Morphometric and functional study of the canine atlantoaxial joint

Planchamp, Bastien; Bluteau, Jasmin; Stoffel, Michael H.; Precht, Christina; Schmidli, Fenella; Forterre, Franck (2019). Morphometric and functional study of the canine atlantoaxial joint. Research in veterinary science, 128, pp. 76-85. Elsevier 10.1016/j.rvsc.2019.11.005

[img] Text
1-s2.0-S0034528819306502-main.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (3MB) | Request a copy

The atlantoaxial joint can be affected by instability, in most cases a congenital pathology in young small breed dogs. Causes of atlantoaxial instability (AAI) are variable but are usually attributed to a lack of ligamentous support. The purpose of the present study was to specify the role of the ligamentous structures in the stabilisation of the atlantoaxial joint and to find possible adaptations of the ligaments’ internal structure to their specific function. Five Beagle cadavers were included in this study. Each dog was subjected to a computed tomography (CT) and a magnetic resonance imaging (MRI) examination of the upper cervical region. This region was then dissected and the ligamentous structures stabilising the atlantoaxial joint were measured and removed for histological analysis. A ligament to dens ratio (LDR) was established in order to provide a basis for comparison with the measurements taken in other dog breeds. MRI and gross anatomical measurements were very similar, confirming the validity of the results. MRI thus seems reliable for evaluating the ligamentous structures of the canine occipitoatlantoaxial region. The movement exerting the greatest stress on the atlantoaxial ligaments and inducing the greatest distension of the alar ligaments was a head flexion combined with a rotation. A clear adaptation of the ligamentous shape and internal structure to their specific function was observed. Histologically, alar ligaments consisted of wavy collagen fibres and a high proportion of elastic fibres, providing them with a remarkable elasticity compared to the transverse ligament structure which was much more rigid.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Research Foci > NeuroCenter
09 Interdisciplinary Units > Microscopy Imaging Center (MIC)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Clinical Neurology
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Small Animal Clinic > Small Animal Clinic, Surgery
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Clinical Radiology
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Small Animal Clinic
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Anatomy

UniBE Contributor:

Planchamp, Bastien; Bluteau, Jasmin Maria; Stoffel, Michael Hubert; Precht, Maria Christina; Schmidli-Davies, Fenella Elsa and Forterre, Franck

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)

ISSN:

0034-5288

Publisher:

Elsevier

Language:

English

Submitter:

Vanessa Alice Blum

Date Deposited:

04 Dec 2019 09:50

Last Modified:

18 Dec 2019 09:22

Publisher DOI:

10.1016/j.rvsc.2019.11.005

PubMed ID:

31759272

Uncontrolled Keywords:

Dog; Atlantoaxial joint; Morphometry; Function; Ligament; Histology

BORIS DOI:

10.7892/boris.135533

URI:

https://boris.unibe.ch/id/eprint/135533

Actions (login required)

Edit item Edit item
Provide Feedback