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.
Sternal fractures are uncommon but can occur from direct trauma or falls. The ventral thorax is palpable in thin horses. The xiphoid region is a landmark for diaphragmatic attachment and abdominal surgery approaches.
Sternal fractures are uncommon but can occur from direct trauma or falls. The ventral thorax is palpable in thin horses. The xiphoid region is a landmark for diaphragmatic attachment and abdominal surgery approaches.
See the Sternum on our interactive 3D horse model. Open 3D Model