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Related Experiment Videos

Flexion and traction effect on C5-C6 foraminal space

S C Humphreys1, J Chase, A Patwardhan

  • 1Chattanooga Orthopaedic Group, Foundation for Research, TN 37404, USA.

Archives of Physical Medicine and Rehabilitation
|September 28, 1998
PubMed
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Cervical spine flexion significantly increases C5-C6 foraminal volume and isthmus area. This study in cadavers found that traction had minimal additional effect on these measurements.

Area of Science:

  • Orthopedic biomechanics
  • Radiology
  • Spinal anatomy

Background:

  • Cervical spinal stenosis can cause neurological deficits.
  • Understanding changes in foraminal dimensions is crucial for diagnosing and treating spinal stenosis.

Purpose of the Study:

  • To investigate the impact of cervical spine flexion and traction on the C5-C6 foraminal space in cadavers.
  • To quantify changes in foraminal volume and isthmus area.

Main Methods:

  • Nine cadaver cervical spines (C1-T3) were utilized.
  • Computed tomography (CT) imaging was performed in neutral, 15-degree flexion, and maximum flexion with and without 25lbs axial traction.
  • Foraminal volume and isthmus area at C5-C6 were measured and calculated.

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Main Results:

  • Cervical spine flexion alone led to a significant increase in C5-C6 foraminal volume and isthmus area.
  • The addition of axial traction produced minimal additional changes in these parameters.

Conclusions:

  • Cervical flexion, with or without traction, significantly enlarges the foraminal volume and area at the C5-C6 isthmus.
  • These findings are relevant for cervical spines exhibiting mild to moderate degenerative changes.