According to Wolff's Law, trabeculae form along which lines?

• A. Lines of stress
• B. Joint lines
• C. Growth lines
• D. Friction lines

Answer: (A)

Wolff's Law says bone adapts to the loads it experiences, remodeling to become stronger where stresses are greatest. In trabecular bone, the internal lattice reorganizes so that trabeculae run along the directions of principal stresses to best resist those forces, forming a lightweight but strong scaffold. This means the trabecular architecture mirrors the stress pattern the bone endures, rather than following joint lines, growth marks, or arbitrary friction paths.