bone, joint, and muscle disorders
Radial Tunnel Syndrome
Introduction
Radial tunnel syndrome is a disorder resulting from compression (pinching) of a branch of the radial nerve in the forearm or back of the arm or at the elbow. (See also Overview of Hand Disorders .) The radial tunnel is called a tunnel because it is a narrow area through which the radial nerve passes around the elbow and through the forearm to the hand. The tunnel is made of the surrounding muscles, tendons, and ligaments. Causes of compression of the radial nerve at the elbow include injury, Ganglia , Compression of the radial nerve results in cutting, piercing, or stabbing pain affecting the top of the forearm and back of the hand and side of the elbow. Pain results when the person tries to straighten the wrist and fingers. There is no numbness because the radial nerve carries more fibers that control movement rather than sensation. In advanced cases, the muscles that straighten the thumb and fingers become weak. Doctors base the diagnosis of radial tunnel syndrome on an examination. 