Buck knees cause unstableness. When accompanied by long toes, they tend to cause stumbling. Knock knees predispose to interfering. Bow knees usually cause undue weight on the outside of the front feet, which tends to hasten sidebones. Sickle hocks seldom accompany balanced conformation and motion.
Post legs are less common than sickle hocks but are equally serious.
They seldom ride easy, are prone to crampy, boggy hocks and tend to cause low, skimming strides. Straight underpinning does not guarantee a good performing horse, but it increases the probability of good performance. Copyright 1999 University of Missouri. Published by University Extension , University of Missouri-Columbia. Ronald J. Turner, Director, Cooperative Extension Service, University of Missouri and Lincoln University, Columbia, Missouri 65211.