Natural History of Intrameniscal Signal Intensity on Knee MR Images: Six Years of Data from the Osteoarthritis Initiative
Natural History of Intrameniscal Signal Intensity on Knee MR Images: Six Years of Data from the Osteoarthritis Initiative
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DOI：
10.1148/radiol.2015142905
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发表时间：
2016-01-01
期刊：
影响因子：
19.7
通讯作者：
Englund, Martin
中科院分区：
文献类型：
--
作者：
Kumm, Jaanika;Roemer, Frank W.;Englund, Martin
目的：为了评估的自然历史的intraperecal信号强度的磁共振（MR）图像的medial compartment.Materials和方法：两个膝盖的269名参与者（55%的妇女，年龄45-55岁）在骨关节炎倡议没有放射性膝关节炎（OA），没有内侧膝关节撕裂在基线进行了研究。一位放射科医生评估了基线和24、48和72个月随访时的3-T MR图像的颅内信号强度和撕裂。一个互补的对数-对数模型与随机效应被用来评估内侧髁撕裂的风险，调整年龄，性别，体重指数，和膝side.Results：在基线，线性intraocular信号强度在内侧间室存在于140膝（26%）。一旦出现，仅在单膝关节中观察到退化。在31个膝关节（19%）中，在前三个时间点的任何一个时间点上，线性内信号强度，信号强度进展为同一节段的撕裂，在单个膝关节中，撕裂发生在相邻节段。相应数量的撕裂，而没有事先发现的神经内信号强度是11（3%）。在调整后的模型中，与无线性信号强度时相比，如果存在线性脑内信号强度，则发生内侧半月板撕裂的风险比为18.2（95%置信区间：8.3，39.8）。只有一个43个膝盖受伤的报道与事件tear.Conclusion：在中年人没有OA，线性intrajuncal信号强度的MR图像是非常不可能解决，应被视为一个危险因素，内侧退行性juncal撕裂。(C)RSNA，2015年
Purpose: To assess the natural history of intrameniscal signal intensity on magnetic resonance (MR) images of the medial compartment.Materials and Methods: Both knees of 269 participants (55% women, aged 45-55 years) in the Osteoarthritis Initiative without radiographic knee osteoarthritis (OA) and without medial meniscal tear at baseline were studied. One radiologist assessed 3-T MR images from baseline and 24-, 48-, and 72-month follow-up for intrameniscal signal intensity and tears. A complementary log-log model with random effect was used to evaluate the risk of medial meniscal tear, adjusting for age, sex, body mass index, and knee side.Results: At baseline, linear intrameniscal signal intensity in the medial compartment was present in 140 knees (26%). Once present, regression only in a single knee was observed. In 31 knees (19%) with linear intrameniscal signal intensity at any of the first three time points, the signal intensity progressed to a tear in the same segment, and in a single knee, the tear occurred in an adjacent segment. The corresponding number of tears without prior finding of intrameniscal signal intensities was 11 (3%). In the adjusted model, the hazard ratio for developing medial meniscal tear was 18.2 (95% confidence interval: 8.3, 39.8) if linear intrameniscal signal intensity was present, compared when there was no linear signal intensity. There was only one of 43 knees with injury reported in conjunction with the incident tear.Conclusion: In middle-aged persons without OA, linear intrameniscal signal intensity on MR images is highly unlikely to resolve and should be considered a risk factor for medial degenerative meniscal tear. (C) RSNA, 2015