Park YS, et al. - Experts assessed the reliability and accuracy of 6 widely utilized methods (Liaw et al., Lewinnek et al., Widmer, Hassan et al., Ackland et al., and Woo and Morrey) for measuring anteversion on plain radiographs, using a reference standard in the same definition obtained from the PolyWare programme in patients who underwent primary unilateral total hip arthroplasty (THA). Findings suggested that compared to other methods using plain radiographs for the measurement of the anteversion of the acetabular component after THA, the method of Liaw et al. was more accurate, with reference to the anteversion obtained from the PolyWare programme.