The instant invention relates to the use of 24-hydroxylated vitamin D compounds as therapeutics in mammalian bone fracture repair. In addition, the instant invention relates to novel 24-hydroxylated vitamin D compound receptors which can be employed in the development of compounds capable of facilitating fracture repair in animals. The instant invention also relates to nucleic acids encoding such receptors as well as vectors, host cells, transgenic animals comprising such nucleic acids and screening assays employing such receptors.