What is the composition of cancellous bone?

The composition of cancellous bone, also known as spongy or trabecular bone, is characterized by a network of thin plates and struts. This structure creates numerous small spaces, which contributes to its lightweight nature while still maintaining strength. The configuration allows cancellous bone to provide support and flexibility without being as dense as compact bone, which is solid and tightly packed.

Cancellous bone is found mainly at the ends of long bones, within the interior of others, and in areas such as the vertebrae. The porosity of cancellous bone also plays a crucial role in the bone’s ability to house bone marrow, contributing to blood cell production. The unique structure of thin plates with spaces contrasts sharply with the dense, solid nature of compact bone, highlighting the functional differences between these two types of bone tissue.