In China, there are many patients with shoulder pain. Due to the lack of knowledge about shoulder joint diseases, shoulder pain of unknown origin is often arbitrarily diagnosed as “frozen shoulder”. In fact, most of the causes of shoulder pain are not frozen shoulder, so frozen shoulder should not be used as a scapegoat for all the causes of shoulder pain. With the international development of “orthopedic sports medicine” and “shoulder surgery”, the medical community is becoming more and more knowledgeable about shoulder disorders. Shoulder pain or limited shoulder movement occurs frequently in the middle-aged and elderly population. The pain may radiate to the back or upper extremities and may even be accompanied by nighttime pain, often waking up in the middle of sleep. The limitation of shoulder joint movement can be manifested as difficulty in lifting the shoulder joint, which makes the simplest daily activities such as combing hair, putting on and taking off clothes, bathing, etc. become “difficult” problems. Many patients with shoulder pain do not go to a professional doctor, but only do functional exercises and self-rehabilitation at home based on some hearsay experiences, which leads to a large number of shoulder pain patients being misdiagnosed and mistreated, and even worsening their condition. As a result, most patients believe that “frozen shoulder is not curable”. In fact, frozen shoulder is not a generic term for unexplained pain around the shoulder joint, but a more accurate name would be “frozen shoulder” or “adhesive capsulitis”. It occurs in middle-aged and elderly people between the ages of 40 and 70, with an incidence of about 2% to 5%, and is more common in women than men. Since the etiology and pathogenesis of the disease are still inconclusive, further research on the epidemiology, pathophysiology and treatment of frozen shoulder is needed. The prognosis of shoulder arthritis treatment varies. With the booming development of “orthopedic sports medicine” and “shoulder surgery” in the international arena, the medical community is becoming more and more aware of shoulder arthritis. The most common disorders that are confused with frozen shoulder are “periprosthetic impingement”, “rotator cuff injury”, “glenoid labral injury”, “supraspinatus” and “calcific tendonitis”. Calcific tendonitis”, “cervical spondylosis”, etc. These diseases have significant differences in terms of treatment and prognosis. One study found that rotator cuff injuries were found in up to 60% of older adults over the age of 60 who visited a doctor for shoulder pain, and their incidence was much higher than that of frozen shoulder. The rotator cuff is the collective name for four tendons that wrap around the head of the humerus in a sleeve-like fashion and whose main function is to aid in the movement and stability of the shoulder joint. The mechanism of rotator cuff injury can be divided into two types: acute injury and chronic strain injury. Acute injuries are common when lifting heavy objects, supporting the shoulder during a fall, being pulled by external forces, etc. For example, a passenger standing on a bus with a hand-held lever may suffer a rotator cuff injury if he or she suddenly encounters an emergency brake. Chronic rotator cuff injuries are common in elderly people over 60 years old; in addition, they are also common in people who are engaged in long-term sports such as tennis, baseball, badminton, swimming and other sports that require the upper limbs to be raised above the head. Rotator cuff injuries are mainly characterized by pain during shoulder abduction and lifting, and in severe cases, the affected shoulder needs the help of the opposite hand to complete the lifting action because of weakness. If patients with rotator cuff injuries are allowed to perform functional exercises such as “wall climbing” or artificially pulling, the tears in the rotator cuff may increase and aggravate the injury. It is recommended that patients with shoulder pain seek treatment from a specialist shoulder surgeon or orthopedic sports medicine physician after a clear diagnosis. Some patients with shoulder pain can be relieved by oral anti-inflammatory and pain relieving medications and local closure therapy. For conditions in which conservative treatment is ineffective, joint stiffness is difficult to relieve, and shoulder weakness is dysfunctional, surgical treatment may be considered. At present, arthroscopic surgery has the advantages of small incision, fast recovery and good efficacy.