Radial tunnnel Syndrome. The pain is in the upper part of the forearm. Most often mistaken as tennis elbow or lateral epicondylitis. At times, the pain may be in the shoulder region or the neck.
The pain is due to the radial nerve getting trapped under the edge of an obliquely directed supinator muscle. The pain restricts day to day activity. The X-Rays and MRI are not helpful.
The only finding is the location of the pain is helpful in making the diagnosis. If the pain does not settle with time, the nerve has to be freed surgically with gratifying results.