What are the classifications that apply to the heel?

• A. Appendicular and axial
• B. Peripheral and chiefly cortical
• C. Predominantly trabecular and weight bearing
• D. All of the above

Answer: (C)

The heel is primarily classified as predominantly trabecular and weight-bearing. This classification pertains to the composition and functional role of the heel bone, specifically the calcaneus. The majority of the heel is made up of trabecular bone, which has a spongy structure that provides greater surface area for mineral exchange and helps in shock absorption. Additionally, the heel plays a significant role in locomotion and weight distribution, making it a crucial weight-bearing structure in the foot.

Choosing this classification highlights the importance of trabecular bone in providing strength and support during weight-bearing activities, as well as its role in the overall biomechanics of the foot. The focus on the heel's trabecular nature is particularly relevant in discussions surrounding bone density measurements and the assessment of osteoporosis risk, where trabecular bone is often a key concern due to its susceptibility to fracture under load.

While the other classifications may hold some relevance in certain contexts, they do not capture the primary characteristics that define the heel's structure and function as accurately as the selected answer.