Magnetic resonance imaging assessment of temporomandibular joint effusion with limitation of mouth opening after arthroscopic lysis and lavages

Asian Pacific Journal of Dentistry Pub Date : 1900-01-01 DOI:10.47416/apjod.21-0285

C. Igarashi, K. Kobayashi

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Abstract

Purpose: The purpose of this study was to analyse the correlation between the presence of temporomandibular joint (TMJ) effusion and limitation of mouth opening after arthroscopic surgery. Methods: The authors studied 88 joints in 86 patients with TMJ disorders who underwent lysis and lavage in the superior space of the TMJ. The patients were referred for magnetic resonance (MR) imaging before and after surgery. The joints were divided into two categories based on the presence of TMJ effusion. Chi-square tests were used to evaluate differences between distributions for these two groups. The alpha level was set to 0.05. Results: The number of joints with effusion decreased after surgery. However, after surgery, there was no significant difference between the distributions of TMJ effusion for TMJs with and without limitation of mouth opening. Conclusion: The amount of joint effusion in the temporomandibular joint decreased after surgery, but the effusion did not completely disappear even after the clinical symptoms improved. It was suggested that the joint effusion naturally accumulates in a vacant space, the upper joint space located in the lateral recess. (Asian Journal of Dentistry,

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关节镜下溶解和灌洗后伴有开口受限的颞下颌关节积液的磁共振成像评价

目的:本研究的目的是分析关节镜术后颞下颌关节积液与开口受限的关系。方法:对86例颞下颌关节紊乱患者88个关节进行颞下颌关节上间隙松解灌洗。患者术前、术后均行磁共振成像检查。根据颞下颌关节积液的存在将关节分为两类。卡方检验用于评估两组分布之间的差异。alpha水平设为0.05。结果:术后积液关节数减少。然而，术后，限制开口和不限制开口的TMJs患者的TMJ积液分布无显著差异。结论:手术后颞下颌关节积液量减少，但即使临床症状改善，积液也未完全消失。提示关节积液自然地积聚在空腔中，关节上腔位于外侧隐窝。(亚洲牙科杂志，

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Asian Pacific Journal of Dentistry

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