Skip to main content Accessibility help
×
Home

The orientation of the articular facets of the zygapophyseal joints at the cervical and upper thoracic region

  • G. P. PAL (a1), R. V. ROUTAL (a1) and S. K. SAGGU (a1)

Abstract

Knowledge of the orientation of facet joints in the cervical and upper thoracic region is important for understanding the biomechanical properties and clinical conditions relevant to the neck. The study was undertaken on dry macerated bones from 30 adult male human vertebral columns. The orientation of the superior articular facets in relation to their inclination with the sagittal and transverse planes was examined between C3 and T3 vertebrae in each column. The linear dimensions of the superior articular facets and the width/height ratio were also calculated. The results show that all vertebrae at C3 level and 73% at C4 level displayed posteromedially facing superior articular facets. Similarly at T1 level (C7/T1 joint) and below, all columns showed posterolaterally facing superior articular facets. The level of change in orientation, from posteromedial to posterolateral facing superior facets, was not constant and occurred anywhere between C4 (C3/C4 joint) and T1 (C7/T1 joint). The change in orientation followed 2 different patterns, i.e. sudden or gradual. The C6 vertebra (C5/C6 joint) was the most frequent site to show the transition. The shape of the superior articular facets was circular to oval at C3, C4 and C5 levels and gradually changed to a transversely elongated surface at C7 and T1. These findings correlate well with various cervical movements and associated clinical conditions.

Copyright

Corresponding author

Correspondence to Professor G. P. Pal, Department of Anatomy, Modern Dental College and Research Centre, Gandhi Nagar–Air Post Road, Indore 753112, India.

Keywords

The orientation of the articular facets of the zygapophyseal joints at the cervical and upper thoracic region

  • G. P. PAL (a1), R. V. ROUTAL (a1) and S. K. SAGGU (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed