Dynamic Contact Stress Patterns on the Tibial Plateaus during Simulated Gait: A Novel Application of Normalized Cross Correlation

摘要: The spatial distribution and pattern of local contact stresses within the knee joint during activities daily living have not been fully investigated. objective this study was to determine if common stress patterns exist on tibial plateaus human knees simulated gait. To test hypothesis, we developed a novel normalized cross-correlation (NCC) algorithm applied it 12 cadaveric subjected multi-directional loads mimicking profiles at different locations were compared, where regions with similar identified across specimens. Three consistent regional found, among them two most prominent shared by 9-12 all third 6-8 knees. first located posterior aspect medial plateau had single peak that occurred early stance phase. second central-posterior aspects lateral consisted coincident timing axial force late stance. found anterior cartilage-to-cartilage region double stresses. differences in location profile suggest menisci function carry load points gait cycle: meniscus consistently distributing only phase stance, both phases This approach can help identify abnormalities mechanics provide better understanding mechanical pathways leading post-traumatic osteoarthritis.