In fact, there are many causes of shoulder pain, and most of them are not frozen shoulder, so you should not take “frozen shoulder” as the cause of all kinds of shoulder pain. The “frozen shoulder” should not be used as a “garbage can” for all causes of shoulder pain. Shoulder surgery in China started late, and there are many shortcomings and misconceptions about shoulder diseases, but the term “frozen shoulder” is widely accepted by the general public. In orthopedic or injury clinics, the majority of patients with unexplained shoulder pain are diagnosed as “frozen shoulder”. Many patients with shoulder pain do not go to a specialist, but simply stick plasters, smear bruising wine, take painkillers, massage and massage, and perform self-exercise for rehabilitation at home based on some hearsay experiences. In fact, frozen shoulder is not a generic term for unexplained shoulder pain around the shoulder joint. The American Academy of Shoulder and Elbow Surgeons defines frozen shoulder as “adhesive capsulitis” that causes stiffness of the glenohumeral joint. There are many different diseases that cause shoulder pain, including rotator cuff tears, acromioclavicular impingement, sternoclavicular joint disease, glenohumeral osteoarthritis, SLAP injury, tendinopathy, calcific supraspinatus tendonitis, cervical spondylosis, thoracic outlet syndrome, etc. The diagnosis of these diseases cannot be made without the specialist’s specialized differential diagnosis. These diseases can only be diagnosed with a specialist’s expertise in differential diagnosis. The treatment and prognosis of these shoulder disorders are very different. ”Frozen shoulder” or “frozen shoulder” is mainly characterized by shoulder pain and reduced active and passive mobility of the shoulder joint in all directions, with no significant abnormalities on imaging except for reduced bone mass. The disease is more common in middle-aged and elderly people in their 50s and low 50s, with a prevalence of 2% to 5%, more common in women than men. Predisposing factors include a 5-9 fold increase in the incidence of the disease when the shoulder is braked by external fixation after trauma or surgery, 10% to 20% of diabetic patients with frozen shoulder, and patients with rheumatism and rheumatoid disease are also susceptible. The earliest manifestation of frozen shoulder is limited external rotation, and the pain may extend to the back or upper extremities, even with nocturnal pain, often waking up in the middle of sleep. The limitation of the shoulder joint movement, which is difficult to lift the shoulder joint, makes it difficult to comb the hair, put on and take off the shirt, take a shower, etc. In addition to a decrease in external rotation, patients also experience pressure pain in the “rostro-humeral ligament” in the early stages of the disease. For patients with severe frozen shoulder, surgery may be an option if the dysfunction seriously affects life and work. There is a misconception among patients and non-specialists that the course of frozen shoulder is self-healing, but in fact, for patients with severe symptoms, the course of conservative treatment is long, some taking 2-3 years, and even after pain relief, there is eventually a varying degree of shoulder function loss and reduced shoulder range of motion. Minimally invasive arthroscopic treatment is currently the recommended treatment method internationally. The procedure involves the release of the anterior-inferior-posterior shoulder capsule under arthroscopic surveillance, supplemented by manual release under anesthesia during surgery, and postoperative joint mobility rehabilitation to minimize the duration of the disease and maximize the restoration of function of the affected shoulder. As the joint with the largest range of motion and the most flexibility in the body, the shoulder joint, it is recommended that patients with shoulder pain go to a more specialized arthroscopist for early consultation, standardized treatment, and early recovery after the onset of symptoms.