Artificial Intelligence Autonomously Measures Cup Orientation, Corrects for Pelvis Orientation, and Identifies Retroversion From Antero-Posterior Pelvis Radiographs

The accuracy of cup anteversion measurement on postoperative pelvic radiographs: A comparative retrospective cohort study between DDH and non-DDH patients

“…Previous studies have highlighted reliability issues in using X-rays for the assessment of acetabular cup orientation, and it is generally believed that measurements of cup inclination are reliable, while assessments of cup anteversion are less dependable due to those confounding factors [ 6 ]. Efforts to refine X-ray measurement of acetabular cup anteversion have been successful [ 7 , 8 ], but their complexity has limited clinical adoption, keeping Lewinnek's method as the predominant and classic choice [ 9 ]. Research has revealed that radiographic anteversion changes by approximately 0.8° for each degree of pelvic tilt [ 10 ].…”