1. After artificial knee replacement, patients can basically return to their normal daily life, such as taking short walks (less than 30 minutes), slow dancing, cycling, swimming in a warm pool or soaking in a hot spring, etc. However, it is worth noting that although patients can also climb mountains after surgery, climbing accelerates joint wear, and the more severe the joint wear, the shorter the life span of the artificial knee will be. Therefore, after the artificial knee replacement, patients should try to climb as little as possible. 2. Patients should try to avoid going up and down stairs after artificial knee arthroplasty. If you need to go up and down stairs for irresistible reasons such as floor, in the early post-operative period, patients need to try to use the healthy leg to bear the force, and gradually transition from non-weight bearing to partial weight bearing on the affected leg. In the early stage, the principle of going up and down the stairs on the healthy side first and the affected side first should be followed. After the patient has adapted and no longer feels pain, he/she can go up and down the stairs normally. 3, after the artificial knee replacement, patients need to prevent trauma, especially falls. This is because if the patient has a serious fall, a joint deformity, such as a twisted calf, or a fracture, it can easily lead to joint loosening. This is the time to seek medical attention, go to the hospital for x-rays, and even consider revision surgery. However, if the patient is able to resume walking after the fall, it is generally not a big deal. 4, because after the artificial knee surgery, patients are not able to do thighs against calves such a degree of bending, therefore, it is recommended that post-operative patients use the toilet, not recommended to use squatting stool. 5. For patients who are heavier, the pressure on the knee joint is too great, which will affect the service life of the artificial knee joint, so they need to lose weight when they recover three months after surgery. During the weight loss process, do not reduce your activities because you are worried about the bearing capacity of the artificial knee joint; normal rehabilitation training still needs to be performed as scheduled. It is generally recommended that patients lose weight until their BMI is less than 28. 6. For patients who want to become pregnant after artificial knee replacement, the conditions for a normal delivery are not related to whether or not they receive knee replacement surgery, even for patients who need knee replacement because of rheumatoid arthritis. There is no pressure on the knee joint during pregnancy, so whether or not you can have a normal delivery is mainly based on the advice of the obstetrician and gynecologist, and there is no need to be concerned about the surgery.