Sternum
The sternum (breastbone) forms the ventral floor of the thorax. In the horse it consists of the manubrium, body (composed of six fused sternebrae), and the xiphoid process. It articulates with the costal cartilages of ribs 1 through 8. The manubrium projects cranially as the cariniform cartilage. The xiphoid process extends caudally and gives attachment to the linea alba and diaphragm. It anchors the ribs and provides attachment for pectoral and sternal muscles.
Sternal fractures can occur from trauma and may be associated with internal injury. Relevant as a landmark for thoracic surgery and imaging. Isolated clinical problems are uncommon.
Chest trauma with swelling or difficulty breathing should be evaluated promptly.
Sternal fractures can occur from trauma and may be associated with internal injury. Relevant as a landmark for thoracic surgery and imaging. Isolated clinical problems are uncommon.
Chest trauma with swelling or difficulty breathing should be evaluated promptly.
See the Sternum on our interactive 3D horse model. Open 3D Model