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Related Concept Videos

Herniated Intervertebral Disc l: Introduction01:29

Herniated Intervertebral Disc l: Introduction

Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...

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A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.
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Intradiscal Pressure Changes during Manual Cervical Distraction: A Cadaveric Study.

M R Gudavalli1, T Potluri, G Carandang

  • 1Palmer Center for Chiropractic Research, 741 Brady Street, Davenport, IA 52803, USA.

Evidence-Based Complementary and Alternative Medicine : Ecam
|September 12, 2013
PubMed
Summary
This summary is machine-generated.

Manual cervical distraction (MCD) significantly reduces intradiscal pressure (IDP) in the lower cervical spine. This chiropractic technique showed high reliability in decreasing pressure, particularly with flexion and traction.

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Area of Science:

  • Chiropractic research
  • Spinal biomechanics
  • Orthopedics

Background:

  • Intradiscal pressure (IDP) is a key indicator of spinal health.
  • Manual cervical distraction (MCD) is a chiropractic technique used to alleviate neck pain.
  • Understanding IDP changes during MCD is crucial for optimizing treatment efficacy.

Purpose of the Study:

  • To quantify intradiscal pressure (IDP) variations in the lower cervical spine during manual cervical distraction (MCD).
  • To assess the impact of different MCD techniques on IDP.
  • To evaluate the reliability of chiropractors in performing MCD.

Main Methods:

  • Pressure transducers were inserted into lower cervical discs (C4-C7) of nine specimens.
  • Four experienced doctors of chiropractic (DCs) performed MCD with varying headpiece positions and contact points (C5/C6).
  • Intradiscal pressure, traction forces, and applied forces were measured and analyzed using descriptive statistics.

Main Results:

  • Significant IDP decreases were observed across all measured lower cervical levels (C4-C5, C5-C6, C6-C7), with mean reductions up to 168.7 KPa.
  • MCD involved mean traction forces up to 119.2 N and posterior-to-anterior forces up to 82.6 N.
  • IDP reduction was most pronounced during moving flexion and traction, followed by neutral traction, fixed flexion, and generalized traction.

Conclusions:

  • Manual cervical distraction effectively reduces intradiscal pressure in the lower cervical spine.
  • The technique demonstrates high intraclinician reliability for IDP reduction among chiropractors.
  • Specific MCD techniques, particularly involving flexion and traction, yield greater IDP decreases.