How Does Perichondrium Become Periosteum?

As the cartilage grows, capillaries penetrate it. This penetration initiates the transformation of the perichondrium into the bone-producing periosteum. Here, the osteoblasts form a periosteal collar of compact bone around the cartilage of the diaphysis.

How is periosteum formed?

Following an injury such as a fracture, the periosteal vessels bleed around the traumatized area, and a clot forms around the fragments of bone. Within two days the osteoblasts multiply, and the cambium expands to become many cell layers thick.

Is perichondrium same as periosteum?

What is the difference between the perichondrium and the periosteum? The perichondrium is a dense layer of fibrous connective tissue that covers many types of cartilage in the body, whereas the periosteum is a thin layer of membranous connective tissue that covers all bones in the body.