Radial tunnel syndrome occurs as a result of a pinched radial nerve usually at the elbow.
The radial nerve is among the three major nerves found in the arm. It starts from the neck, and runs behind the upper arm, then crosses the outer elbow to the forearm and hand.
At the elbow, the radial nerve goes through into a tight tunnel. This tunnel is formed by tendons, muscles, and bone, and is known as the radial tunnel.
someone with this syndrome may experience pain and difficulty in moving the forearm or hand.