Symptoms of difficulty squatting may occur due to the following reasons: 1. The disease that most often presents symptoms of being afraid to squat is synovitis of the knee joint. Most of the synovitis can be due to violent blows, overwork, fractures near the joints, untreated fluid in the joints, or repeated irritation of the joints over the years and triggered by the disease, athletes and elderly obese people are very prone to appear. Whether the synovitis is acute or chronic, most of the symptoms of knee swelling, knee pain, afraid to straighten, much less bend, pain location is not fixed. Some patients with heavy inflammation may have symptoms of joint fever, and if the disease is longer, there may be symptoms of muscle atrophy on the front side of the thigh.2. Knee meniscus injuries can also appear squatting difficulties, meniscus injuries caused by squatting difficulties symptoms is, because of pain and limit the range of joint activity, sometimes there will be a sudden locking of the joint symptoms.