Starting off again...
Lets start with the sternum. This dagger shaped breast bone is the most commonly fractured bone in the body - because of heart surgery. We as cardiac surgeons break and fix more bone than most other bone handling surgeons including orthopods. The sternum is a cancellous bone which means it is thin and has a hollow interior with marrow in it. It is also spongy or trabecular bone. It is very porous and contains red bone marrow, where blood cells are made. It is weaker and easie