| 摘要: |
| 目的 验证剪切波弹性成像（Shear wave elastography，SWE）评估距腓前韧带（Anterior talofibular ligament，ATFL）的可行性，评估正常人ATFL的组织力学特性。方法 42个（21名志愿者的双侧ATFL）正常距腓前韧带行常规超声及SWE检查，测量中立位及跖屈内翻位ATFL的剪切波速度（Shear wave velocities，SWVs）并比较其差异。剪切波速度测量位置：L1：韧带中心位置；L2：距腓骨附着处5mm内；L3：距距骨附着处5mm内，采用组内相关系数（ICC）评估观察者间一致性。对SWE条件下显示为无信号区域的ATFL行压迫式弹性成像检查，比较中立与跖屈内翻位ATFL弹性比值。结果 42个ATFL不同体位（中立位vs跖屈内翻位）的剪切波速度具有显著差异[L1：2.2±0.5（m/s）vs4.9±1.5（m/s），L2：2.1±0.5（m/s）vs4.9±1.7（m/s），L3：2.2±0.6（m/s）vs4.6±1.1（m/s），P均＜0.01 ]；ATFL三个部位（L1、L2、L3）的SWVs值差异均无统计学意义（P=0.288）；不同性别ATFL的SWVs差异无统计学意义（中立位：t=0.326；跖屈内翻位：t=1.630，P均＞0.05）；双侧对比，三个部位（L1、L2、L3）的SWVs差异无统计学意义（t=1.092，0.598，0.879，P均＞0.05）。压迫式弹性成像中，不同体位的ATFL弹性具有显著差异（中立位vs跖屈内翻位：3.63±1.20 vs 14.70±9.07，z=－4.157，P＜0.01）。中立位与跖屈位的观察者间可重复性均较好（ICC≥0.75）。结论 SWE是一种有价值的成像工具，在评估ATFL的组织力学特征方面可靠性高，可为ATFL损伤及恢复过程中提供量化力学信息。 |
| 关键词: 弹性成像技术：高频超声 距腓前韧带 损伤和恢复 |
| DOI： |
| 投稿时间：2021-04-01修订日期：2021-06-11 |
| 基金项目:山东省医药卫生科技发展计划项目 |
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| Feasibility study of ultrasound elastography for the evaluation of the talofibular anterior ligament |
| JIAO Yuting,Cui Guanghe,Hu Jiandi,Zhao Chaochao,Yang Zhi |
| () |
| Abstract: |
| Objective To evaluate the feasibility of shear wave elastography in evaluating the anterior talofibular ligament and to determine the in vivo mechanical properties of the ATFL in healthy person. Methods Forty-two (21 volunteers with bilateral ATFL) healthy ATFL represented as shear wave velocities as well as conventional ultrasound were obtained for the ATFL in neutral and plantar flexor varus ankle position and compared the differences. For SWE tissue elasticity(m/s) was measured at Location 1: central position of ligament; Location 2: 5mm distal of the fibula attachment;and location 3: 5mm distal of the talus attachment, intra class correlation coefficient (ICC) was used to evaluate interobserver consistency.Compression elastography (CE) was performed on ATFL in the non-signal region under SWE conditions and compare the elasticity of the ATFL in neutral and plantiar flexion pronator varus ankle position. Results The SWVs of 42 ATFL in different positions (neutral vs plantar flexor varus) were significantly different（P＜0.01）. Different sites ( L1, L2, L3 ) ( P =0.288 )，different genders ( P >0.05 ) , and bilateral comparison showed no significant difference in SWVs（P>0.05 ) . In compression elastography, the elastic ratio of ATFL and guide pad in different positions was significantly different ( P < 0.01 ). The interobserver reliability revealed an ICC of 0.750~0.969. Conclusion SWE is a valuable diagnostic modality with high reliability in assessing the mechanical properties of ATFL tissue, and can provide in vivo mechanical properties for ATFL damage and recovery. |
| Key words: Elastography Ultrasonography Anterior talofibular ligament Wound and recover |
