Difficulty squatting is a common form of knee disease in middle-aged and elderly people, so what tests are needed when squatting is difficult? Here’s what you need to know. The clinical manifestation of squatting difficulty is knee pain and difficulty in 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. Bone and joint plain radiographs of the extremities: are taken of the extremities and associated joints and are used to confirm the condition of the bone after fracture. Follow the doctor’s orders for the examination. There is no need to panic about X-rays. The patient should be exposed to a safe amount of 100 roentgens or less during the X-ray examination, and the permissible number and duration of exposures should be worked out according to this amount. The examination of the movement of the limbs and joints: the main observation is the posture and range of movement and whether the movement causes pain, and the limbs and joints are usually examined for passive movement, while both active and passive movement must be examined if neuromuscular disorders are suspected. There are three general methods of measuring the angle of joint movement, the simplest being visual inspection, the more accurate being measurement with a goniometer, and the more accurate being measurement with an X-ray photograph, but the latter is not commonly used. Arthroscopy: It is a rod-shaped optical instrument with a diameter of about 5 mm that is used to observe the internal structure of a joint. This instrument has been used since 1970. The arthroscope is equipped with a lens at the end of a thin tube, which is inserted into the joint, and the internal structure of the joint is displayed on a monitor. As a result, the structures inside the joint can be directly observed. Arthroscopy is not only used for diagnosis of diseases, but has been widely used for treatment of joint diseases. Arthroscopic surgery is a minimally invasive procedure that was first used on the knee joint and later on the hip, shoulder, ankle, elbow and small joints such as the fingers.