Cancellous bone is also known as what type of bone?

• A. Cortical Bone
• B. Trabecular Bone
• C. Compact Bone
• D. Skeletal Bone

Answer: (B)

Cancellous bone is commonly referred to as trabecular bone. This type of bone is characterized by a porous, honeycomb-like structure, which is distinct from the denser cortical bone. Trabecular bone is found primarily at the ends of long bones, within the interior of the vertebrae, and in the pelvis, and it plays a crucial role in providing structural support and maintaining the overall strength of the skeletal system while also housing bone marrow.

The term "cancellous" comes from the Latin word for "lattice," which aptly describes its intricate network of bone struts and plates. This network is highly effective at distributing loads and facilitating the exchange of nutrients and waste between bone and marrow. The dynamic nature of trabecular bone makes it especially important in processes like bone remodeling, where it adapts to the mechanical stress placed upon it.

Understanding this distinction is essential when discussing bone density and health, as changes in trabecular bone are often early indicators of osteoporosis and other metabolic bone diseases. Thus, recognizing that cancellous bone is synonymous with trabecular bone is key to grasping concepts in bone densitometry and overall bone health.