&Lateral epicondylitis=Lateral epicondylitis (tennis elbow) is an overuse injury involving the extensor muscles that originate on the lateral epicondylar region of the distal humerus.  Any activity involving wrist extension and/or supination can be associated with overuse of the muscles originating at the lateral epicondyle. Patients present complaining of lateral elbow and forearm pain exacerbated by use. The typical patient is a man or woman aged 35-55 years who either is a recreational athlete or one who engages in rigorous daily activities. Upon examination, the patient has a point of maximal tenderness on or just distal (5-10 mm) to the lateral epicondyle in the area of the extensor carpi radialis brevis (ECRB) muscle. Wrist extension or supination (but not flexion or pronation) against resistance with the elbow extended should provoke the patient's symptoms. Another helpful test is the chair raise test. The patient stands behind their chair and attempts to raise it by putting their hands on the top of the chair back and lifting. In patients with lateral epicondylitis, pain results over the lateral elbow.