Long-term standing occupation may be a cause; over-activity of patients and bilateral lower limbs of unequal length may also lead to arthropathy; congenital hip dysplasia or car accidents at a young age, resulting in hip dysplasia is gradually increasing; rheumatoid arthritis and ankylosing spondylitis may also involve the hip joint; some need to take hormones for a long time because of blood diseases, resulting in femoral head necrosis; some patients are long-term alcohol consumption, which leads to femoral head necrosis; and some patients are divers suffering from decompression sickness, which leads to femoral head necrosis and hip osteoarthrosis. Finding the cause is as difficult as identifying the hip lesion, and there are nearly 20 different causes of femoral head necrosis alone. The causes of osteoarthrosis include femoral head necrosis, joint trauma, dysplasia, rheumatoid arthritis, and hemophilic arthritis. Osteoarthritis is also related to the patient’s age and individual physical condition. Arthritis means that there is inflammation in the joint area and the main damage is wear and tear. Osteoarthritis is most often seen in older people, obese body types, and those with a history of trauma. Rheumatoid arthritis can involve joints throughout the body and can even involve lesions in the heart, kidneys and muscle health. Inflammation acts on the joints, causing stiffness and swelling that comes and goes. Rheumatoid arthritis is usually seen in young women.