It occurs when there is damage to the radial nerve, which travels down the arm and supplies movement to the triceps muscle at the back of the upper arm, extension to the wrist, and helps in movement and sensation of the wrist and hand. Dysfunction of a single nerve group such as the radial nerve is classed as mononeuropathy . The usual causes are direct trauma, prolonged pressure on the nerve, and compression of the nerve from nearby body structures.
Entrapment involves pressure on the nerve where it passes through a narrow structure.
In some cases, no detectable cause can be identified. The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Inc. Any duplication or distribution of the information contained herein is strictly prohibited. Inc. All rights reserved.