Tennis elbow (lateral epicondylitis of humerus) is more common clinically, mainly caused by lateral elbow pain when the patient grasps and lifts objects hard. According to statistics, 10%-50% of tennis players will suffer from lateral epicondylitis of humerus. However, those workers who repeat inappropriate hard activities for a long time can also suffer from lateral epicondylitis of humerus. Etiology The most common cause of tennis elbow is tendon injury caused by repeated stretching of forearm extensor muscle, which is especially easy to occur in patients aged 35 to 50. However, young or professional tennis players increase the risk of tennis elbow due to excessive use of elbow joint. At the same time, the lack of resistance of skeletal muscle system Read More …