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Mechanical modeling of the stress adaptation process in bone
Calcified Tissue International
|January 1, 1984
Summary
Bone adapts to mechanical stress by remodeling based on strain, not stress. Bone deposition or resorption depends on how actual strain deviates from the optimal remodeling range, influencing bone structure.
Area of Science:
- Biomechanics
- Cellular Biology
- Orthopedics
Background:
- Bone remodeling is a complex process influenced by mechanical loading.
- Understanding the relationship between mechanical forces and bone adaptation is crucial for treating bone diseases and injuries.
Purpose of the Study:
- To present a mechanical model for bone stress adaptation.
- To elucidate the role of strain and stress in bone remodeling.
Main Methods:
- Introduction of a control surface to monitor mechanical forces and fluid transport in whole bones.
- Relating mechanical forces to local tissue stresses and microcirculation.
- Applying concepts of strain, stress, and elasticity to biological tissues.
Main Results:
- Biological tissues, including bone, sense strain rather than stress.
- Bone remodeling occurs when actual strain deviates from the 'band of remodeling equilibrium strains'.
- Bone deposition or resorption is a function of this deviation, varying by anatomical site and strain history.
Conclusions:
- The developed mechanical models provide a framework for understanding internal (remodeling) and surface (modeling) bone remodeling.
- This model offers insights into the mechanisms underlying bone's adaptive response to mechanical environments.