负重和非负重锥形束 CT 测量下胫腓联合远端不稳定的可靠性。
Reliability of distal tibio-fibular syndesmotic instability measurements using weightbearing and non-weightbearing cone-beam CT.
机构信息
Department of orthopedic surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
出版信息
Foot Ankle Surg. 2019 Dec;25(6):771-781. doi: 10.1016/j.fas.2018.10.003. Epub 2018 Oct 31.
BACKGROUND
To investigate the reliability and reproducibility of syndesmosis measurements on weightbearing (WB) cone-beam computed tomography (CBCT) images and compare them with measurements obtained using non-weightbearing (NWB) images.
METHODS
In this IRB-approved, retrospective study of 5 men and 9 women with prior ankle injuries, simultaneous WB and NWB CBCT scans were taken. A set of 21 syndesmosis measurements using WB and NWB images were performed by 3 independent observers. Pearson/Spearman correlation and intra-class correlation (ICC) were used to assess intra- and inter-observer reliability, respectively.
RESULTS
We observed substantial to perfect intra-observer reliability (ICC=0.72-0.99) in 20 measurements. Moderate to perfect agreement (ICC=0.45-0.97) between observers was noted in 19 measurements.
CONCLUSION
Measurements evaluating the distance between tibia and fibula in the axial plane 10mm above the plafond had high intra- and inter-observer reliability. Mean posterior tibio-fibular distance, diastasis, and angular measurement were significantly different between WB and NWB images.
背景
本研究旨在探讨负重（WB）锥形束 CT（CBCT）图像上距骨-腓骨联合测量的可靠性和可重复性，并将其与非负重（NWB）图像上的测量结果进行比较。
方法
本研究为经机构审查委员会批准的回顾性研究，共纳入 5 名男性和 9 名女性既往踝关节损伤患者。所有患者均行 WB 和 NWB 锥形束 CT 扫描。由 3 名独立观察者分别对 WB 和 NWB 图像进行 21 项距骨-腓骨联合测量。采用 Pearson/Spearman 相关系数和组内相关系数（ICC）分别评估观察者内和观察者间的可靠性。
结果
20 项测量的观察者内可靠性较高（ICC=0.72-0.99）。19 项测量的观察者间一致性较好（ICC=0.45-0.97）。
结论
评估距骨和腓骨在轴位平面上距距骨穹隆 10mm 处的距离的测量具有较高的观察者内和观察者间可靠性。WB 和 NWB 图像上的后胫腓间距、分离度和角度测量值存在显著差异。
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