Sensitivity and specificity of MRI for diagnosis of meniscal tear in patients with knee pain or swelling

Subject Areas : علوم پزشکی

Khosro Shayan ¹ (استادیار، دانشکده پزشکی، دانشگاه آزاد اسلامی مشهد، مشهد، ایران)
Hamidreza Faraj Zadeh doin ² (دانشجوی رشته پزشکی، دانشکده پزشکی، دانشگاه آزاد اسلامی مشهد، مشهد، ایران)

Received: 2017-06-05 Accepted : 2017-06-05 Published : 2013-11-22

Keywords: Meniscal tear- Arthroscopy- MRI,

Abstract :

  Introduction : Magnetic resonance imaging [MRI] has revolutionised the diagnosis and management of intra-articular pathology and ligamentous injuries. Being non invasive and a highly sensitive tool of investigation, early and subtle changes in the soft tissues often are picked up by MRI. Our purpose was to study sensitivity and specificity of MRI for diagnosis of meniscal tear in patient with pain or swelling.   Methods : The patients sequentially had clinical examination,then MRI were performed a few days prior to arthroscopy. In 30 knees, sensitivity and specificity of MRI for the detection of tears were studied using arthroscopy as reference standard.   Results : Sensitivity and specificity of MRI for diagnosis of meniscal tear was 73.7% and 82.9% and for medial meniscal tear was 100% and 68.5% . Sensitivity and specificity of MRI for diagnosis of lateral meniscal tear was 37.5% and 95.4% .   Coclusion Particularly with regard to the medial meniscus, MRI could be effectively used when a tear is suspected , and it could be effectively used for disprove a tear of lateral meniscus. The high NPVs obtained in this study suggest that MRI is a valuable tool prior to arthroscopy.      

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