The_Invention_of_Surgery

in America every year. This number pales in comparison to the half-
million hip replacements and roughly one million knee replacements
performed every year in the United States.
Joint replacement arthroplasty is the most commonly performed
implant operation in the world. It is not only pain-relieving, it
dramatically improves function and the ability to work and play. It is one
of mankind’s greatest innovations, and the credit for discovering the
combination of the right metals, plastics, and cement goes to John
Charnley, an industrialist working with his own hands in an otherwise
unremarkable countryside hospital.