has part has part characteristic of inheres in has modifier Costal cartilage calcification HP:0006662 UMLS:C1855608 Cartilaginous ossification of rib HP:0006646 Calcification of the costal cartilages, which are bars of hyaline cartilage found at the anterior ends of the ribs which serve to prolong the ribs forward and contribute to the elasticity of the walls of the thorax. Abnormal rib ossification Calcification of cartilage abnormal calcified costal cartilage