periosteum
/ˌpɛriˈɑstiəm/
noun
- A dense layer of tissue that covers the surface of bones, except at the joints, and contains blood vessels and nerves.
- Doctors sometimes graft periosteum to help heal severe bone injuries.
- The periosteum is essential for bone growth and repair after a fracture.
- When the periosteum is damaged, it can cause significant pain.