In China, the term “frozen shoulder” has long been “deeply rooted” in people’s minds, and unexplained shoulder pain is often arbitrarily attributed to “frozen shoulder”, so many shoulder pain sufferers do not go to a professional doctor to seek medical advice. Therefore, many shoulder pain patients do not go to a professional doctor, but only perform functional exercises and self-rehabilitation at home according to some hearsay experiences. As a result, a large number of shoulder pain patients are misdiagnosed and mistreated, and their condition even deteriorates further. Of course, the above phenomenon is also related to the low level of shoulder surgery in China and the lack of popularization of related knowledge. As a matter of fact, frozen shoulder is not just a literal disease, but a special type of disease. Frozen shoulder occurs in middle-aged and elderly people between the ages of 40 and 70, with a prevalence of about 2% to 5%, and is more common in women than men. It is characterized by shoulder pain and limited movement, with the most obvious limitation of movement, and is known abroad as “frozen shoulder”, which describes the active and passive movement of the shoulder joint in all directions. Most of the causes of shoulder pain are not frozen shoulder, so don’t use frozen shoulder as a scapegoat for all the causes of shoulder pain. Internationally, with the booming development of “orthopedic sports medicine” and “shoulder surgery”, the understanding of shoulder disorders has become more and more advanced. The most common orthopedic disorders that are confused with frozen shoulder are “subacromial impingement syndrome”, “rotator cuff injury”, “glenoid labral injury”, and “calcified supraspinatus muscle”. supraspinatus calcific tendonitis”, “biceps tendon injury or inflammation”, “osteoarthritis of the shoulder joint”, “cervical spondylosis”, etc. The above diseases have These diseases have different treatment and prognosis. Among them, “subacromial impingement syndrome” and “rotator cuff injury” are the most important causes of shoulder pain, and some studies have found that among the elderly people over 60 years old who visit the doctor for shoulder pain, the proportion of rotator cuff injury is as high as 60%, and its incidence is much higher than that of frozen shoulder.