In a bone marrow biopsy, a doctor collects a sample of bone marrow to see if the tissue and blood cell production are healthy. A bone marrow test can help diagnose anemia, clotting disorders, and some ...

Spinal fusion is a surgical procedure in which two or more vertebrae are permanently joined into one solid bone with no space between them. Vertebrae are the small, interlocking bones of the spine. In ...

There are two types of marrow: red and yellow. Red marrow is mainly found in your flat bones such as your hip and vertebrae. As you age, more of your marrow becomes yellow due to an increase in fat ...