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Developmental cervical spinal canal size: population reference range.

James F Griffith1, Jeremiah C H Lee1

  • 1Department of Imaging & Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.

Quantitative Imaging in Medicine and Surgery
|April 15, 2024
PubMed
Summary
This summary is machine-generated.

Developmental cervical spinal canal size varies significantly in the Hong Kong population. This study established a reference range to objectively assess an individual's spinal canal dimensions, aiding in the evaluation of neural compression risks.

Keywords:
Cervicaldevelopmentalsizespinal canal

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Area of Science:

  • Anatomy
  • Radiology
  • Orthopedics

Background:

  • Cervical spinal canal size exhibits considerable developmental variation.
  • A smaller spinal canal increases the risk of neural compression and injury.

Purpose of the Study:

  • To establish a population-specific reference range for developmental cervical spinal canal dimensions in Hong Kong.
  • To provide objective criteria for assessing cervical spinal canal size relative to the general population.

Main Methods:

  • Prospective study of 522 ambulatory patients (aged 20-89 years) undergoing CT neck examinations.
  • Manual segmentation used to measure spinal canal and vertebral body cross-sectional area (CSA) and sagittal diameters (C3-C7).
  • Patient height and weight were recorded.

Main Results:

  • Significant variation in spinal canal size observed, with substantial differences between largest and smallest CSA at C5 (164-168%).
  • Spinal canal measurements correlated positively with height and were significantly larger in males.
  • Relative to vertebral body CSA, spinal canal CSA was larger in females, despite absolute male measurements being larger.

Conclusions:

  • A wide range of developmental cervical spinal canal sizes exists within the Hong Kong population.
  • A population reference range was successfully developed for objective assessment of cervical spinal canal size.
  • This reference range facilitates the identification of individuals with potentially compromised spinal canal dimensions.