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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 ...
The brachial plexus is a network of nerves (nerve plexus) formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit, it supplies afferent and efferent nerve fibers to the chest, shoulder, arm, forearm, and hand.
It is posterior to the brachial plexus, [3] and the axillary artery and vein. [4] This takes it deep to the clavicle. [2] It rests on the outer surface of the serratus anterior muscle. It extends along the side of the thorax to the lower border of the serratus anterior muscle, supplying fibres to each of the muscle's digitations. [5] [6]
If plexopathy is suspected after imaging, an EMG performed by a neurologist or physiatrist can help confirm a plexopathy, and clarify the localization within the brachial or lumbosacral plexus. Following electrodiagnostic testing, further imaging may be obtained of relevant soft tissue structures with either ultrasound or MRI.
Thoracic outlet syndrome; The right brachial plexus, viewed from in front.: Specialty: Vascular surgery, thoracic surgery: Symptoms: Pain, weakness, loss of muscle at the base of the thumb, swelling, paleness, bluish coloration [1] [2]
Of all brachial plexus injuries, axillary nerve palsy represents only .3% to 6% of them. [3] Signs and symptoms ... An MRI (magnetic resonance imaging) ...
The thoracodorsal nerve arises from the posterior cord of the brachial plexus. It is derived from their ventral rami (in spite of the fact that the latissimus dorsi is found in the back) of cervical nerves C6-C8. [1] [3] It is derived from fibres of the posterior divisions of all three trunks of the brachial plexus. [4]
A brachial plexus injury (BPI), also known as brachial plexus lesion, is an injury to the brachial plexus, the network of nerves that conducts signals from the spinal cord to the shoulder, arm and hand. These nerves originate in the fifth, sixth, seventh and eighth cervical (C5–C8), and first thoracic (T1) spinal nerves, and innervate the ...