The posterior cruciate ligament (PCL) is a tough fibrous band of tissue that works within the knee. Together with the anterior cruciate ligament (ACL), the two bands criss-cross each other inside the knee in order to provide stability. There is also the medial collateral ligament and the lateral collateral ligament which sit on the middle side of the knee and the outer-side of the knee,...

If your knee joint is severely injured or damaged by a disease like arthritis, a total knee replacement (also called knee arthroplasty) may be the answer for you. But how do you know if you're a candidate and if the time is right?