Shoulder coagulation (frozen shoulder), also known as “frozen shoulder”, “fifty shoulder”, and “leaky shoulder”, is a degenerative and chronic aseptic inflammation of the muscles, tendons, synovial bursa, and joint capsule surrounding the shoulder joint. It is a degenerative and chronic aseptic inflammation of the muscles, tendons, synovial bursa and joint capsule surrounding the shoulder joint. It is characterized by pain and limited functional activity of the shoulder due to internal and external adhesions of the joint. It occurs mostly after middle age, with a peak incidence at the age of 50-60. The incidence of frozen shoulder is high. According to foreign statistics, about 1 in 50 people suffer from frozen shoulder every year, accounting for 2%-5% of the total population. The incidence is slightly higher in women than in men. The cause of shoulder arthritis is generally believed to be the degeneration of the soft tissues around the shoulder joint, due to cold, accumulated strain, minor trauma and other factors, not timely treatment and exercise shoulder activity reduction, resulting in shoulder joint adhesions, shoulder pain, limited activity and the formation of the disease. According to Chinese medicine, this disease is caused by old age and physical weakness, deficiency of liver and kidney, deficiency of qi and blood, loss of tendon support, and external invasion of wind, cold and dampness. However, the exact causative factors are not well understood.