The majority of women who change artificial knee joints should control their weight after surgery.

The knee joint refers to the cartilage between the big bone and the calf bone. If it is worn out, it can be replaced with an artificial knee joint. According to the statistics of the Health Insurance Bureau, about 20,000 people replace artificial knee joints every year, of which more than 70% are women. The doctor reminded that the weight and utilization rate will affect the service life of the artificial knee joint. On the basis of artificial knee replacement, it is necessary to maintain normal activities. It is especially recommended that patients control their weight after operation and reduce cartilage wear.

Statistics from the Health Insurance Bureau show that women account for more than 70% of patients who have replaced artificial knee joints. Doctors advise patients to control their weight and reduce cartilage wear after operation. (Photo/Zhang) Statistics of 1998 to 100 Artificial Knee Joint released by Health Insurance Bureau. The total number of users is 50,546, and 59,386 groups have been replaced by * * *, of which most are women, accounting for 74.55%. From the statistics of all age groups, the replacement rate of 65-75 years old is the highest, accounting for 4 1.76%, 75-85 years old for 35. 14%, and 56-65 years old for 16.27%.

Jiang Hongsheng, an orthopedic surgeon at National Taiwan University Hospital, said that cartilage is the dominant factor in healthy joints and synovial fluid is the auxiliary factor. When the cartilage surface is not smooth or loses elasticity, the joint can't rotate smoothly, and it will also hurt when carrying weight. There are many reasons for cartilage wear, including age, overweight, rheumatoid arthritis, gout or severe trauma, especially many patients are overweight or even obese.

Clinically, the proportion of women replacing artificial knee joints is much higher than that of men. Dr. Jiang Hongsheng pointed out that there are two other factors that put women at a disadvantage: first, the natural material of male cartilage is better than that of women; Second, cartilage needs hormone moisturizing, and women lack hormone protection after menopause, which is another risk factor.

If the cartilage wear is light, the doctor may inject hyaluronic acid into the joint as a lubricant; If the situation is serious, such as cartilage thickness is only half of the original, it is recommended to carry out artificial knee replacement surgery. At present, the success rate of artificial knee replacement is over 99%, and it can be used for about 10 to 12 years.

Dr. Jiang Hongsheng said that in order to avoid reducing the service life of artificial knee joint, people should do a good job of maintenance after operation. First, they should remove the culprit that accelerates cartilage wear. For example, gout patients need to inhibit antibody activity to control uric acid and rheumatoid arthritis, so that synovial sac can make lubricating fluid normally; The most important thing to remind is that overweight people must control their weight within a reasonable range to reduce the wear and tear of knee cartilage.