以高解像力超音波診斷膝半月軟骨破裂之可靠性

超音波近年來已成為診斷半月軟骨破損的重要工具。本研究的目的在於檢驗高解像力超音波對診斷膝半月軟骨破損的可靠性。在6個月的期間共有112個病人因膝部病變轉介至本部接受高解像力超音波檢查，所使用的是10MHz線性探頭，其中18名患者也同時接受膝關節鏡或核磁共振攝影檢查。在超音波的檢查中，正常的膝半月軟骨呈現均勻之中低回音三角型，三角型的頂點指向關節內部，破損的膝半月軟骨則於均勻的三角型內出現低回音合併高回音的區域。研究結果發現利用超音波來診斷膝半月軟骨的破裂，其敏感度為93.3%，特異性為76.5%，陽性推測率為77.8%，陰性推測率為92.8%。我們認為高解像力超音波是診斷膝半月軟骨破損的良好工具。

關鍵字

超音波；半月軟骨；診斷

並列摘要

Sonography (US) of the knee has gained in significance in the diagnosis of the meniscal injuries. In order to evaluate the diagnostic capabilities of US in meniscal lesions of the knee, 112 patients with suspected knee injury over a period of six months were studied with high-resolution US equipped with a 10 MHz linear transducer. Eighteen of them also received arthroscopy or magnetic resonance imaging, as a gold standard for detecting the meniscal lesion. The normal image of the meniscus in US appeared as a homogenous echogenic to hypoechoic triangle with the tip inward to the interior joint. A smooth hyperechoic reflecting plane in the otherwise homogenous structure of the meniscus was evidence of of a meniscal lesion. The results showed that the sensitivity of US in detecting a meniscal tear was 93.3%, the specificity was 76.5%, the positive predictive rate was 77.8%, and the negative predictive rate was 92.8%. We conclude that high-resolution US is a reliable tool in defining meniscal lesions of the knees.

並列關鍵字

ultrasound ； meniscus ； diagnosis

國際替代計量

以高解像力超音波診斷膝半月軟骨破裂之可靠性

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