Therefore, it has an enhanced structure for weight-bearing. Lumbar vertebrae are larger than bodies of other regions of the spine. Cancellous bone is made of a network of tree-like branches of tabeculae with marrow spaces, containing hematopoietic cells and fat. The cellular components consist of lining cells, osteoblasts, osteoclasts, and osteocytes. Trabeculae are orientated and interconnected to resist compressive load.
Cancellous bone contains water as well.
It is well known that mechanical properties of bone are affected by their water content. However, the effect of fat has not been widely documented. Measure the water and fat content in the vertebral body of the rat. From compression testing of the vertebral body, calculate the maximum load, compressive strength, elastic modulus, and energy. Compare and analyze the what role water and fat have on these mechanical properties and why any differences occur.