2020/03/27 by Simon Roner, Philipp Fürnstahl, Roner, Simon +7
Engineering · Mathematics · Medicine · Physics and Astronomy · #Anatomy #Artificial intelligence #Biomedical engineering #Bone fractures and treatments #Computer science #Distal radioulnar joint #Elbow and Forearm Trauma Treatment #FOS: Electrical engineering #FOS: Physical sciences #Forearm #Geometry #Image and Video Processing (eess.IV) #Materials science #Mathematics #Medical Physics (physics.med-ph) #Medicine #Nuclear medicine #Orientation (vector space) #Orthopedic Surgery and Rehabilitation #Radiography #Radiology #Sigmoid function #eess.IV #electronic engineering #information engineering #physics.med-ph
paper · pdf · doi:10.48550/arxiv.2003.12333
arxiv created 2020/03/27 · openalex publication_date 2020/03/27 · arxiv updated 2020/03/30 · openalex created_date 2022/07/26 · openalex updated_date 2026/08/04
The aim of this study was to develop a new method for generating reproducible\n3D measurements for the quantification of the distal radioulnar joint\nmorphology. We hypothesized that automated 3D measurement of the ulnar variance\nand the sigmoid notch angle are comparable to those of the gold standard, while\novercoming some of the drawbacks of conventional 2D measurements. Radiological\ndata of healthy forearm bones of 53 adult subjects were included in the study.\nAutomated measurements for the assessment of the sigmoid-notch morphology based\non 3D landmarks were developed incorporating the subject-specific estimation of\nthe cartilage surface orientation. A common anatomical reference was defined\namong the different imaging modalities and a comparison between the sigmoid\nnotch angle and UV measurements was performed in radiographs, CT scans and 3D\nmodels. Finally, the developed UV measurements in 3D were compared to the\nmethod by radiographs in an experimental setup with 3D printed bone models. The\nproposed automated 3D analysis of notch subtype showed a significantly larger\nnotch radius for negative notch angle compared to positive sigmoid notch angle\nsubjects. Similar UV measurements were obtained in healthy joint morphologies\nwith a high correlation between the radiographs and 3D measurements, for\nsigmoid notch angle and UV . In the experimental setup with a modified radial\ninclination, the UV was on average 1.13 mm larger in the radiographs compared\nto the 3D measurements, and 1.30 mm larger in the cases with a modified palmar\ntilt. The developed 3D measurements allowed to reliably quantify differences in\nthe sigmoid notch subtypes.\n