The shoulder joint is made up of the scapula, clavicle, humerus, ligaments, joint capsule and muscle groups interconnected. They (especially the muscle groups) maintain the movement of the upper extremity with a large amount of motion. The accumulation of chronic strain, forceful twisting or contusion, and the feeling of wind, cold, and dampness in the shoulder can cause soft tissue injury, tearing, and non-bacterial inflammation in the shoulder joint, resulting in pain and dysfunction in the periacetabular joint. Shoulder pain is more common and bothers many patients, especially middle-aged and elderly patients. Shoulder disorders can no longer be replaced by a general term such as frozen shoulder. Common shoulder joint disorders can be simply divided into the following categories: I. Soft tissue diseases and injuries of the shoulder 1. Frozen shoulder: commonly known as frozen shoulder or fifty shoulder; this disease is seen in elderly people around 50 years old. As 2/3 of the bones are in contact with the joint capsule, it is prone to adhesive capsulitis on the basis of senile degeneration, causing pain and dysfunction of the posterior joint. The affected shoulder is painful all day long, especially at night. Shoulder movement is significantly limited, especially abduction and external rotation. Biceps longus tendonitis, supraspinatus tear, myelitis, rheumatoid arthritis, etc. are often the cause. X-rays can assist in the diagnosis. 2. Rotator cuff tear: Mostly seen in young adults, injury is the cause of the disease. Most of the performance shoulder and upper arm lateral pain, under the shoulder peak, pressure pain at the large node, some tears can have pain arc performance, that is, the glenohumeral joint active XiZhan 00-600 range pressure pain, 600-120. range of pain, more than 1200 and then no signs of pain. When a complete tear is present, the shoulder cannot be abducted, and after helping it to abduct to 900, abduction can be maintained. 3.Subacromial bursitis: subacromial pressure pain, there may be painful arc, common in young adults, injury is the cause of this disease. 4, supraspinatus tenosynovitis: when closed locally with procaine, the pain there disappears, and can actively lift the shoulder abductor to 1800 and powerfully; while with partial rupture of the supraspinatus lumborum, although the pain disappears after local sealing, it cannot automatically abduct the arm and lift it to 1800 or abductor weakness. If the lime salt online myocarditis X-ray examination can be seen at the large nodes with calcium deposits. 5, biceps long head key sheathitis: middle-aged and older people are common, with pain in the shoulder or upper arm lateral, pressure pain in the biceps tenosynovialis, and partial restriction of shoulder movement. Pain in the affected area when making active elbow flexion and forearm rotation under resistance. 6. Glenoid lip injury: There is a fibrocartilage glenoid lip similar to the meniscus around the articular glenoid of the shoulder swelling bone, which can also cause shoulder pain after abduction or tearing. It is diagnosed by arthroscopy and treated surgically under arthroscopy. Shoulder arthritis can be caused by a variety of causes, which can be identified based on medical history, clinical manifestations and laboratory tests. If the onset of the disease is acute, the joint area is swollen, severe pain, high fever and toxic manifestations of systemic infection, laboratory tests show increased white blood cells, rising neutrophils, and accelerated blood sedimentation. If there is purulent fluid on joint puncture, the diagnosis of septic arthritis can be confirmed. Shoulder pain is mild, with a long history of bone destruction on X-ray, note posterior joint tuberculosis. Rheumatoid arthritis of the shoulder joint develops in a different way. It can be both a localized rheumatoid inflammatory manifestation of the shoulder joint and a shoulder lesion of a rheumatoid systemic disease. Rheumatoid arthritis of the shoulder usually involves the shoulder joint bilaterally and presents with joint pain, swelling, morning stiffness and gluing. Rheumatoid factor is often positive. Primary osteoarthritis is uncommon in the shoulder joint. Osteoarthritis of the shoulder joint is most often the result of shoulder injury and long-term stress on the shoulder joint. Pain is often worse after waking up and moving around for a day. It does not decrease in the morning after a night’s rest, becomes less severe after a little activity, and worsens again in the afternoon after a long day of work. The joint is stiff, swollen, and has limited range of motion, and on X-ray, the joint space is narrowed, the subchondral bone is sclerotic, and the bone is cystic. In addition, gout, pseudogout, systemic lupus erythematosus, psoriatic arthritis, hemophilic arthritis, etc. can invade the shoulder joint. The differential diagnosis is made by combining the signs and their clinical features. Third, the incidence of tumors in and around the shoulder is second only to that of tumors around the knee. Benign bone tumors have no obvious pain unless they compress the skin or nerves or become malignant. There are two kinds of malignant bone tumors, primary and secondary. Primary malignant bone tumors are mostly solitary, with severe local pain, which is intermittent at first and persistent later before the appearance of the mass. Local superficial veins or capillary network may be dilated, skin temperature is increased, pressure pain is obvious, and even tremor can be felt or murmur can be heard. Shoulder tumors include tumors that occur in the upper part of the cerebral bone, the acromion and the clavicle. The clavicle rarely bears tumors and the patient has localized pain due to the subcutaneous location of the clavicle. The diagnosis is easier with a visible mass. If there are neurovascular symptoms in the clavicular region, the presence of pulmonary tumor should be considered. The presence of pulmonary tumor should be considered. Shoulder tumor is a flat bone and is surrounded by muscles, so early diagnosis is difficult. Malignant tumors of the shoulder swelling bone and giant cell tumors have significant pain and radiation to the arm and back. Superficial tumors are easy to detect, but deeper ones can only be detected by careful examination in comparison with the healthy side. The most common osteochondroma of the shoulder bone occurs in children and adolescents. The proximal part of the navicular bone is the third most common site for osteosarcoma and giant cell tumor of bone, and chondrosarcoma and bone metastases are also common. The most common tumor-like disorders are bone cysts. CT, MRI and digital imaging angiography do not have the above advantages, but they can clearly indicate the extent of the tumor, the richness of blood flow and the relationship with adjacent tissues and organs, which can help in surgical treatment. Elevated blood alkaline phosphatase can help diagnose osteosarcoma. Fast sedimentation and elevated globulin in blood and urine may suggest the presence of myeloma. Although a preliminary diagnosis of bone tumor can be made by history, physical examination, laboratory and imaging examinations, its final diagnosis is still determined by pathological histological examination.