Over pronation accounts for 10% of running injuries but 70% of runners with lower limb running injuries will improve with orthotics or shoe inserts. It is suggested that orthotics do not alter the joint movement patterns but alter the function of the lower limb muscles during the stance phase of running. Orthotics help reduce the risk of injury by:

• Reducing lower limb muscle activation

• Improving running comfort

• Improving running economy (efficiency)