Hyperintensity signal in the joint space of the temporomandibular joint on fat-saturated T2-weighted magnetic resonance imaging

The British Journal of Oral & Maxillofacial Surgery
Shinya YuraTsuyoshi Shima

Abstract

Our aim was to investigate the incidence of a hyperintense signal in the joint space of the temporomandibular joint (TMJ) on fat-saturated T2-weighted magnetic resonance images (MRIs). We studied 112 patients (224 joints) with disorders of the TMJ who were examined by T2-weighted MRI, and recorded the association between displacement of the disc and the hyperintense signal using the κ coefficient. A hyperintense signal was found in 4 of 91 joints (4%) when the disc was in the normal position, in all 19 joints with anterior disc displacement with reduction, and in 108 of the 114 joints (95%) with anterior disc displacement without reduction. There was a significant correlation between displacement of the disc and the hyperintense signal (p<0.001). The κ coefficient was 0.91. Such a signal in the joint space of the TMJ on fat-saturated T2-weighted MRI may indicate the presence of synovial fluid in the joint space with displacement of the disc.

References

May 28, 2008·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Ami KuribayashiTohru Kurabayashi
Oct 31, 2008·The British Journal of Oral & Maxillofacial Surgery·ShanYong ZhangDan Yuan

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Citations

Mar 1, 2016·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·S El Assar de la FuenteK Rosendahl
Oct 2, 2012·The British Journal of Oral & Maxillofacial Surgery·Gururaj ArakeriPeter A Brennan

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