Bone marrow fills the cavities in your bones and produces blood cells. Red blood cells carry oxygen, white blood cells fight germs, and platelets help blood clot. Bone marrow disorders include ...

The accessory navicular is an extra bone growth usually found on the inside part of the foot, near the navicular bone. It’s not part of a typical bone structure in humans, and therefore, not many ...

Osteoporosis is a bone disease that’s common in the United States, affecting almost 20 percent of women and 5 percent of men over age 50. Osteoporosis occurs when bones are weakened by hormone shifts ...