The man with a titanium chest
3 February 2017 Last updated at 10:26 GMT
For seven years, part of Edward Evans's sternum was missing - the bone would normally have protected his lungs and heart.
A single blow to his chest could have killed him.
Now Edward, from the Midlands, has become the first person in the UK to get a 3D-printed titanium replacement.
His story was featured on Trust Me I'm A Doctor on BBC Two - @BBCTrustMe on Twitter