Prospective changes in the knee joint center of rotation relative to the contralateral knee and over time provide a comprehensive view of kinematic changes.

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Prospective changes in the knee joint center of rotation relative to the contralateral knee and over time provide a comprehensive view of kinematic changes following anterior cruciate ligament reconstruction M. Titchenal, C.R. Chu, T.P. Andriacchi Osteoarthritis and Cartilage Volume 23, Pages A96-A97 (April 2015) DOI: 10.1016/j.joca.2015.02.806 Copyright © 2015 Terms and Conditions

Figure 1. Medial-lateral and anterior-posterior position of the average knee COR of the contralateral and ACLR knees at nominal 2 year and 4 year follow-up after ACL reconstruction. Lateral and anterior directions are reported as positive values. *Indicates significant differences (P<0.05) for cross-sectional and/or longitudinal comparisons. Osteoarthritis and Cartilage 2015 23, A96-A97DOI: (10.1016/j.joca.2015.02.806) Copyright © 2015 Terms and Conditions

Figure 2. Correlation between changes in the anterior-posterior position of knee COR and changes in peak KFM from the nominal 2 year test to the 4 year follow-up. An anterior shift in COR over time is reported as a positive change in COR. Similarly, an increased KFM over time is reported as a positive change in KFM. Osteoarthritis and Cartilage 2015 23, A96-A97DOI: (10.1016/j.joca.2015.02.806) Copyright © 2015 Terms and Conditions