Have ever heard of Knee joint replacement or knee replacement but, don't know what is it exactly? Well, in this article we will be discussing on this topic only that what is knee joint replacement which is also called as knee arthroplasty. Knee Joint Replacement When a knee is severely damaged by disease or injury then, artificial knee joint replacement may be considered. During a knee replacement surgery the joint surface is replaced with artificial body parts or prosthesis. Knee joint replacement is generally recommended to old age persons who are not able to walk properly or always have complaint of knee paining. Knee joint replacement is also called as Knee Arthroplasty. Arthroplasty means the reconstruction or replacement of a joint. When the articular cartilage of the knee becomes damaged or worn then it becomes painful. The knee becomes hard to move and instead of sliding over each other the bones rub and crush together that makes it more painful. W