10 yrs bad knees. Total knee replacements 2 yrs apart. Ran 2 triathlon sprints but mostly ran/walked 3.1 run portion due to recovering from knees.3rd yr running 40+ min on treadmill in prep of 3rd Triathaon. Tore postibular tendon had surgery. Unknown was damage done to cartiledge. When heel misaligned. pain walking standing.4 yrs later bulky ankle braces not helping. Had ankle fusion December 2016. Recovery long. No pain after 2 weeks but frickin cast drove me nuts. 9 months later plantar facitis both feet bad. Ankle pain makes standing alot of walking and pain bad. I suspect if Plantar F was not active I would be significantly better. I have electric assist bike which I love as I can now ride 2 hrs 30 + miles without pain. I do not limp.