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Related Experiment Videos

Forces measured during spinal manipulative procedures in two age groups.

M C Harms1, S M Innes, D L Bader

  • 1Camden and Islington Community Trust, The Middlesex Hospital, London, UK.

Rheumatology (Oxford, England)
|May 18, 1999
PubMed
Summary
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Objective measurements of forces during spinal manipulative therapy (SMT) were analyzed. While force magnitudes were similar across age groups, older adults experienced lower amplitude and higher frequency oscillations during SMT.

Area of Science:

  • Biomedical Engineering
  • Orthopedics
  • Physical Therapy

Background:

  • Spinal manipulative therapy (SMT) is a common treatment for back pain.
  • The application of SMT lacks standardization and objective quantification.
  • Variability exists in SMT techniques among therapists and professional groups.

Purpose of the Study:

  • To develop and utilize an instrumented mobilization couch for measuring SMT forces.
  • To characterize the forces applied during spinal mobilization techniques.
  • To compare forces applied to healthy young adults and older patients with back pain.

Main Methods:

  • An instrumented mobilization couch was engineered to quantify forces during SMT.
  • Five mobilization techniques were applied to the lumbar spines of 30 healthy young adults.

Related Experiment Videos

  • The same techniques were applied to a clinical sample of 31 patients aged 45-65 years.

    • Main Results:

    • Median forces during Grade III procedures were comparable: 164 N (young) and 168 N (older).
    • Forces applied to the older group showed significantly smaller amplitude and higher frequency oscillations (P < 0.001).
    • Objective force measurements provide quantifiable data on SMT application.

    Conclusions:

    • Objective force measurements can standardize and quantify SMT.
    • This technology aids in evaluating and teaching SMT techniques.
    • Understanding force characteristics is crucial for effective and safe SMT delivery.