John Charnley, British orthopedic surgeon (died 1982)

Sir John Charnley, was an English orthopaedic surgeon. He pioneered the hip replacement operation, which is now one of the most common operations both in the UK and elsewhere in the world, and created the "Wrightington centre for hip surgery". He also demonstrated the fundamental importance of bony compression in operations to arthrodese (fuse) joints, in particular the knee, ankle and shoulder.