50 years of hip surgery

Exactly 50 years ago, a British surgeon called John Charnley developed a technique that revolutionised hip replacement operations.

Later he was knighted for his efforts - and the work of the man now known as Sir John Charnley has since become the standard procedure.

It is an operation that has been carried out on patients across the world.

And it all started half a century ago in a small hospital in Lancashire.

http://www.bbc.co.uk/news/health-20453892