Page 78 - Demo

Chapter 476AbstractBackground: It is unclear how rotational and translational lower limb kinematics relate to self-reported knee function and psychological readiness in anterior cruciate ligament reconstructed individuals. Purpose: The purpose of this study was to evaluate the strength and direction of the correlation between objective lower limb kinematics, range of tibial rotation (rTR) and anterior tibial translation (ATT), and patient reported knee function and psychological readiness to return to sports during low and high demanding functional tasks after an anterior cruciate ligament reconstruction (ACLR).Study design: Cross-Sectional StudyMethods: 3D motion analyses were conducted in seven subjects, one year after ACLR. The subjects performed a low demanding functional task (level walking) and two high demanding functional tasks (single leg hop and a side jump), to investigate the lower limb kinematics (rTR and ATT) of the reconstructed knee. Pearson’s correlation coefficients were calculated to determine the correlation between the amount of tibial rotation and translation and score on the International Knee Documentation Committee (IKDC) and ACL-Return to Sports after Injury (ACL-RSI) questionnaires.Results: Large to very large positive correlations were found between rTR and the IKDC and ACL-RSI scores during high demanding tasks. Negative correlations were found between rTR and the IKDC and ACL-RSI scores during a low demanding task. Negative correlations were found between ATT and the IKDC and the ACL-RSI scores during both high and low demanding tasks. Conclusion: Knee kinematics are strongly correlated to self-reported knee function and psychological readiness after ACL reconstruction. The closer the knee kinematics are to the natural knee kinematics of an intact knee, the better the self-reported knee function and psychological readiness. Measuring rTR during high demanding tasks could potentially expose Mark Zee.indd 76 03-01-2024 08:56