The maximum efficiency requirements in poultry include management, health, nutrition and environment. However, the interaction of these factors is not always met, generating malfunctions in the metabolism, physiology and anatomy. The incidence of leg weakness in rapidly growing birds has become a major concern in the poultry sector, not only due to poor performance and condemnation in processing plants, but also to compromised animal welfare. This article aims at reviewing the main nutrition-based diseases affecting the locomotor system of broiler chickens.