Early knee changes in dancers identified by ultra-high-field 7 T MRI.
Early knee changes in dancers identified by ultra-high-field 7 T MRI.
复制标题
通过超高场 7 T MRI 识别舞者的早期膝盖变化。
DOI：
10.1111/sms.12039
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发表时间：
2014
影响因子：
4.1
通讯作者：
Weiss,DS
中科院分区：
文献类型：
--
作者：
Chang,G;Diamond,M;Nevsky,G;Regatte,RR;Weiss,DS
我们的目的是确定一种独特的超高场7 T磁共振成像（MRI）扫描仪是否可以检测无症状女性舞者的隐性软骨和关节损伤。本研究已获得机构审查委员会的批准。我们招募了8名准职业女性舞者和9名非运动员女性对照组。我们在7 T MRI扫描仪上使用三维快速低角度激发序列和质子密度快速自旋回波序列扫描优势膝关节，以分别评价软骨和关节炎。两名放射科医生对软骨（国际软骨修复学会分类）和骨关节（Stoller分类）病变进行评分。我们应用双尾z andt检验来确定统计学显著性。舞者和对照组均无软骨损伤。与对照组相比，舞者内侧半月板的平均MRI评分较高（2.38 ± 0.61 vs 1.0 ± 0.97，P < 0.0001），平均2级病变的频率较高（88% vs 11%，P < 0.01）。外侧半月板评分舞蹈组为0.5 ± 0.81，对照组为0.5 ± 0.78，P = 0.78;无症状舞者表现出隐匿性内侧睾丸病变。因为这已经在早期骨关节炎中描述过，所以通过适当的活动调整来密切监测舞者的膝盖症状和功能可能有助于保持他们的长期膝盖健康。
We aimed to determine whether a unique, ultra‐high‐field 7 T magnetic resonance imaging (MRI) scanner could detect occult cartilage and meniscal injuries in asymptomatic female dancers. This study had Institutional Review Board approval. We recruited eight pre‐professional female dancers and nine non‐athletic, female controls. We scanned the dominant knee on a 7 T MRI scanner using a three‐dimensional fast low‐angle shot sequence and a proton density, fast spin‐echo sequence to evaluate cartilage and menisci, respectively. Two radiologists scored cartilage (International Cartilage Repair Society classification) and meniscal (Stoller classification) lesions. We applied two‐tailedz‐ andt‐tests to determine statistical significance. There were no cartilage lesions in dancers or controls. For the medial meniscus, the dancers demonstrated higher mean MRI score (2.38 ± 0.61 vs 1.0 ± 0.97,P< 0.0001) and higher frequency of mean grade 2 lesions (88% vs 11%,P< 0.01) compared with the controls. For the lateral meniscus, there was no difference in score (0.5 ± 0.81 vs 0.5 ± 0.78,P= 0.78) in dancers compared with the control groups. Asymptomatic dancers demonstrate occult medial meniscal lesions. Because this has been described in early osteoarthritis, close surveillance of dancers' knee symptoms and function with appropriate activity modification may help maintain their long‐term knee health.