Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The knee replacement surgery is the replacement procedure of certain knee joint's problematic surfaces which cause pain and disability to patients, caused by the arthritis, osteoarthritis and other destructive diseases of the knee joints. Pioneered by scientist Leslie Gordon Percival Shiers, who refused to patent his invention in 1950s, in order to allow other surgeons to improve upon his idea, the first knee replacement procedure took place successfully in 1970s. Nowadays, along with 4.5 million Americans who have passed through a knee replacement procedure, more and more aged people, as well as an alarmingly increasing number of younger people request for this type of joint surgeries. Learn more about the knee replacement, its history and techniques in this book.