摘要
目的:采用5.0T磁共振成像分析髌下脂肪垫形态学特征与受检者性别、年龄、左右、髌骨长轴、皮下脂肪层厚度、膝关节骨性关节炎的关系,为髌下脂肪垫进一步研究奠定基础.方法:回顾性分析山东省立第三医院2023年5月—8月行5.0T磁共振膝关节扫描的93名患者的影像及临床资料,测量髌下脂肪垫的最大面积和厚度、髌骨长轴、膝前皮下脂肪厚度.统计分析采用独立样本t检验和Pearson相关性分析.结果:不同性别组髌下脂肪垫矢状面最大面积及最大深度在男性与女性两组间差异有统学意义(t=6.973、3.944,P均≤0.001),在左膝组与右膝组(t=0.468、0.560,P=0.641、0.577)、压脂高信号组与压脂无高信号组间(t=-1.643、-1.966,P=0.104、0.052)差异没有统计学意义.髌下脂肪垫的最大面积与年龄呈负相关(r=-0.470,P≤0.01),与髌下脂肪垫最大深度、髌骨长轴呈正相关(r=0.747、0.640,P≤0.01),与膝前皮下脂肪层厚度相关性不显著(r=-0.103,P=0.325).结论:5.0T超高场MRI可以清晰显示髌下脂肪垫的结构,通过分析髌下脂肪垫形态学特征与膝关节各项指标的关系,可为评估膝关节骨性关节炎提供新的思路与方法.
Abstract
Objective:The purposes of this study were to explore the morphological characteris-tics of the infrapatellar fat pad(Hoffa's fat pad)with 5.0T magnetic resonance imaging,and to analyze the relationship between the area and depth of infrapatellar fat pad with gender,age,left and right,pa-tellar long axis,subcutaneous fat thickness and knee osteoarthritis,so as to lay a foundation for further study of infrapatellar fat pad.Methods:The images and clinical data of 93 patients who underwent knee scan on 5.0T MRI in Shandong Province Third Hospital from May to August 2023 were retrospective-ly analyzed,and the maximum area and thickness of the infrapatellar fat pad,the long axis of patella and the subcutaneous fat thickness in front of knee were measured.Independent samples t-test and Pearson correlation analysis were used for statistical analysis.Results:The difference in the largest area and the maximum depth of infrapatellar fat pad between the male group and the female group was sta-tistically significant(t=6.973,3.944,P ≤0.001).There was no statistically significant difference be-tween the left knee group and the right knee group(t=0.468,0.560,P=0.641,0.577),as well as be-tween the high signal group and the non high signal group(t=-1.643,-1.966,P=0.104,0.052).The largest area of infrapatellar fat pad was negatively correlated with age(r=-0.470,P≤0.01),positively correlated with the maximum depth of infrapatellar fat pad and the long axis of patella(r=0.747,0.640,P≤0.01),but not significantly correlated with the subcutaneous fat thickness in front of knee(r=-0.103,P=0.325).Conclusion:A 5.0T ultra-high field magnetic resonance imaging can clearly show the structure of the infrapatellar fat pad.By analyzing the relationship between the mor-phological characteristics of the infrapatellar fat pad and various indexes of the knee joint,it provides new ideas and methods for evaluating knee osteoarthritis.
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