A cat that had its back feet severed by a combine harvester has been given two prosthetic limbs in a pioneering operation by a UK vet.

The new feet are custom-made implants that "peg" the ankle to the foot. They are bioengineered to mimic the way deer antler bone grows through the skin.

The operation - a world first - was carried out by Noel Fitzpatrick, a veterinary surgeon based in Surrey.

His work is explored in a BBC documentary called The Bionic Vet.

The prosthetic pegs, called intraosseous transcutaneous amputation prosthetics (Itaps) were developed by a team from University College London led by Professor Gordon Blunn, who is head of UCL's Centre for Biomedical Engineering.

Professor Blunn and his team have worked in partnership with Mr Fitzpatrick to develop these weight-bearing implants, combining engineering mechanics with biology.