Osteoarthrosis, a common and frequent disease in orthopedics, is also one of the difficult orthopedic diseases. Especially serious knee osteoarthropathy has a high incidence and is tricky to treat, with poor conservative treatment efficacy and high cost of surgical treatment. The disease brings mental and physical pain and a huge economic burden to the majority of patients. From its pathogenesis and mechanism, it is mostly caused by cold, trauma, strain, degeneration, etc., resulting in cartilage lesions, osteophytes, narrowing of joint gaps, and joint instability. Therefore, as we age, the disease is inevitable, so it is also called age-related arthritis. However, it is possible to improve the quality of life by delaying the onset of the disease and its remission through maintenance and care of the joints when young. However, unfortunately, most people, especially young people, do not appreciate and take care of their healthy joints, but wait until they experience knee pain and limited extension and flexion before going to the hospital. Osteoarthrosis of the knee is not exclusive to the elderly, but can also occur in young people and even in children and adolescents, so you should start now and should take care of your joints so that you do not get osteoarthrosis after the age of 40. Here is a list of some of the bad habits and improvements in the life of each age group: 1, infancy: Some young mothers worry that breastfeeding will affect the shape of the change, artificial feeding. Disadvantages: nutritional imbalance, especially the lack of protein and minerals, affecting the development of bones and joints. Improve the program: promote breastfeeding. 2, childhood and adolescence: partial diet, resulting in malnutrition, especially obesity knee overload, resulting in deformed knee development. Improvement program: Eat a meat and vegetable diet, a diet high in calcium and protein, and promote drinking milk and getting more sunlight in winter to increase peak bone mass. 3, youth and prime of life: cold, strain, sports injuries, accidental injuries. Young people, especially women, love beauty, showing knees and legs and wearing ultra-short skirts, etc., the lower extremities are vulnerable to cold induced rheumatoid arthritis; injury to the knee in young age is one of the important bane of osteoarthrosis. No scientific exercise and dietary rehabilitation guidance after pregnancy, etc. Improvement program: pay attention to increase and decrease clothes when it is cloudy and rainy, seasonal changes, and try not to ride electric bikes and motorcycles (because the knee joint is most susceptible to cold). Special emphasis: young people love sports, but must be guided by science. Once an injury is sustained, it is important to seek medical advice, proper diagnosis and treatment, and rest and recuperation in place. After pregnancy to scientific fitness, restore physical fitness, promote body metabolism, consumption of excess fat, calcium supplements, prevention and treatment of postpartum osteoporosis. 4, middle age: strong physical labor, drinking alcohol, coffee, obesity, staying up late overworked and sports injuries. Especially women before and after menopause to prevent osteoporosis scientifically. 5, middle-aged and old age: excessive use of the knee, such as up and down stairs, climbing hills and slopes, exposure to cold, blind worship of taijiquan, older age practice backwards walking, vegetarianism, etc. Improvements: The best way to exercise is to walk or jog fast, and those with knee disease should not choose tai chi as much as possible. If you get cold once, the joint disease will be aggravated once, so it is extremely important to keep warm. Long-term vegetarian diet is not a good habit, the age of the vegetarian-based, but also must be properly supplemented with high-quality protein, such as fish, beef, eggs, etc., to prevent osteoporosis is very beneficial. Control blood sugar, blood pressure and avoid falls. Some elderly people would have had good internal organ function, once a fall resulting in a serious back or hip fracture will be devastated, unfortunately. So older people firmly do not ride bicycles and practice backwards walking. If you are around 70-75 years old and have advanced osteoarthrosis, don’t put your faith in conservative treatment and get artificial knee replacement surgery if you are still in good health, otherwise you can only prolong your life with the disease. If the disease is delayed until the internal organs are not functioning properly, it will only be regrettable.