RayK wrote:You do know though If you keep on doing all of these big days you will kill your knees as well
That thought often crosses my mind yes
So far I'm ok (56 and counting, age that is), I've not had knee trouble since I was 28, doing mad marathon training, but I certainly feel the strain especially downhill! My weakness these days is the calves and achilles, where something tends to go pop if I attempt serious running training, but fortunately not walkiing on the hills - yet! I would not have the confidence to go up alone, unless I can jog 10k without issue.
All the best in your rehab, and sometimes I think who really needs the Scottish hills when we have the English lakes!?