Knee Replacement Surgery

When a knee is severely damaged or injured, an artificial knee replacement may be considered. During the knee replacement surgery, joint surfaces in the knee are substituted or replaced by prostheses. Nearly 600,000 knee replacement surgeries are done each year in the U.S. The most common age for knee replacement is between 50 and 80 years old and the most common reason for knee replacement is osteoarthritis.

What Happens During Knee Replacement Surgery?

Prior to surgery, your doctor will completely evaluate your medical history and perform a thorough physical exam in order to ensure that you are are in good health for the surgery. Once you are cleared for surgery, the procedure to replace the knee will take about 2 hours to complete. After the damaged bone and cartilage of the knee is removed, the orthopedic surgeon will place the new artificial knee in its place.

The most common type of knee prostheses used in replacement surgery is cemented prosthesis. A knee prosthesis is made up of metal with ceramic or plastic and is attached to the bone with a type of epoxy (a special adhesive).

After Knee Replacement Surgery

Knee replacement surgeries usually require an in-hospital stay for several days. Even while in the hospital, the patient usually begins physical therapy exercises in order to regain range of motion in the knee. Pain medicine will also be given to keep the patient comfortable.