Validity and Reliability of a New Radiological Method to Estimate Medial Column Internal Rotation in Hallux Valgus Using Foot Weight-Bearing X-Ray
Date
2021
Type:
Article
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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.
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Citation
Wagner P, Lescure N, Siddiqui N, Fink J, Wagner E. 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. July 2021. doi:10.1177/19386400211029162
Keywords
Medial column pronation, Hallux valgus, Weight-bearing computer tomography, Weight-bearing AP view X-ray, Pronation classification, Bunion, Deformity