what does the cancellous bone protect
Cancellous Bone. Cancellous bone is a spongy type of bone inside the cortical bone. Itâs not as dense as the outer cortical bone. Some bones have a lot of it, and some bones have less.A broken bone may heal faster if it has more cancellous bone inside.our bone marrow is deep inside your bones â inside the middle of the cortical and spongy bones. Itâs job is to make all the blood cells inside your body â red cells, white (infection-fighting) cells, and platelets that help you stop bleeding when you get a cut.