Associations between patellofemoral joint cartilage T1ρ and T2 and knee flexion moment and impulse during gait in individuals with and without patellofemoral.

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Associations between patellofemoral joint cartilage T1ρ and T2 and knee flexion moment and impulse during gait in individuals with and without patellofemoral joint osteoarthritis H.-L. Teng, N.E. Calixto, T.D. MacLeod, L. Nardo, T.M. Link, S. Majumdar, R.B. Souza Osteoarthritis and Cartilage Volume 24, Issue 9, Pages 1554-1564 (September 2016) DOI: 10.1016/j.joca.2016.04.006 Copyright © 2016 Terms and Conditions

Fig. 1 (A) Laminar analysis was performed by dividing the patellar and trochlear cartilage into two equal layers. Red regions correspond to deep layer cartilage. Yellow regions correspond to superficial cartilage. (B) T1ρ map of the PFJ for a control subject without OA. Osteoarthritis and Cartilage 2016 24, 1554-1564DOI: (10.1016/j.joca.2016.04.006) Copyright © 2016 Terms and Conditions

Fig. 2 Sagittal plane knee moment curve during the stance phase of walking of a sample trial. Joint moment is expressed as external moment. Positive and negative values indicate knee flexion and extension moments, respectively. KFM impulse was calculated as the area under curve when sagittal plane knee moment is positive. Osteoarthritis and Cartilage 2016 24, 1554-1564DOI: (10.1016/j.joca.2016.04.006) Copyright © 2016 Terms and Conditions

Fig. 3 Scatter plots of trochlear cartilage T1ρ relaxation time (whole compartment) and peak KFM (A) and KFM impulse (B) with least-squares regression lines and equations for control and PFJ OA groups. Osteoarthritis and Cartilage 2016 24, 1554-1564DOI: (10.1016/j.joca.2016.04.006) Copyright © 2016 Terms and Conditions