costal cartilage n.
The cartilage forming the anterior continuation of a rib.
The first costal cartilage is vertical; the following ones are progressively more oblique in a direction downwards and forwards.
This bend occurs at the point of articulation of the second costal cartilage.
After fractures of costal cartilage or of the cartilages of the larynx the cicatricial tissue may be ultimately replaced by bone.