On examination there is tenderness which is maximum over or slightly anterior to the lateral epicondyle. Typically, Symptoms increase as wrist extensor is resisted with increasing extension of the elbow. (Verhaar et al., 1996 Careful evaluation is important to rule out the radial tunnel syndrome. This radial nerve neuropathy results from compression of the posterior interosseous nerve at any point along its path between the radial head and the supinator muscle especially at the arcade of Frohse. Differentiation between the radial tunnel syndrome and lateral epicondylitis is based primarily on the character and location of the pain. In radial tunnel syndrome, maximal tenderness is distal to the epicondyle at the leading edge of the supinator; electromyograms can occasionally show signs of denervation of the radial nerve. (H. Mollet et al., 2005)