An interesting read
http://well.blogs.nytimes.com/2010/07/21/phys-ed-do-certain-types-of-sneakers-prevent-injuries/
all these years, I had been giving my patients advice regarding shoes for their specific foot type:
flat feet = requires "motion control" supportive shoes
neutral arches = require neutral stability shoes
High arched feet = require soft well cushioned shoes
This advice - (which was taught to me at uni) is now proved to be a MYTH!
however I must say, customised orthotics do help the majority of my patients with pronated feet so i'm still going to recommend them, but as for shoes and footware, thats going to be a different matter from now on.