Help a competitive breaststroke swimmer in the UK with knee replacement question

USMS received the following email from a breaststroke swimmer in the UK - please reply to her email directly if you have any information to share - thank you!

Hi, do you know of any members I could contact via email from my home in the UK who have had a knee replacement with a Conformis artificial joint and who can still swim breaststroke competitively. Many thanks, Cat Whiteaway whiteawaycat@gmail.com