EFFECT OF EXTRINSIC REARFOOT POSTS ON REARFOOT POSITION

Twenty runners displaying abnormal subtalar joint pronation were selec ted for this study, the purpose of which was to investigate the effect s of extrinsic rearfoot posted orthoses on frontal plane rearfoot and tibial position. Numerous temporal events were measured and compared f or three different conditions: acrylic post, Birko post, and no post. The results suggested that rearfoot posts have a somewhat limited func tion in foot orthotic therapy and that the choice of posting material is of limited functional value.