trackhead wrote:
you probably won't like it, but...
"Other features of footwear, such as arch supports and orthotics, may interfere with shock-moderating behavior and probably hinder the shock-absorbing downward deflection of the medial arch on landing (Robbins and Hanna, 1987). These features reportedly reduce pronation and supination or offer the wearer lateral and arch support. They may help some people with foot pathologies, but their benefit is uncertain for runners with healthy feet (Yessis, 2000, p.121)."
Your foot's subtalar joint wants to move a set amount so that your toes, knees and hips all line up -- why would you limit it's range of motion?
When I read this the words that stand out are "MAY interfere" and "PROBABLY hinder". "They MAY help some people". To many if's no real answer.