Park Gi-Young, Kim Jong-Min, Lee Sung-Moon, Lee Michael Y
Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, Nam-gu, Daegu, South Korea.
Am J Phys Med Rehabil. 2008 Jan;87(1):14-20. doi: 10.1097/PHM.0b013e31815e643a.
To evaluate the diagnostic value of ultrasonography in meniscal tears that were diagnosed by magnetic resonance imaging (MRI).
Twenty-seven knees with meniscal tears and 14 knees without tears on MRI were prospectively evaluated. A radiologist performed the ultrasonography and evaluated the presence and locations of the meniscal tears. MRI was used as the reference standard.
Twenty-nine menisci with tears and 53 menisci without tears were identified by MRI. Twenty-two tears were in the medial menisci, and seven tears were in the lateral menisci. In the 29 meniscal tears, the ultrasonographic diagnosis was correct in 25 (86.2%) and incorrect in 4 (13.8%) menisci. In the 53 menisci without tears, the ultrasonographic diagnosis was correct in 45 (84.9%) and incorrect in 8 (15.1%) menisci. Ultrasonography showed a sensitivity, specificity, accuracy, and positive and negative predictive values for meniscal tears of 86.2%, 84.9%, 85.4%, 75.8%, and 91.8%, respectively. Of the four intracapsular injuries observed by MRI in injured knees, an osteochondritis dessecans was only observed by ultrasonography.
Ultrasonography is an accurate imaging study for diagnosing meniscal tears. The results correlated with those obtained by MRI; this suggests that ultrasonography can be a useful imaging modality in uninjured knees.
评估超声检查对经磁共振成像（MRI）诊断的半月板撕裂的诊断价值。
对27例MRI显示有半月板撕裂的膝关节和14例无撕裂的膝关节进行前瞻性评估。一名放射科医生进行超声检查并评估半月板撕裂的存在及位置。MRI作为参考标准。
MRI识别出29个有撕裂的半月板和53个无撕裂的半月板。内侧半月板有22处撕裂，外侧半月板有7处撕裂。在29例半月板撕裂中，超声诊断正确的有25例（86.2%），错误的有4例（13.8%）。在53例无撕裂的半月板中，超声诊断正确的有45例（84.9%），错误的有8例（15.1%）。超声检查对半月板撕裂的敏感性、特异性、准确性以及阳性和阴性预测值分别为86.2%、84.9%、85.4%、75.8%和91.8%。在受伤膝关节中通过MRI观察到的4例关节囊内损伤中，超声检查仅观察到1例剥脱性骨软骨炎。
超声检查是诊断半月板撕裂的一种准确的影像学检查方法。结果与MRI检查结果相关；这表明超声检查在未受伤的膝关节中可能是一种有用的影像学检查方式。
