Harry was fresh from working at the Metal Box Company when he was appointed by John Charnley in the late 1950s.
He began his new career making hip prostheses from the attic of Charnley's home. His full duites later involved making cups and finishing femoral prostheses, making surgical instrument prototypes, and building test equipment and testing artificial materials.
A longer version of this interview can be seen at Wrightington Hospital in Hip Histories. The exhibition is set in Sir John Charnley's biomechanics laboratory and tells the story of his pioneering work in orthopaedic surgery.
Harry Craven was interviewed by Dr Francis Neary.
I was designing a spherical grinder because Sir John wanted a perfect sphere for the prosthesis.
There was no money and no materials or anything to make the thing with so I used to go to a scrap yard up the road and see what they had got.