Points Taken From: http://www.sportspodiatryinfo.co.uk/blog/?p=409
"...Most shoes are marketed with respect to how much ‘pronation control’ they offer. Why is this? Well, it has generally been thought that a more pronated foot type is a significant risk factor for injury. However the fact is that there are very few prospective studies which have actually shown this, with numerous studies actually concluding that there is no association between foot type and injury.
"...Two studies have even shown that a pronated foot is actually a protective factor against injury."
"...functioning in a pronated position does not mean that you will necessarily get injured. In fact the experimental evidence suggests you are much more likely to get injured from training errors or from dysfunctional hip musculature.
"...Verdict = Pronation is not consistently predictive of injury"
"...The word ‘normal’ is probably an inappropriate word to apply to the human body. As far as normal foot alignment or mechanics is concerned, the normal (average) foot type reported in sampled populations is actually mildly to moderately pronated. So why then is the main aim of the current running shoe selection model to align runners to ‘neutral’"
"...It still amazes me that in a world where human variation is so vast in almost every aspect of our being, that when it comes to running there is a suggestion that we should all be in one particular alignment or position. The reality is that each of us most likely has own preferred alignment – a subject specific ‘normal’."
"...Several different methods of assessing foot shape, arch height and foot posture in static standing have been investigated, with the conclusions generally being that there is no association between these measures and dynamic function (what the foot does when we actually run)."
"...Verdict = Foot shape is NOT predictive of dynamic function. The wet foot test is nonsense."
"...Verdict = There is very little research investigating the relationship between running shoes and injury prevention. Stiffer midsoles do reduce pronation speed and magnitude, but in doing so may increase vertical loading rates. Running shoe ‘cushioning’ may be a myth."
"...So where does this leave the runner choosing a pair of shoes in 2011? There are many choices. Neutral? Stability? Motion Control? Vibram Five Fingers? Barefoot? Hopefully by now you realise that there is no simple answer.
"...All decisions could and should be based on one main factor in my opinion: comfort.
"...Believe it or not comfort has been linked to injury frequency reduction and is thought to be the most important variable for sports shoes, and a focal point for any future sports shoe development.
"...We all know that comfort is subjective and subject specific so with that in mind only the wearer can confidently choose the most appropriate shoe for themselves."
"...As most runners know, it can often be a little bit of trial and error with regard to finding the ‘right’ shoe. Once you’ve found what works for you (or if you have found it already) then don’t change it."