Original ResearchPublished 8 October 2026The fixed cortical fraction assumption in Hip Structure Analysis produces systematic, sex- and age- dependent errors in femoral neck morphology estimatesMadison S. Richards · Erin M. R. Bigelow · Robert W. Goulet · Bonnie T. Brooker-Nolan · Kyle J. Franklin · Karl J. Jepsen · Todd L. BredbennerFrontiers in Endocrinologydoi 10.3389/fendo.2026.1932381