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A Mouse Model of Lumbar Spine Instability
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Experimentally induced neck pain causes a decrease in thoracic but not lumbar spine stability.

Brendan L Pinto1, Shawn M Beaudette1, Ryan B Graham2

  • 1Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada.

Journal of Biomechanics
|May 2, 2019
PubMed
Summary
This summary is machine-generated.

Experimental neck pain reduced thoracic spine stability but did not significantly impact lower back stability or muscular stiffness. This suggests pain location influences spinal dynamic stability responses.

Keywords:
Back painLow backLyapunovNeck painStabilityStiffness

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Orthopedics

Background:

  • Spine stability is crucial for overall spinal health.
  • Previous research demonstrated that experimentally induced lower back pain decreases lumbar spine rotational stiffness and local dynamic stability (LDS).
  • It remains unclear if pain in other spinal regions affects lower back stability.

Purpose of the Study:

  • To investigate the effects of experimental neck pain on thoracic and lumbar spine local dynamic stability (LDS).
  • To assess the impact of experimental neck pain on the muscular contribution to lumbar spine rotational stiffness.

Main Methods:

  • A capsaicin/heat pain sensitization model was used to induce experimental neck pain.
  • Thoracic and lumbar spine LDS were quantified.
  • The muscular contribution to lumbar spine rotational stiffness was measured.

Main Results:

  • Experimental neck pain led to a decrease in thoracic spine LDS.
  • No statistically significant changes were observed in lumbar spine LDS.
  • The muscular contribution to lumbar spine rotational stiffness remained unchanged.

Conclusions:

  • Neck pain can negatively affect thoracic spine stability.
  • The lower back appears to have limited adaptation to experimentally induced neck pain in terms of LDS and rotational stiffness.
  • Pain location is a critical factor in the modulation of spinal stability.