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Articular Contact Motion at the Knee During Daily Activities by Lucas T. Thomeer; Shanyuanye Guan; Hans A. Gray; Marcus G. Pandy is a Medicine article available to read on EtoBox.

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## Abstract We combined mobile biplane X‐ray imaging and magnetic resonance imaging to measure the regions of articular cartilage contact and cartilage thickness at the tibiofemoral and patellofemoral joints during six functional activities: standing, level walking, downhill walking, stair ascent, stair descent, and open‐chain (non‐weight‐bearing) knee flexion. The contact centers traced similar paths on the medial and lateral femoral condyles, femoral trochlea, and patellar facet in all activities while their locations on the tibial plateau were more varied. The translations of the contact centers on the femur and patella were tightly coupled to the tibiofemoral flexion angle in all activities (r^2^ > 0.95) whereas those on the tibia were only moderately related to the flexion angle (r^2^ > 0.62). The regions of contacting cartilage were significantly thicker than the regions of non‐contacting cartilage on the patella, femoral trochlea, and the medial and lateral tibial plateaus in all activities (p < 0.001). There were no significant differences in thickness between contacting and non‐contacting cartilage on the medial and lateral femoral condyles in all activities, except open‐c

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Author

Lucas T. Thomeer; Shanyuanye Guan; Hans A. Gray; Marcus G. Pandy

Publisher

Wiley

Published

2021

Language

EN

Field

Medicine (Health Sciences)