Hey TD
Like Joddly just caught this now
I am in for an arthroscopy in about 2 weeks time, with a bit of a trim as needed - my meniscal damage does not sound as bad as yours,
However I am biking consistenty at the moment, I only get issues biking if I am out the saddle and hoofing it up hill, (kind of a running position actually). I have been nursing the increasing pain following long / hard runs over the last 18 months, and yoga has become a definite no no
For IM most of the work / training is in biking, In a big week, I do 12-14 hrs biking to 6 hrs running, (not for the last 3 months
) Most of the running is reletively low intensity, (ie hr 145). The idea is that you cannot smash a IM marathon as you are already buggered from the bike......
Hope that give you hope that there is still stuff you can do that will give you a buzz......