I think I have this problem. Self-diagnosed, but I’ve never wrongly self-diagnosed since I became convinced I had breast cancer as an adolescent boy.
I have the risk factors of fairly high arches, bony heels, and walking (landing) on the outside of my heel.
I’m not sure this was caused by my cycling, because I have street shoes that appear to be problematic, i.e. with high and stiff heel counters and tabs.
However, I’ve also had months of problems with my calves/Achilles tendons/heels caused mainly, I think, by a slipping seatpost. I cycle with a fairly low heel at the best of times, and when the saddle slips down farther, the Achilles tendon has to stretch in a curve while under pressure from the heel counter – probably not ideal.
I’m going to try changing my street shoes, stretching the calves and tendons daily, and replacing my cycling shoes. Anything else I should consider?
Are any cycling shoes known to have medically sensible heel counters?