Just wanted to update my crank issue.

I had 165's put on my mtb and it was a godsend for me. I was able to ride my bike earlier post-op than I would have with the 175's. In fact, I rode my mtb so much 6 weeks post op that my OS told me to back off for awhile. I still have the shorter cranks on it even though I can comfortably ride the 172.5 on my Fargo and Pistola. With the taller cranks however, I do have to pedal with my heel centered over the spindle for the first dozen strokes or so until my knee loosens up.