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Updated: Jan 15, 2026

In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
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In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint

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Allostatic load and pain: instability of a bio-social ecosystem

David Borsook1,2,3

  • 1Emeritus, Anaesthesiology, Harvard Medical School (HMS), Boston MA.

Pain
|October 14, 2025
PubMed

Keywords:
AccumbensAmygdalaBrainPain chronificationResilienceSalienceStress

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Impact loading occurs when a moving object collides with a stationary structure, such as a rod with a uniform cross-sectional area fixed at one end. Under these conditions, the rod absorbs the kinetic energy from the striking object, leading to deformation and subsequent stress development. As the rod returns to its original position and reaches maximum stress, the absorbed energy, initially manifested as kinetic energy, transforms entirely into strain energy.
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