<P> During fracture healing, cartilage is often formed and is called callus . This cartilage ultimately develops into new bone tissue through the process of endochondral ossification . </P> <Ul> <Li> <P> Masson Goldner trichrome stain of growth plate in a rabbit tibia . </P> </Li> <Li> <P> Section of fetal bone of cat . ir . Irruption of the subperiosteal tissue . p . Fibrous layer of the periosteum . o . Layer of osteoblasts . im . Subperiosteal bony deposit . (From Quain's "Anatomy," E.A. Schäfer .) </P> </Li> </Ul> <Li> <P> Masson Goldner trichrome stain of growth plate in a rabbit tibia . </P> </Li> <P> Masson Goldner trichrome stain of growth plate in a rabbit tibia . </P>

Where do interstitial and appositional growth of cartilage occur