I am considering some lightweight boots combined with Sorbothane insoles and keeping mileages down in future to more ameanable distances. I have no definite plans yet for further walking. As I write, only the day after, the knee is much better, but painful feet still persist.
Back in 2014 the knee surgeon suggested me having my "other" knee done which I eventually agreed to but backed out at the last minute. Apart from many many day walks since then I have walked:
March Marilyns with caravan from Ledbury - five days
June Witches walk - over several days walks with BowlandClimber
July SW Coast - Land’s End to Exmouth, 10 days
September Torridon, caravan - 5 Marilyns