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The traction angle and cervical intervertebral separation.

A M Wong1, C P Leong, C M Chen

  • 1Department of Rehabilitation Medicine, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China.

Spine
|February 1, 1992
PubMed
Summary
This summary is machine-generated.

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Cervical traction increases intervertebral separation in neutral and flexion positions but not in extension. Extension traction can decrease posterior separation and potentially lead to facet joint separation.

Area of Science:

  • Orthopedics
  • Physical Therapy
  • Spinal Biomechanics

Background:

  • Cervical traction is a common therapeutic modality.
  • Understanding its effects on intervertebral and facet joint spaces is crucial for optimizing treatment.
  • Previous research has not fully elucidated the impact of varying traction angles on cervical spine kinematics.

Purpose of the Study:

  • To evaluate the effects of different cervical traction angles on intervertebral separation in young adults.
  • To compare the degree of anterior and posterior intervertebral separation across neutral, flexion, and extension positions.
  • To investigate the impact of traction on cervical facet joint separation.

Main Methods:

  • Seventeen healthy young adults underwent motorized intermittent cervical traction in a supine position.

Related Experiment Videos

  • Traction was applied at neutral, 15 degrees extension, and 30 degrees flexion angles.
  • Cervical intervertebral and facet joint separation were assessed.

    • Main Results:

    • Traction in neutral and 30 degrees flexion significantly increased anterior and posterior intervertebral spaces.
    • The greatest posterior separation occurred at C6-7 in the neutral position (37%).
    • Traction in 15 degrees extension significantly decreased posterior intervertebral separation and resulted in facet joint surface separation.

    Conclusions:

    • Cervical traction is angle-dependent, with neutral and flexion positions promoting intervertebral separation.
    • Extension traction appears to have an adverse effect, reducing separation and potentially causing facet joint issues.
    • These findings have implications for the clinical application of cervical traction therapies.