intervertebral discs by injecting a dye into the nucleus pulposus of the discs. The procedure is also used to reproduce pain back pain for those who have such symptoms.
Functional magnetic resonance imaging (fMRI) of the spinal cord (spinal fMRI) is an adaptation of the fMRI method that has been developed for use in the brain. Although the basic principles underlying the methods are the same, spinal fMRI requires a number of specific adaptations to accommodate the periodic motion of the spinal cord, the small cross-sectional dimensions (roughly 8 mm × 15 mm ...
Plain X-rays of the lumbar or cervical spine may or may not show spinal stenosis. The definitive diagnosis is established by either computerized tomography or magnetic resonance imaging (MRI) scanning. Identifying the presence of a narrowed canal makes the diagnosis of spinal stenosis. [15] [16] [17]
A sciatic nerve injury occurs between 0.5% and 2.0% of the time during a hip replacement. [7] Sciatic nerve palsy is a complication of total hip arthroplasty with an incidence of 0.2% to 2.8% of the time, or with an incidence of 1.7% to 7.6% following revision.
A doctor can diagnose a patient with spondylolisthesis through a physical exam and imaging tests, such as a spinal X-ray, CT scan or MRI. Low-grade spondylolisthesis is the most common type, but ...
A heavily scrutinized anatomic variation involves sciatic nerve branching around the piriformis using the 6 category classification first described by Beaton and Anson. In this classification, the normal anatomy (type A) seen in about 80% of people is where the sciatic nerve passes under the piriformis muscle at the greater sciatic notch.
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