en آسیب شناسی ورزشی و حرکات اصلاحی Sport injury and corrective exercises پژوهشي Research <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><b>Background</b>: ACL reconstruction is known as the standard treatment for restoring knee joint function, but undergo this surgery<b> </b>shows deficits in sensorimotor control that often impair movement coordination of the lower limb.<br> <b>Objectives</b>: The study aimed to investigate the coordination and coordination variability of lower limb joints during single-leg stance in individuals with ACL reconstruction.<br> <b>Methods</b>: The study analyzed 24 participants: 12 with right ACL reconstructions using hamstring auto -grafts (12-16 months&#39;&nbsp; post-surgery) and 12 healthy controls, all of the same gender and aged 20&ndash;37. Kinematic variables of lower limb joints were recorded using eight motion analysis cameras (250 Hz). Inter-joint coordination and coordination variability were examined using the Continuous Relative Phase (CRP) method across different phase planes involving angular velocity, acceleration, and jerk for the ankle, knee, and hip joints in the anterior-posterior direction.<br> <b>Results</b>: ACL-reconstructed individuals showed higher hip-ankle joint coordination in angular velocity (p=0.004) indicating a reduction in coordination between these joints. and reduced coordination variability in hip-knee (all phase planes) and knee-ankle joints (velocity-acceleration and jerk-acceleration phase planes) compared to the healthy group (p<0.05).&nbsp;<br> <b>Conclusions</b>: Altered movement patterns in individuals with ACL reconstruction could increase re-injury risk. Thus, it is necessary to design optimal rehabilitation protocols for these individuals.</span></span></span></div> ACL reconstruction, Single Leg Stance, Coordination, Coordination Variability 0 0 http://ptj.uswr.ac.ir/browse.php?a_code=A-10-714-1&slc_lang=en&sid=1 Leila Ghazaleh L.ghazaleh@alzahra.ac.ir 0000-0002-5228-2703 No Department of Exercise Physiology, Faculty of Sport Sciences, Alzahra University, Tehran, Iran Banafsheh Mohammadi bmohammadi290@gmail.com 0000-0001-9951-2265 Yes Department of sport sciences, Faculty of Literature and Humanities, Shahrekord University, Shahrekord, Iran Maede Alavikiaa maalavikia@yahoo.com 0000-0002-7971-3905 No Department of Biomedical Engineering Biomechanics, Amirkabir University of Technology, Tehran, Iran Peyman Aghaei Ataabadi Peymanaghaiee@ut.ac.ir 0000-0003-0719-455X No Department of Sports Injury and Biomechanics, Faculty of Sport Sciences and Health, University of Tehran, Tehran, Iran. Seyyed Morteza Kazemi morteza@sbmu.ac.ir 0000-0003-3631-1305 No Bone, Joint And Related Tissues Research Center Akhtar Hospital , Shahid Beheshti University Of Medical Sciences, Tehran, Iran. Nader Farahpour naderfarahpour1@gmail.com 0000-0002-5883-7845 No Department of Sport Biomechanics, Faculty of Sports Sciences, Bu-Ali Sina University, Hamedan, Iran