Image Credit: AMC. Just as a carbonated beverage is referred to as soda in some areas of the U.S. and pop in others, the scattered and isolated survivors of The Walking Dead zombie apocalypse have different names for wandering corpses.
Underpronation. Underpronation is a term often used by runners, joggers and sports enthusiasts to describe the gait cycle when there is a lack of pronation. Pronation is the natural rolling motion of the foot as it moves from the heel to the toe, and it is important for shock absorption and proper weight distribution.nderpronation can be caused by structural abnormalities in the feet or when previous injuries to the feet have damaged the tendons and muscles, or when there is muscle imbalance or a particularly tight Achilles tendon.
Overpronation causes excessive internal rotation of the lower leg and knee and can affect the alignment of entire lower body. Overpronation places extra strain on the lower body and can cause foot pain (pain in arches, heels and ankles), knee pain, leg pain, and lower back pain. Overpronation can cause or contribute to poor knee tracking and knee pain. The kneecap slides over a groove on the thighbone as your knee bends and straightens. When the kneecap is pulled to the left or right of the groove while walking or running, it causes friction and knee pain on the underside of the kneecap.