Difficulty squatting is a common form of knee disease in middle-aged and elderly people. What conditions should be differentially diagnosed with difficulty squatting? The clinical manifestations of squatting difficulties are knee pain and difficulty squatting. Physical examination reveals localized muscle tension around the painful area of the knee joint, with clear pressure points, and some patients may palpate hard nodes. Difficulty in squatting is a common manifestation of knee disorders in middle-aged and elderly people. Difficulty in squatting is essentially a chronic soft tissue disorder due to long-term congestion, edema, exudation, tissue degeneration, necrosis, hyperplasia and hypertrophy, and there are clear areas of soft tissue changes in the tissues around the knee joint, which can be eliminated by acupuncture and chipping to eliminate local soft tissue adhesions, reduce pain and promote the movement of the knee joint function recovery. Synovitis of the knee joint: It is a multifaceted disease whose onset is mainly in the knee joint. The knee is the joint with the largest number of synovial membranes, the largest joint surface and the most complex structure of the human body. Because the synovial membrane of the knee is extensive and located in the superficial part of the limb, there are more opportunities for injury and infection. It can cause temporary or long-term partial loss of labor, which is harmful to both the patient and society. Single leg semi-squatting pain: is one of the main symptoms diagnosed in patellofemoral joint cartilage injury. Articular cartilage injuries are very common in sports injuries, but because diagnosis is difficult, especially early diagnosis is almost impossible in routine examination, so it is often overlooked and not treated in a timely manner. However, no matter what kind of cartilage injury, it may eventually lead to degenerative necrosis of cartilage cells and leave permanent damage, so it has attracted attention in recent years. Any factor that affects the normal secretion of the synovial membrane or the cartilage extrusion mechanism of the joint and prevents normal joint movement can cause damage to the articular cartilage.