Patients with suspected meniscal tears: Prevalence of abnormalities seen on MRI of 100 symptomatic and 100 contralateral asymptomatic knees
Patients with suspected meniscal tears: Prevalence of abnormalities seen on MRI of 100 symptomatic and 100 contralateral asymptomatic knees
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DOI：
10.2214/ajr.181.3.1810635
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发表时间：
2003-09-01
影响因子：
5
通讯作者：
Hodler, J
中科院分区：
文献类型：
--
作者：
Zanetti, M;Pfirrmann, CWA;Hodler, J
目标。本研究的目的是评估怀疑半月板撕裂的患者在有症状和对侧无症状侧的膝关节MR异常的患病率。研究对象和方法。100例疑似半月板撕裂的患者（平均年龄42.7岁，范围1873岁）在对侧膝关节无症状的情况下，通过双膝MRI进行前瞻性检查。确定了各种类型半月板撕裂和其他MR异常的患病率。57例有症状的膝关节和36例对侧无症状的膝关节出现半月板撕裂。在这57例症状侧半月板撕裂的患者中，对侧无症状撕裂的患病率为63%（36/57）。水平或斜半月板撕裂32例出现内侧，1例出现外侧；29例出现内侧，8例出现外侧。18例有症状的膝关节内侧撕裂，5例有症状的膝关节外侧撕裂，5例无症状的膝关节内侧撕裂，5例无症状的膝关节外侧撕裂。53例有症状膝和6例无症状膝发现副韧带异常。64例有症状膝和12例无症状膝出现囊周软组织异常。36例有症状的膝关节和3例无症状的膝关节出现水肿样骨髓异常。水平或斜半月板撕裂经常发生在无症状和有症状的膝盖上，可能并不总是与症状有关。然而，桡骨、垂直、复杂或移位的半月板撕裂以及副韧带、囊周软组织和骨髓的异常几乎只出现在有症状的一侧，似乎在临床上更有意义。
OBJECTIVE. The purpose of this study was to evaluate the prevalence of MR abnormalities of the knee on the symptomatic and contralateral asymptomatic sides in patients with suspected meniscal tears.SUBJECTS AND METHODS. One hundred patients (mean age, 42.7 years; range, 1873 years) referred for suspected meniscal tears were prospectively examined with MRI of both knees when the contralateral knee was asymptomatic. The prevalence of various types of meniscal tears and other MR abnormalities was determined.RESULTS. Meniscal tears were found in 57 symptomatic knees and in 36 contralateral asymptomatic knees. In those 57 patients with a meniscal tear on the symptomatic side, the prevalence of asymptomatic tears in the contralateral side was 63% (36/57). Horizontal or oblique meniscal tears were found medially in 32 and laterally in I I symptomatic knees, and medially in 29 and laterally in eight asymptomatic knees. Radial, vertical, complex, or displaced tears were found medially in 18 and laterally in five symptomatic knees, and medially in five and laterally in none of the asymptomatic knees. Collateral ligament abnormalities were found in 53 symptomatic knees and in six asymptomatic knees. Pericapsular soft-tissue abnormalities were found in 64 symptomatic and in 12 asymptomatic knees. Edema-like bone marrow abnormalities were found in 36 symptomatic and in three asymptomatic knees.CONCLUSION. Horizontal or oblique meniscal tears are frequently encountered in both asymptomatic and symptomatic knees and may not always be related to symptoms. However, radial, vertical, complex, or displaced meniscal tears and abnormalities of the collateral ligaments, pericapsular soft tissues, and bone marrow are found almost exclusively on the symptomatic side and appear to be clinically more meaningful.