I know it may seem an odd question!
I have major problems with my hips and knees. I am incredibly knock kneed on my right leg. To get my knee pointing straight, my foot almost points at a 45 degree angle.
Have had loads of physio to try help the knee pain but what has made the biggest difference is a pair of orthotics that changes the way I walk.
They were really expensive but they definitely work. I only have one pair and I put them in the waterproof shoes I walk the dog in. I haven't been running because I've been ill, but the physio did recommend I wear them in my running shoes too.
Do you just move them from shoe to shoe or do you have more than one pair?