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• Clinical Article •
Study on MRI features of disc-condylar complex and semiquantitative evaluation of peridisc attachment in cases of temporomandibular joint disc displacement
ZHANG Guolai  LIAO Yanyang  WU Meina  ZHENG Pingping  PAN Zaixing  YAN Jinzhu 

Cite this article as: ZHANG G L, LIAO Y Y, WU M N, et al. Study on MRI features of disc-condylar complex and semiquantitative evaluation of peridisc attachment in cases of temporomandibular joint disc displacement[J]. Chin J Magn Reson Imaging, 2024, 15(2): 7-13. DOI:10.12015/issn.1674-8034.2024.02.002.


[Abstract] Objective To investigate the relationship of peridisc attachment to articular disk and condylar morphology in anterior disc displacement with reduction (ADDWR) and anterior disc displacement without reduction (ADDWoR) by analyzing the magnetic resonance imaging (MRI) features of disc-condylar complex and semi-quantitative grading method of peridiscal attachment.Materials and Methods Retrospective analysis of 74 patients (114 sides) were diagnosed with anterior disc displacement of temporomandibular joint by MRI scan at the Department of Radiology of Fujian Provincial Hospital from May 2021 to September 2022. They were divided into reduction (39 sides) and non-reduction (75 sides) groups. Joint disk morphology were divided into four types (Ⅰ-Ⅳ), condylar morphology into three types and peridisc attachment into six grades. The Kruskal-Wallis test was employed to compare the difference of joint disk morphology, condylar morphology and peridisc attachment between the two groups. The Mann-Whitney U test was used compare the overall and attachment scores of joint disk morphology, condylar morphology and peridisc attachment. Spearman rank correlation analysis was used to compare the overall score of joint disk morphology, condylar morphology and peridisc attachment, as well as the correlation coefficient of attachment and joint disk-condylar complex reducibility. Binary logistic regression was adopted to choose the independent risk factors from peridisc attachment models to predict the joint disk-condylar complex reducibility.Results Except type Ⅲ and type Ⅳ, joint disk morphology difference presented statistical significance (P<0.05). Condylar morphology difference presented statistical significance (P<0.05). Except grade 1 to 4, grade 5/grade 6, peridisc attachment grading difference presented statistical significance (P<0.05). Reduction of articular disk was strongly positively correlated to articular disk morphology, condylar morphology and total values of peridisc attachment (r=0.824, 0.626, 0.827, P<0.05). The prediction model of peridisc attachment showed that the lowerbilaminar region attachment was an independent risk factor for articular disc reduction with regression coefficient being 2.979 (OR=19.672, P<0.05).Conclusions By analyzing MRI features of disc-condylar complex and the proposed semi-quantitative evaluation, factors affecting articular disc reduction are effectively evaluated, which provides reliable imaging reference for clinical treatment.
[Keywords] temporomandibular disorders；temporomandibular joint internal derangement；disc-condylar complex；peridisc attachment；magnetic resonance imaging

ZHANG Guolai1*   LIAO Yanyang2   WU Meina3   ZHENG Pingping1   PAN Zaixing2   YAN Jinzhu3  

1 Department of Radiology, Fujian Provincial Governmental Hospital, Fuzhou 350001, China

2 Department of Stomatological, Fujian Provincial Governmental Hospital, Fuzhou 350001,China

3 Department of Neurology, Fujian Provincial Governmental Hospital, Fuzhou 350001, China

Corresponding author: ZHANG G L, E-mail: zhang200010043@126.com

Conflicts of interest   None.

Received  2023-06-07
Accepted  2024-01-21
DOI: 10.12015/issn.1674-8034.2024.02.002
Cite this article as: ZHANG G L, LIAO Y Y, WU M N, et al. Study on MRI features of disc-condylar complex and semiquantitative evaluation of peridisc attachment in cases of temporomandibular joint disc displacement[J]. Chin J Magn Reson Imaging, 2024, 15(2): 7-13. DOI:10.12015/issn.1674-8034.2024.02.002.

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