Total or partial knee replacement or total knee arthroplasty is a surgical procedure to replace the worn-out weight-bearing portion of the knee joint with parts made of metal and plastic. The goal of knee replacement is to relieve pain and restore mobility.
Osteoarthritis is the most common reason for knee replacement. Over time, the cartilage that exists between the bones in the knee joint wears down or becomes damaged.
During the procedure, the surgeon makes an incision in the front of the knee and moves the kneecap to the side. They will then cut away the damage to the ends of the thigh bone and shin bone. The synthetic replacement parts are fitted over the ends of both bones to create the new knee joint.
When considered medically necessary, knee replacement surgery is covered by health insurance and Medicare.
In most cases, you’ll be able to walk without the assistance of crutches about six weeks after your surgery.
Although rare, complications can include infection, blood clots and nerve damage. Some people have experienced a “stiff” knee joint after surgery.