I suffer from anterior knee pain. I've been examined by an NHS podiatrist who diagnosed underpronation due to high arches. I use orthoses to straighten up my legs, and I've got them in my trainers. But today after W1R2 my knee is so inflamed that I can't manage stairs. I will not give up but any help or advice would be appreciated.
EDIT: corrected the condition, it's underpronation (not overpronation)