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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...

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...

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 ...

A spinal fracture is a break and/or dislocation of a vertebra in your spine. Some fractures are the result of a traumatic injury, such as a traffic accident, gunshot round or fall, and require emergen...

Cervical spondylosis is a general term for age-related wear and tear affecting the spinal disks in your neck. As the disks dehydrate and shrink, signs of osteoarthritis develop, including bony project...

Sciatica refers to pain that radiates along the path of the sciatic nerve, which branches from your lower back through your hips and buttocks and down each leg. Typically, sciatica affects only one si...

Spinal stenosis is a narrowing of the spaces within your spine, which can put pressure on the nerves that travel through the spine. It occurs most often in the lower back and neck, and is commonly cau...

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...

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...

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...