There are many different causes of knee pain such as injury, arthritis and infection. Some knee pain treatments require rehabilitation and in some cases surgery is required. In knee replacement surgery, a resurfacing of the parts of the bones that rub together is performed using metal and plastic implants. In this process, the damaged portion of bone is removed and replaced with implants. The surface of the femur is replaced with an identical rounded metal component.

There are many different causes of knee pain such as injury, arthritis and infection. Some knee pain treatments require rehabilitation and in some cases surgery is required. In knee replacement surgery, a resurfacing of the parts of the bones that rub together is performed using metal and plastic implants. In this process, the damaged portion of bone is removed and replaced with implants. The surface of the femur is replaced with an identical rounded metal component.

Original article and pictures take https://dmards.org site