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The brachial plexus is the network of nerves that sends signals from your spinal cord to your shoulder, arm and hand. A brachial plexus injury occurs when these nerves are stretched, compressed, or in...

A nerve biopsy is a surgical procedures to collect and test a sample of abnormal tissues. The biopsy sample is examined in the lab under a microscope. Biopsy results can help the care team determine a...

Carpal tunnel syndrome is a condition that causes numbness, tingling and other symptoms in the hand and arm. Carpal tunnel syndrome is caused by a compressed nerve in the carpal tunnel, a narrow passa...

A herniated disk refers to a problem with one of the rubbery cushions (disks) between the individual bones (vertebrae) that stack up to make your spine. A spinal disk is a little like a jelly donut w...

Chiari malformation is a condition in which brain tissue extends into your spinal canal. It occurs when part of your skull is abnormally small or misshapen, pressing on your brain and forcing it downw...

Back pain is one of most common reason that people see a doctor or miss work. Most people have back pain at least once. For most people, back pain is a short-term annoyance. For others, back pain can ...

The cubital tunnel is a space in the elbow that allows for passage of the ulnar nerve around the elbow. This nerve also is known as the funny bone nerve. Cubital tunnel syndrome occurs when the nerve ...

As you age, the soft disks between your vertebrae begin to dry out and shrink. This narrows the space between the vertebrae, which makes the spine less stable and decreases its flexibility. This can c...

Syringomyelia is the development of a fluid-filled cyst (syrinx) within your spinal cord. Over time, the cyst may enlarge, damaging your spinal cord and causing pain, weakness and stiffness, among oth...

Scoliosis is a sideways curvature of the spine that occurs most often during the growth spurt just before puberty. While scoliosis can be caused by conditions, such as cerebral palsy and muscular dyst...