Validity and Reliability of a New Radiological Method to Estimate Medial Column Internal Rotation in Hallux Valgus Using Foot Weight-Bearing X-Ray.

Foot & ankle specialist Pub Date : 2024-02-01 Epub Date: 2021-07-11 DOI:10.1177/19386400211029162

Pablo Wagner, Nicole Lescure, Noman Siddiqui, Jessica Fink, Emilio Wagner

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Abstract

Background: Medial column internal rotation in hallux valgus (HV) can be measured using weight-bearing computed tomography (WBCT). Anteroposterior weight-bearing foot radiographs' (WBXR) ability to estimate medial column internal rotation in HV was evaluated comparing these measurements with those obtained from WBCT.

Methods: Three observers evaluated WBCT and WBXR of 33 HV feet twice. Medial column internal rotation was measured with WBCT and classified into 3 levels according to WBXR findings. Intra- and interobserver reliability were obtained for WBXR and WBCT, in addition to WBXR-WBCT correlation.

Results: WBXR and WBCT intraobserver agreement was substantial and near perfect, respectively (κ 0.79 and 0.84). Their interobserver agreement was excellent (intraclass correlation 0.85 and 0.9, respectively). The WBXR-WBCT correlation was substantial (κ 0.68). WBXR diagnostic accuracy to predict the WBCT results was 85%.

Conclusions: The proposed method for medial column internal rotation measurement using WBXR is reliable and has a substantial agreement with WBCT measurements.

Levels of evidence: Level III.

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利用足部负重 X 光片估算拇指外翻患者内侧骨柱内旋的新放射学方法的有效性和可靠性。

背景：拇指外翻（HV）的内侧柱内旋可通过负重计算机断层扫描（WBCT）测量。方法：由三名观察者对 33 名 HV 外翻患者的脚部进行 WBCT 和 WBXR 评估：三名观察者对 33 只 HV 足的 WBCT 和 WBXR 进行了两次评估。用 WBCT 测量内侧柱内旋，并根据 WBXR 结果将其分为 3 个级别。除了 WBXR 和 WBCT 的相关性外，还获得了 WBXR 和 WBCT 在观察者内部和观察者之间的可靠性：结果：WBXR 和 WBCT 观察者内的一致性很高，分别接近完美（κ 0.79 和 0.84）。它们的观察者间一致性非常好（类内相关性分别为 0.85 和 0.9）。WBXR 与 WBCT 的相关性很高（κ 0.68）。预测 WBCT 结果的 WBXR 诊断准确率为 85%：结论：使用 WBXR 测量内柱内旋的方法是可靠的，与 WBCT 测量结果有很大的一致性：证据等级：三级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Foot & ankle specialist

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