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Related Experiment Videos

Functional diagnostics of the cervical spine using computer tomography.

J Dvorak1, L Penning, J Hayek

  • 1Department of Neurology and Orthopedic Surgery, Wilhelm Schulthess Hospital, Zurich, Switzerland.

Neuroradiology
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

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Functional CT scans identified abnormal upper cervical spine rotation in patients with therapy-resistant neck pain after injury. These findings suggest potential hypermobility or hypomobility, guiding treatment considerations.

Area of Science:

  • Orthopedics
  • Radiology
  • Biomechanics

Background:

  • Cervical spine injuries can lead to persistent neck pain.
  • Functional assessment of upper cervical spine (occiput/atlas, C1/C2) rotation is crucial for diagnosing instability.

Purpose of the Study:

  • To establish normal ranges for upper cervical spine axial rotation.
  • To identify segmental hypermobility and hypomobility in patients with therapy-resistant neck pain post-cervical spine injury.

Main Methods:

  • Functional CT scans were performed on 35 healthy adults and 137 patients with cervical spine injuries.
  • Axial rotation was measured at the occiput/atlas, atlas/axis, and adjacent segments.
  • Normal values were established based on a 98% confidence level.

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Main Results:

  • Defined thresholds for hypermobility (>7° occiput/atlas, >54° C1/C2) and hypomobility (<29° C1/C2).
  • 45 of 137 patients exhibited upper cervical spine hypermobility.
  • 17 patients showed hyper- or hypomobility at various levels; 10 had C1/C2 hypomobility alone.

Conclusions:

  • Functional CT is effective in detecting upper cervical spine rotational abnormalities.
  • Findings suggest a high prevalence of segmental hypermobility/hypomobility in patients with therapy-resistant neck pain.
  • Surgical correction of rotary instability may be considered post-diagnostic stabilization.