There is a wide variety of joint prostheses available and, what to do when you can’t pick one out like you would at the grocery store? Joint prosthesis to be put into the body to replace their original joints, therefore, there are three factors affect your choice! 1, the price of the prosthesis, this is determined by the individual’s economic strength, in general, the imported prosthesis price is high, good quality, more durable, spend a high price will buy good goods. But also depends on the right for you not, if the older, poor health, estimated life will not be too long, there is no need to change the joints too good, more money do not care about it did not do not consider the price. 2, the service life of the prosthesis, hip joint prosthesis, for example, the joint activity surface basically has several components, metal, polyethylene, ceramic. Between them because you have to activity, almost every day in the wear and tear, if the grinding is gone, the prosthesis will be scrapped, need to be replaced. Therefore, the young, more activities, you have to change the ceramic wear-resistant, the price is high, on the contrary, the older activities less, you can change the metal polyethylene, relatively cheap. 3, other, such as bone and prosthesis is adaptable, whether the use of bone cement, whether it contains antibiotics, whether the formation of pseudotumor, if you do not want to become a professional, do not consider. The doctor will make a choice for you according to your situation.