What is cartilage Appositional growth?

Appositional growth occurs when chondroblasts secrete new matrix along existing surfaces and this causes the cartilage to expand and widen. In interstitial growth, chondrocytes secrete new matrix within the cartilage and this causes it to grow in length.

Does cartilage undergo Appositional growth?

In endochondral ossification, bone develops by replacing hyaline cartilage. Activity in the epiphyseal plate enables bones to grow in length (this is interstitial growth). Appositional growth allows bones to grow in diameter. Remodeling occurs as bone is resorbed and replaced by new bone.

Does cartilage grow Interstitially?

Cartilage can grow in two ways: Interstitial growth – chondrocytes grow and divide and lay down more matrix inside the existing cartilage. This mainly happens during childhood and adolescence.

What are the two mechanisms of cartilage growth?

Two distinct mechanisms of tissue growth have been recognized: appositional growth, or growth at a tissue surface, and interstitial growth, or growth within tissue volume (12).

How does Appositional growth occur?

Appositional growth is the second type of growth which increases the bone width or diameter. This growth occurs as a result of depositing new bone tissue on the endosteal and periosteal surfaces. Therefore, new layers are formed on the surface of pre-existing bones, increasing the thickness of the bone.

What is responsible for 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. Bone repair occurs in four stages and can take several months.

How does bone grow and develop interstitial vs Appositional growth?

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.

What is Appositional growth and where does it occur?

What does Appositional growth produce?

During appositional growth, osteoclasts resorb old bone that lines the medullary cavity, while osteoblasts, via intramembranous ossification, produce new bone tissue beneath the periosteum. Mesenchymal stem cell migration and differentiation are two important physiological processes in bone formation.