ThePigSite Quick Disease Guide
Inherited Thick Legs, Hyperostosis
This is a very rare condition of newborn piglets which is thought to be inherited. Individual litters are born with boney thickening of the legs, most notably the front legs. The pigs can not walk properly and usually fail to thrive. If such a condition arises check that the boar has not thrown other similar litters and do not mate the sow with the same boar again.