Bones reflect what they encounter?

• A. Stresses
• B. Strains
• C. Loads
• D. Angles

Answer: (A)

Stresses are what bones reflect. When a bone is loaded, internal forces develop inside the tissue—these are the stresses. Bone remodels in response to that stress pattern, aligning its structure and increasing density where stress is greatest so it can carry those forces more efficiently. This idea is captured by Wolff’s law: bone adaptations follow the distribution and magnitude of mechanical stresses it experiences. Strains are the deformations caused by those stresses, not the signal the bone’s architecture follows. Loads create the stresses, and angles describe direction but don’t alone explain how bone structure changes. So the best answer is stresses.