The Use of a Horizontal Reference Line While Measuring the Anterior Center Edge Angle Is More Reliable Than the Traditional Method

The novel method of measurement was found to have strong agreement within each reviewer across both measurement attempts as well as between all 3 physician reviewers. The traditional method was found to have weak intrarater reliability for 1 of 3 physician reviewers and weak interrater reliability for 2 of 3 reviewers. These results demonstrate that the novel method was more reproducible across individual reviewers and between different reviewers. As such, consideration should be given to utilizing the novel method for measuring the ACEA as a standardized technique in future research efforts on hip dysplasia and femoroacetabular impingement.