Numbness and tingling are usually not present. Tennis elbow is a repetitive overuse injury of proximal forearm muscles in the body. Repetitive overuse injuries occur from prolonged loads on muscles and tendons. Excessive use of a hammer is just one example of an activity which can lead to tennis elbow. Tennis elbow can also emerge from faulty body mechanics while sitting at a computer with a keyboard that is positioned too high for the elbow and wrist.
Proper posture is an important element to prevent tennis elbow.
While sitting at a computer, one should keep a 90 angle at the elbows, knees and hips to minimize the chance of overloading the forearm muscles. Playing tennis with poor techniques can also result in tennis elbow, the origin of the generic injury name. The proper medical term for tennis elbow is lateral epicondylitis. The lateral epicondyle is the distal outer boney protuberance of the upper arm bone called the humerus. The wrist extensor muscles insert into the lateral epicondyle and this is the area which gets inflamed when one has tennis elbow.