Difficulty in knee squatting is a common form of knee disorders in middle-aged and elderly people. Difficulty in knee 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 surrounding the knee joint, which can be eliminated by acupuncture and chipping to eliminate local soft tissue adhesions, reduce pain and promote knee motion function recovery. Chinese orthopedic surgery considers the pathogenesis of squatting difficulties to be due to disturbances in the flow of qi and blood. Western medicine considers it to be a chronic soft tissue disease caused by long-term congestion, edema, exudation, tissue degeneration, necrosis, hyperplasia and hypertrophy, with definite soft tissue changes around the knee joint. It is a common manifestation of knee disease in middle-aged and elderly people. Squatting difficulty may be femoral head necrosis Nowadays, more and more patients suffer from femoral head necrosis, we must pay attention to the spread of femoral head necrosis disease, then squatting difficulty may also be the early symptoms of femoral head necrosis, the following is to explain the relevant knowledge. The symptoms of femoral head necrosis are more, pain is the typical symptoms of femoral head necrosis, and according to experts squatting difficulties may also be signs of femoral head necrosis. When squatting is difficult, you should first observe whether it is accompanied by hip pain, groin pain, and in some cases, knee pain and limited thigh movement. If there are any of these symptoms, it is best to have an MRI to confirm whether there is osteonecrosis of the femoral head, even if no problem is found on the X-ray. In medicine, osteonecrosis of the femoral head is a relatively common orthopedic disease. The early symptoms of osteonecrosis of the femoral head are pain, and slowly the patient will feel sore and swollen legs, soreness and difficulty in squatting in the future activities. At the same time, experts say that for such a phenomenon, it does not necessarily mean that the difficulty in squatting is a symptom of osteonecrosis of the femur. It is possible that this is a manifestation of rheumatism or sciatic nerve, so it is better to go to the hospital for a detailed examination. We have explained above the knowledge of osteonecrosis of the femur. If you can recognize this knowledge early, you can avoid the occurrence of osteonecrosis of the femoral head. If you find any of the above types of osteonecrosis of the femoral head at home, please go to the hospital in time to avoid missing the best treatment period.