open access

Vol 73, No 2 (2014)
ORIGINAL ARTICLES
Published online: 2014-06-02
Submitted: 2013-10-25
Accepted: 2013-12-08
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Individual variations in the vascular content of retrodiscal tissue in the temporomandibular joint: a study using histological sections of human foetuses and magnetic resonance images of adults without pathology

M. Yamamoto, K. H. Cho, S. S. Choi, J. F. Rodríguez-Vázquez, G. Murakami, S. Abe
DOI: 10.5603/FM.2014.0023
·
Folia Morphol 2014;73(2):153-158.

open access

Vol 73, No 2 (2014)
ORIGINAL ARTICLES
Published online: 2014-06-02
Submitted: 2013-10-25
Accepted: 2013-12-08

Abstract

The vascular content of retrodiscal tissue in the temporomandibular joint (TMJ) plays a critical role in joint function, and its morphology is therefore likely relatedto TMJ pain. Using histological sections of human foetuses as well as T2-weighted magnetic resonance images (MRI), we measured the vascular content of retrodiscal tissue. MRI showing no pathology in and around the TMJ were obtained from18 young patients who had been suffering from headache. In 10 small foetuses (12–14 weeks of gestation) as well as 10 larger foetuses (30–37 weeks), the vascular content showed individual variations exceeding 5 times the minimum value (0.24 vs. 0.04 mm2 per 1 mm2), but no difference between foetal stages was evident. In the MRI from young adults, the variation was less than twice the minimum value (13.6 vs. 8.7 mm2 per 100 mm2). The vascular density appeared to be lower in adults than in foetuses. In both foetuses and adults, the thickness (anteroposterior length) of the tissue did not correlate with the vascular sectional area. These findings suggest that the considerable inter-individual differences evident in the vascular content of foetal retrodiscal tissue may be reduced during further development.

Abstract

The vascular content of retrodiscal tissue in the temporomandibular joint (TMJ) plays a critical role in joint function, and its morphology is therefore likely relatedto TMJ pain. Using histological sections of human foetuses as well as T2-weighted magnetic resonance images (MRI), we measured the vascular content of retrodiscal tissue. MRI showing no pathology in and around the TMJ were obtained from18 young patients who had been suffering from headache. In 10 small foetuses (12–14 weeks of gestation) as well as 10 larger foetuses (30–37 weeks), the vascular content showed individual variations exceeding 5 times the minimum value (0.24 vs. 0.04 mm2 per 1 mm2), but no difference between foetal stages was evident. In the MRI from young adults, the variation was less than twice the minimum value (13.6 vs. 8.7 mm2 per 100 mm2). The vascular density appeared to be lower in adults than in foetuses. In both foetuses and adults, the thickness (anteroposterior length) of the tissue did not correlate with the vascular sectional area. These findings suggest that the considerable inter-individual differences evident in the vascular content of foetal retrodiscal tissue may be reduced during further development.

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Keywords

temporomandibular joint, retrodiscal tissue, human foetus, vascular content, individual differences, adult magnetic resonance imaging

About this article
Title

Individual variations in the vascular content of retrodiscal tissue in the temporomandibular joint: a study using histological sections of human foetuses and magnetic resonance images of adults without pathology

Journal

Folia Morphologica

Issue

Vol 73, No 2 (2014)

Pages

153-158

Published online

2014-06-02

DOI

10.5603/FM.2014.0023

Bibliographic record

Folia Morphol 2014;73(2):153-158.

Keywords

temporomandibular joint
retrodiscal tissue
human foetus
vascular content
individual differences
adult magnetic resonance imaging

Authors

M. Yamamoto
K. H. Cho
S. S. Choi
J. F. Rodríguez-Vázquez
G. Murakami
S. Abe

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