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Intervertebral disc pressures during traction.

G B Andersson, A B Schultz, A L Nachemson

    Scandinavian Journal of Rehabilitation Medicine. Supplement
    |January 1, 1983
    PubMed
    Summary
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    Active traction increases lumbar disc pressure, especially with higher forces. Passive traction shows minimal pressure changes. This highlights the role of muscle contraction in spinal disc loading during traction therapy.

    Area of Science:

    • Orthopedics
    • Spinal Biomechanics
    • Physical Therapy

    Background:

    • Lumbar disc pressure is a key factor in spinal health and pain.
    • Traction therapy is commonly used for low back pain, but its effect on disc pressure is debated.

    Purpose of the Study:

    • To investigate the in vivo effects of active and passive traction on third lumbar disc pressures.

    Main Methods:

    • In vivo measurement of pressures within the third lumbar intervertebral discs.
    • Application of both active and passive traction with varying forces.

    Main Results:

    • Active traction consistently increased lumbar disc pressure.
    • The magnitude of pressure increase during active traction correlated with applied force.

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  • Passive traction resulted in minimal changes to disc pressure, with slight increases or decreases observed.

    • Conclusions:

    • Active traction, which engages back muscles, leads to increased lumbar disc pressures.
    • The findings suggest that muscle contraction is a significant factor influencing disc pressure during traction.
    • Understanding these effects is crucial for optimizing traction therapy protocols.