Question

why is bone tissue organized differently (cortical versus trabecular bone)?

Answer 1

Cortical bone is denser with less porosity, ranging from 5% to 10%. Its structure goes well with its function. Cortical bone is found primarily in shaft of long bones and forms outer shell around cancellous bone, which is at the end of vertebrae. In contrast, trabecular bone is more porous. As it is found at the end of long bone, vertebrae, and in flat bones like pelvis, porosity is more. So, trabeculae have porosity of 50% to 90%. More the porosity, more is the flexibility.

Hence, there exists difference between trabeculae and cortical one structure in terms of porosity and unit structure.