Connective Tissue: Cartilage

The nasal septum, the tip of the nose, the trachea and the ends of long bones are made of hyaline cartilage.
To repair the nasal septum, the same type of cartilage, hyaline cartilage, is preferred, because it has the right firmness and flexibility.
Elastic cartilage is found in the pinna and epiglottis, and fibrous cartilage in intervertebral discs.
So hyaline cartilage is preferred.

The matrix of cartilage contains proteoglycans whose polysaccharide part is chondroitin sulphate (a glycosaminoglycan), together with collagen fibres. The matrix protein is called chondrin.
Ossein is the protein of bone, and casein is the protein of milk.
So the polysaccharide of cartilage proteoglycan is chondroitin.