Whoa boys! Paul you have done fantabulously with or without your medical ailments (but you're even more of an inspiration because of them - go you!). Anyone who runs/walks or crawls using their own man-power to go any distance in any time is always a winner. We get enough stick from those who don't/won't run "I could do better but I can't run because I have a bad knee, hip, shin, hair cut", without turning on each other. C'mon, feel the love please.....
BFLee: I have a 3-in-1 roller, beat that, hah! It's a big tube with three sections; big foam roller which is ideal glutes, IT etc, then the middle one slots out which is again foam but the surface is concertinered, for calves and shins, then the inner is the stick, hard plastic (looks like a truncheon) with "wheels" round the centre so it glides around easily. Also for backs of calves, shins or anywhere I want to get in nice and deep (the end is good for the psoas too). Got it from Argos, £19.99