Statistical shape model-based prediction of tibiofemoral cartilage. Issue 9 (4th July 2018)

• Record Type: Journal Article
• Authors: Van Dijck, Christophe; Wirix-Speetjens, Roel; Jonkers, Ilse; Vander Sloten, Jos
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 21:Issue 9(2018)
• Page Start: 568
• Page End: 578
• Publication Date: 2018-07-04
• Subjects: Statistical shape models -- cartilage -- bone -- tibiofemoral joint; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2018.1495711
• Languages: English
• ISSNs: 1025-5842

Abstract

Abstract: Computed tomography is used more routinely to design patient-specific instrumentation for knee replacement surgery. Its moderate imaging cost and simplified segmentation reduce design costs compared with magnetic resonance (MR) imaging, but it cannot provide the necessary cartilage information. Our method based on statistical shape modelling proved to be successful in predicting tibiofemoral cartilage in leave-one-out experiments. The obtained accuracy of 0.54 mm for femur and 0.49 mm for tibia outperforms the average cartilage thickness distribution and reported inter-observer MR segmentation variability. These results suggest that shape modelling is able to predict tibiofemoral cartilage with sufficient accuracy to design patient-specific instrumentation.