Osteoarthritis is a common joint condition, although mostly seen in middle-aged and elderly people, but the disease can start from the age of 20, the incidence of osteoarthritis will also increase with the growth of age. 1, osteoarthritis pain is mainly characterized by insidious attacks, persistent dull pain, pain is the main symptom of the disease, but also the main cause of dysfunction, mostly occurs after the activity, rest can be relieved, as the disease progresses, joint activities can be limited by pain, even at rest can also occur pain, sleep patients may be hidden severe pain and wake up. 2, the knee is a joint often involved in osteoarthritis There will be a joint karate sound, pain when walking, improve after rest, feel stiff joints when sitting and standing, walking and relaxing the muscles can make the stiffness will be relieved or disappear, the symptoms are sometimes light and heavy, or even vary from day to day, can lead to osteophytes, resulting in joint enlargement, internal exudate, acute swelling will be bleeding in the joint cavity, when the disease progresses knee joint movement Restriction of knee movement when the disease progresses, can cause disuse muscle atrophy, and even the occurrence of knee valgus or inversion deformity. 3, the hip joint is also susceptible to damage Most of the patients are over 50 years old, more men than women, some patients will have ischemic necrosis of the femoral head or femoral neck fracture, or congenital hip dislocation, clinical manifestations are mainly hip pain, can be radiated to the groin, inner thigh or even above the knee, began to occur during activity and weight-bearing, with the progress of the disease, the pain will become persistent, walking limp, when the development of serious disease When the disease develops seriously, the hip joint is flexed and internally flexed, and the compensatory lumbar vertebrae are anteriorly convex, then there can be serious lower back pain, even unable to walk, and daily activities are severely limited, even leading to disability.