Why does chronic high-impact exercise lead to stress fractures in long bones such as the tibia, rather than uniform thickening?

💡 Explanation

Stress fractures arise from the piezoelectric effect, where mechanical stress generates electrical potentials that stimulate localized bone remodeling at micro-damage sites. This occurs because the increased stress isn't distributed evenly; therefore, remodeling is focused, rather than uniform, resulting in localized weakness and eventual fracture.

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