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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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Related Experiment Video

Updated: Mar 25, 2026

Culturing and Measuring Fetal and Newborn Murine Long Bones
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Mechanical and metabolic interactions in cortical bone development.

Courtney D Eleazer1, Rimantas Jankauskas2

  • 1Department of Biological Sciences, Florida International University, 11200 SW 8th Street, Miami, FL, 33199.

American Journal of Physical Anthropology
|February 27, 2016
PubMed
Summary

This study shows that the skeleton compensates for metabolic bone loss by adjusting bone structure, particularly in ribs, to maintain strength under mechanical load. These findings are crucial for interpreting past human behavior from skeletal remains.

Keywords:
biocultural stresschildhoodcross-sectionshistologyintraskeletal variation

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Area of Science:

  • Paleoanthropology
  • Skeletal Biology
  • Bioarchaeology

Background:

  • Cortical bone structure reflects both habitual activities and metabolic health in past populations.
  • Mechanical loading and metabolic processes interact to shape bone, but their combined effects are not fully understood.
  • Interpreting skeletal evidence for physical activity or metabolic status requires understanding these interactions.

Observation:

  • This study analyzed cross-sectional geometry and histomorphometry of the femur, humerus, and rib in immature humans from a medieval Lithuanian sample.
  • The research investigated how different loading regimes and metabolic stress influence bone properties.
  • The hypothesis was that metabolic bone loss is distributed to optimize mechanical competency across the skeleton.

Findings:

  • Results indicate mechanical compensation for metabolic bone loss in all analyzed bones, especially ribs, preserving skeletal strength under varying loads.
  • Microscopic bone loss was concentrated in high-load bones, potentially mitigating fracture risk.
  • Both mechanical and metabolic factors demonstrably influence bone morphology.

Implications:

  • Skeletal structural adjustments appear to preserve bone strength despite metabolic challenges.
  • The interaction between mechanics and metabolism has significant implications for interpreting biocultural stress and behavior in past human populations.
  • Understanding these bone adaptations is vital for accurate bioarchaeological reconstructions.