When our foot hits the ground we experience shock. Our foot then pronates in order to protect against the repetitive shocks that we experience. Pronation literally allows us to control the shock we experience.
Occasionally I get clients talking about pronation being a negative thing. This is often that case after they have had a sales person selling them a higher priced trainer for 'pronation'.
Pronation isn't a bad thing guys. Granted, if you are unable to re-supinate at the right time then we may need a more supportive shoe or insole.
But if that's the case I would advise that you get the rest of your biomechanics checked out first. For example, if your pelvis is not moving freely then the movement has to come from somewhere else, and it may just mean that in your case it's your foot and ankle that compensate.
Don't just settle for a knee down assessment. The body is linked in such a way that it may even be your shoulders that are causing the compensation down at your feet. So if you only get your feet and knees checked out you may be missing so much more that is going on. You may even miss the cause of the issue!!
Just a thought before you spend all that money on 'corrective' footwear.