Costal cartilages

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These are hyaline cartilage[1] and connect the upper 7 ribs to the sternum and the 8th-10th ribs to the rib above. The 11th and 12th costal cartilages are buried in the muscles of the abdominal wall.

They may become calcified in old age with some loss of flexibility.

Inflammation of the cartilages (costochondritis or Tietze's syndrome) is a cause of chest pain.

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