Cartilage growth occurs through two different processes: interstitial growth and appositional growth. Interstitial growth occurs within the cartilage through mitotic division of the existing chondrocytes. ... In appositional growth, new cartilage is laid down at the surface of the perichondrium.

What type of growth is appositional growth?

Appositional growth is the increase in the diameter of bones by the addition of bone tissue at the surface of bones. Bone remodeling involves the processes of bone deposition by osteoblasts and bone resorption by osteoclasts.

What is the difference between interstitial and appositional growth of cartilage?

Interstitial growth is the increase in the length of bones by the cartilage lengthening and is replacing by bone tissue while appositional growth is the increase in the diameter of bones by the addition of bony tissue at the surface of the pre-existing bone.