OBJECTIVE, We describe the CT and sonographic appearance of 15 costal carti
lage fractures observed in eight patients
CONCLUSION. On CT, fracture was seen as a low-density area through the cost
al cartilage, with surrounding calcifications present near old fractures, a
nd gas density within the cleft in some cases. On sonography, cartilage fra
cture appeared as an interruption of the smooth anterior aspect of the cart
ilage.