伴有踝关节外侧副韧带损伤的慢性外侧踝关节不稳患者距骨软骨的T2-mapping评估

被引:9
作者
陶虹月
胡忆文
乔洋
马魁
华英汇
陈爽
机构
[1] 复旦大学附属华山医院放射科
基金
上海市自然科学基金;
关键词
踝损伤; 外侧韧带,踝; 软骨疾病; 磁共振成像;
D O I
暂无
中图分类号
R445.2 [核磁共振成像]; R684 [关节疾病及损伤];
学科分类号
100220 [骨科学]; 100231 [临床病理学];
摘要
目的:应用T2-mapping定量评估伴有踝关节外侧副韧带(LAL)损伤的慢性外侧踝关节不稳(LAI)患者的距骨软骨退变情况。方法:搜集19例来本院就诊的伴有LAL损伤的慢性LAI患者和21例健康受试者。对这些研究对象进行T2-mapping扫描和美国足踝外科评分系统评分。将距骨滑车软骨分为内侧前部(MA)、内侧中部(MC)、内侧后部(MP)、外侧前部(LA)、外侧中部(LC)、外侧后部(LP)6个部分。测量并计算每个软骨区域的平均T2值,总距骨软骨(TTC)的T2值由6块软骨的平均T2值得到,计算慢性LAI组每个软骨区域T2值相对于对照组相应软骨区域T2值的增加率。应用独立样本t检验比较慢性LAI组与对照组各软骨区域T2值的差异,应用Pearson相关分析研究慢性LAI组T2值与美国足踝外科评分系统(AOFAS)评分的相关性。结果:慢性LAI组的距骨MA、MC、MP和TTC软骨区域的T2值高于对照组(分别为P<0.001,P=0.026,P=0.002,P<0.001),其中MA软骨区域T2值的增加率最为显著(18.65%)。慢性LAI患者的AOFAS评分为69.32±7.22,MA软骨区域的T2值与AOFAS评分呈负相关(r=-0.525,P<0.05),其余软骨区域T2值与AOFAS评分无明显相关性(P>0.05)。结论:伴有LAL损伤的慢性LAI患者的距骨软骨发生了退变,主要累及距骨内侧软骨面,MA软骨区域最为明显,MA是影响患者临床症状和预后的主要软骨区域。
引用
收藏
页码:625 / 629
页数:5
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