Moulded foot-supports (ideally, custom-made) that fit in a shoe to make foot motion more efficient, reduce the risk of foot injuries, and to correct certain structural imbalances (e.g. flat feet and high arches), which may lead to pain in the back, hips, knees, lower legs, or feet. Soft orthoses provide extra cushioning for those with very inflexible feet (e.g. those with high arches). Rigid orthoses provide extra stability to those who have flat feet or who over-pronate. Many elite athletes, including runners, cyclists, and skiers, benefit from using orthoses during training and competition.
Subjects: Sports and Exercise Medicine.