The Duke of Edinburgh is an active man, who has enjoyed good health well into his later years.
But as his age advanced beyond 90, concerns for his well-being have increased after he faced a number of scares.
Abdominal surgery, bladder infections, a blocked coronary artery and a hip replacement have seen him admitted to hospital on a number of occasions.
Despite having to spend two months convalescing following an operation on his abdomen, the duke appeared sprightly and walked unaided on an official visit to a care home in October 2013 when, at 92, he was older than many of the residents.
The active life and good health of 99-year-old Philip
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The active life and good health of 99-year-old Philip
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