Which statement best captures Wolff's Law?

Which statement best captures Wolff's Law?

• A. Bone is alive and grows in response to stress.
• B. Soft tissue adapts to nerve signals.
• C. Joints function independently of loading.
• D. Calcium deposits in bone due to hormones.

Answer: (A)

Wolff's Law describes how bone responds to mechanical load. Bone is living tissue that remodels in response to stresses. When the skeleton experiences increased loading, strain is sensed by osteocytes and signals trigger targeted bone formation by osteoblasts, increasing density and thickness where needed. Conversely, reduced loading leads to resorption, and bone mass decreases. The remodeling also aligns trabeculae and reinforces cortical bone along the lines of force, making the structure better able to withstand habitual stresses. This is why activities that load bone, like walking or resistance training, strengthen bone, while immobilization or microgravity cause bone loss. The statement that bone actively changes in response to stress captures this dynamic best. The other statements describe soft tissue responses, joints functioning independent of load, or hormonal calcification, which do not reflect the adaptive remodeling principle described by Wolff's Law.

Wolff's Law describes how bone responds to mechanical load. Bone is living tissue that remodels in response to stresses. When the skeleton experiences increased loading, strain is sensed by osteocytes and signals trigger targeted bone formation by osteoblasts, increasing density and thickness where needed. Conversely, reduced loading leads to resorption, and bone mass decreases. The remodeling also aligns trabeculae and reinforces cortical bone along the lines of force, making the structure better able to withstand habitual stresses. This is why activities that load bone, like walking or resistance training, strengthen bone, while immobilization or microgravity cause bone loss. The statement that bone actively changes in response to stress captures this dynamic best. The other statements describe soft tissue responses, joints functioning independent of load, or hormonal calcification, which do not reflect the adaptive remodeling principle described by Wolff's Law.