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顎関節後円板変位のMRIと臨床所見の検討
MRI and clinical findings of posterior disk displacement in the temporomandibular joint.
PMID: 18206399 DOI: 10.1016/j.tripleo.2007.07.034.
抄録
目的:
本研究の目的は、側頭顎関節の後円板変位を有する患者の磁気共鳴画像と臨床所見を評価することであった。
OBJECTIVE: The objective of this study was to evaluate the magnetic resonance imaging and clinical findings of patients with posterior disk displacement in the temporomandibular joint.
研究デザイン:
椎間板後方変位を有する側頭顎関節62関節(44人)の磁気共鳴と臨床所見をレトロスペクティブに解析した。
STUDY DESIGN: Magnetic resonance and clinical findings of 62 temporomandibular joints (44 patients) with posterior disk displacement were retrospectively analyzed.
結果:
Westessonらが提案した基準によると、52個の側頭顎関節(84%)は薄い平板型で、残りの10個(16%)は有孔円板型であった。15個の側頭顎関節(24%)に脱臼の既往歴があった。カチッと音がしたのは26個の側頭顎関節(42%)で、そのすべてが薄型フラットディスクタイプであった(カイ二乗検定、P < 0.01)。痛みは、薄い扁平板タイプの患者の19%と穿孔板タイプの患者の60%で観察された(P < 0.05)。
RESULTS: According to the criteria proposed by Westesson et al., 52 temporomandibular joints (84%) were the thin flat disk type and the remaining 10 (16%) were the perforated disk type. Fifteen temporomandibular joints (24%) had a history of luxation. Clicking was observed in 26 temporomandibular joints (42%), all of which were the thin flat disk type (chi-square test, P < .01). Pain was observed in 19% of patients with the thin flat disk type and 60% of those with the perforated disk type (P < .05).
結論:
磁気共鳴画像検査により、側頭顎関節の後円板変位の詳細を明らかにすることができた。臨床所見は薄平板型と穿孔型で異なっていた。
CONCLUSIONS: Magnetic resonance imaging could clearly reveal the details of posterior disk displacement in the temporomandibular joint. The clinical findings were dissimilar between the thin flat and the perforated disk type.