The short-term effects of running on the deformation of knee articular cartilage and its relationship to biomechanical loads at the knee M. Boocock,

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Presentation transcript:

The short-term effects of running on the deformation of knee articular cartilage and its relationship to biomechanical loads at the knee M. Boocock, P. McNair, F. Cicuttini, A. Stuart, T. Sinclair Osteoarthritis and Cartilage Volume 17, Issue 7, Pages 883-890 (July 2009) DOI: 10.1016/j.joca.2008.12.010 Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 1 Position and angle of the scanning plane. Osteoarthritis and Cartilage 2009 17, 883-890DOI: (10.1016/j.joca.2008.12.010) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 2 Sagittal plane MRI scan showing segmentation of the femoral and tibial cartilage. Osteoarthritis and Cartilage 2009 17, 883-890DOI: (10.1016/j.joca.2008.12.010) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 3 Schematic showing the muscle model of the knee. A positive external knee moment (Mk) is balanced by a force generated via the patella tendon (Fp) and a negative muscle moment by the biceps femoris (Fb). dp=muscle moment arm of the patella tendon. db=muscle moment arm of the biceps femoris. Fzk=knee joint reaction force aligned along the z axis of the tibia. Fyk=knee joint reaction force aligned along the y axis of the tibia. αk=knee joint angle. Osteoarthritis and Cartilage 2009 17, 883-890DOI: (10.1016/j.joca.2008.12.010) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 4 Percentage changes in medial and lateral femoral and tibial cartilage volume following sitting (30min) and running (5000 steps). Osteoarthritis and Cartilage 2009 17, 883-890DOI: (10.1016/j.joca.2008.12.010) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 5 Predicted maximum femoral and tibial (medial, lateral, total) compression stress during the right foot stance phase of the running gait. Osteoarthritis and Cartilage 2009 17, 883-890DOI: (10.1016/j.joca.2008.12.010) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions