For patients with medial knee osteoarthritis, lateral wedge insoles do not reduce knee pain, according to a new study published in the Journal of the American Medical Association.

Flat feet is also know as pes planus, adult acquired flat foot deformity, progressive flat foot deformity, posterior tibial tendon dysfunction (PTTD), flat foot, splay foot, fallen arches (loss of medial longitudinal arch of foot).

A simple wet test can tell you if you have flat or high arches, and how to choose your running shoes accordingly.