Median Nerve Roots

Median Nerve Roots

The median nerve roots are the four nerve roots located in the lower cervical (neck) and upper thoracic (middle back) segments of your spine. This group of nerve roots eventually forms what is more correctly termed the median nerve. Roots C6, C7, C8 and T1 branch from your spinal cord, pass through the intervertebral foramina (spaces between vertebrae through which nerves travel) and form a union known as the brachial plexus. Brachial plexus nerve fibers proceed through the neck, armpit and arm.

Median nerve compression is the culprit behind the sensory pain and motor impairments collectively known as carpal tunnel syndrome (CTS). The carpal tunnel is a passageway in the wrist that contains the median nerve and tendons at the base of the hand. Several issues can make the carpal tunnel space too small, such as thickening tendons, arthritis, obesity or bone spurs. Excess tissues can press on the median nerve and cause a host of frustrating, painful symptoms in the affected hand. Symptoms of CTS commonly manifest in the palm, hand and forearm and can include:

  • Sharp, shooting pains
  • Paresthesia, which is the “pins and needles” sensation associated with a limb that has “fallen asleep”
  • Numbness
  • Conspicuous decrease in grip strength
  • Weakness in the thumb and first three fingers (not the pinky)
  • Atrophy of thenar muscles (muscles in the lower palm of the hand and at the base of the thumb) which are innervated by the median nerve

Bear in mind that nerve compression may occur at several adjacent sites simultaneously in the arms and hands, including compression of the radial nerve roots and ulnar nerve roots. Improper identification of the precise point or points of a pinched median nerve yield hasty, incorrect CTS diagnoses, which may lead to unproductive, or even counterproductive, therapy regimens.

When you speak with your physician about the possibility that you may be suffering from CTS or compression of the median nerve roots, he or she will likely perform a full physical exam, ask you about the severity of your symptoms, and conduct an MRI or CT scan. If you attempt a regimen of conservative therapies, but find them to be ineffective, you may begin to consider a spinal operation, especially if tests show nerve root compression in the spine.

If this is the case, contact the experts at Laser Spine Institute about our minimally invasive procedures that have helped tens of thousands of people find relief from pain. Contact Laser Spine Institute for a comprehensive review of your MRI or CT scan and for more information about compression of cervical spine nerve roots.