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Surgical and Radiologic Anatomy
Published in: Surgical and Radiologic Anatomy 2/2014

01-03-2014 | Original Article

Temporomandibular joint model: anatomic and radiologic comparison between rat and human

Authors: Emmanuelle Orset, Philippe Chaffanjon, Georges Bettega

Published in: Surgical and Radiologic Anatomy | Issue 2/2014

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Abstract

Purpose

The temporomandibular joint (TMJ) is a complex anatomic structure with various pathologies as fractures, ankylosis or degenerative diseases. Few animal models already exist and the current study aims at demonstrating that rats’ TMJ could be considered as a model, using anatomic dissection and radiology.

Methods

Five adult Wistar rats were dissected to explore the soft and bone anatomy of the TMJ. Five more adult Wistar rats underwent a CT scan to measure size and angles of the condyle.

Results

The angles between the condyle and the mandible corpus were observed to be different both in the sagittal plane (150° vs. 125° in human) and the transversal plane (140° vs. 180°). The condyle axis is sagittal and drop-shaped and there is no anterior eminence in rats’ temporal fossa. However, the other anatomic structures proved to be quite similar.

Conclusions

The temporomandibular joints in human and rat are close and only few anatomic differences have been reported. Rats thus appear as an interesting and cheap alternative to model TMJ.
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Metadata
Title
Temporomandibular joint model: anatomic and radiologic comparison between rat and human
Authors
Emmanuelle Orset
Philippe Chaffanjon
Georges Bettega
Publication date
01-03-2014
Publisher
Springer Paris
Published in
Surgical and Radiologic Anatomy / Issue 2/2014
Print ISSN: 0930-1038
Electronic ISSN: 1279-8517
DOI
https://doi.org/10.1007/s00276-013-1159-4

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