I. Why does elbow pain occur? Some patients complained of soreness and swelling on the outside of the elbow when wringing towels, lifting heavy objects or playing sweaters, and when the pain is severe, there is pressure pain, what’s wrong? This symptom is probably due to “tennis elbow”. The patient was puzzled, saying that he never played tennis, so how did he get “tennis elbow”? “Tennis elbow” is also known as “humeral epicondylitis” and is used to describe a range of symptoms that occur in the lateral part of the elbow joint. It is named after the tennis player in whom it is found, but epidemiologically, the incidence of “tennis elbow” is higher in non-athletes than in athletes. The lateral epicondyle of the humerus is the general starting point of the forearm extensor muscles, and it is believed that epicondylitis of the humerus is a chronic micro-tear of the starting point of the forearm extensor muscles, especially the radial carpal extensor muscles, and that the repeated contraction of the muscles pulls on the muscle finger points, causing a cumulative injury. Pathological examination is often visible as local scar tissue formation and tiny fracture avulsion blocks wrapped in scar tissue. Certain activities in daily life such as painting, chef cutting vegetables, butcher chopping meat, rowing, hammering or screwdriving can cause tennis elbow, in addition to direct injury to the external epicondyle of the humerus and muscle strain and sprain after impact can also cause the corresponding performance. Second, how to treat elbow pain? More than 95% of tennis elbow can be treated satisfactorily through non-surgical treatment, especially in the early stage or the first episode of tennis elbow, the symptoms can be eliminated through non-surgical treatment measures, and recurrence can be avoided by accepting and adhering to functional rehabilitation exercises. Non-surgical treatment often includes rest, ice, medication (ibuprofen and other anti-inflammatory and analgesic drugs), closed therapy and physiotherapy. Physiotherapy includes ultrasound, iontophoresis, electrical stimulation, massage, soft tissue activities, friction massage, stretching plus strength exercise, etc. For acute 1-2 times of steroid closure treatment in areas with obvious pressure pain, it will be helpful if the injection site is correct, often several milligrams of hydrocortisone plus 0.5% procaine is injected into the most obvious area of pressure pain, directly to the periosteum, and at the same time with the manual tendon treatment, can achieve very good results. Alternatively, manipulation under anesthesia is also a treatment option!