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J. Funct. Morphol. Kinesiol. 2016, 1(1), 126-139; doi:10.3390/jfmk1010126

Variability of Upper Cervical Anatomy: A Reflection on Its Clinical Relevance

1
Arthrokinematics Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Vrije Universiteit Brussel, Brussels 1090, Belgium
2
Department of Anatomy, Morphology and Biomechanics, Haute École Paul Henri Spaak, Brussels 1160, Belgium
3
Rehabilitation Research Laboratory 2rLab, Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, 6928 Manno, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editor: Giuseppe Musumeci
Received: 21 October 2015 / Revised: 3 February 2016 / Accepted: 23 February 2016 / Published: 9 March 2016
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Abstract

The upper cervical complex is a distinctive spinal area with a great need for mobility as well as stability. The specific anatomical morphology of the atlanto-occipital and of the atlanto-axial joints seems to support these complex functional demands. The present study reports on some systematic and non-systematic observations of specific morphological variations and variants of the upper cervical joint anatomy. They are reported with respect to morphological features of the transverse atlantal and alar ligaments, morphological features of the lateral atlanto-axial and atlanto-occipital joints, additional joint configurations of the atlanto-occipital junction, muscular attachments to the joint capsule of the lateral atlanto occipital joint, and the Processus styloideus in its relationship with movements of the upper cervical joints. The observations mainly confirm general anatomical descriptions from textbooks, although some confront with these basic anatomical configurations mainly due to large morphological variation. Additionally, specific anatomical variants may raise questions on the generally accepted functional anatomical features. Some of these specific morphological configurations may have major implications for the kinematics of the occipito-atlanto-axial complex. This paper intends to reflect on the functional impact of the observed upper cervical morphological variability. View Full-Text
Keywords: upper-cervical; atlanto-axial; atlanto-occipital; morphology; anatomy; facet joints; ligaments upper-cervical; atlanto-axial; atlanto-occipital; morphology; anatomy; facet joints; ligaments
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cattrysse, E.; Buzzatti, L.; Provyn, S.; Barbero, M.; Van Roy, P. Variability of Upper Cervical Anatomy: A Reflection on Its Clinical Relevance. J. Funct. Morphol. Kinesiol. 2016, 1, 126-139.

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J. Funct. Morphol. Kinesiol. EISSN 2411-5142 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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