Editing Foot (section)

===Underpronation (supination)===
[[File:Underpronation.jpg|thumb|Underpronation of foot]]

An individual who underpronates also initially strikes the ground on the lateral side of the heel. As the individual transfers weight from the heel to the metatarsus, the foot will not roll far enough in a medial direction. The weight is distributed unevenly across the metatarsus, with excessive weight borne on the [[fifth metatarsal]], toward the lateral side of the foot. In this stage of the gait, the knee will generally, but not always, track laterally of the [[Toe#Hallux|hallux]].

Like an overpronator, an underpronator does not absorb shock efficiently, but for the opposite reason. The underpronated foot is like a diving board that, instead of failing to spring someone in the air because it is too flimsy, fails to do so because it is too rigid. There is virtually no give. An underpronator's arches or ankles do not experience much motion as they cycle through the gait. An individual whose bone structure involves [[internal rotation]] at the hip, knee, or ankle will be more likely to underpronate than one whose bone structure has external rotation or central alignment. Usually – but not always – those who are [[bow-legged]] tend to underpronate.{{Citation needed|reason=some sources say instead that those who are bow-legged tend to overpronate|date=November 2013}} An individual who underpronates tends to wear down their running shoes on the lateral (outside) side of the shoe toward the rear of the shoe in the heel area.<ref>{{cite web |url=https://runnersworld.com/gear/a20797596/learn-what-supinating-your-foot-means/ |work=Runner's World |date=21 September 2001 |title=Supination, Explained |access-date=28 December 2012 |url-status=live |archive-url=https://web.archive.org/web/20130917160412/http://www.runnersworld.com/running-shoes/supination-explained?page=single |archive-date=17 September 2013}}</ref>