Examination of Kinematic Factors during Single Leg Squatting Associated with the Occurrence of Re-injury after Anterior Cruciate Ligament Reconstruction

Wataru Fukuda; Kenji Kawamura; Shigeki Yokoyama; Yusuke Kataoka; Noriyuki Gomi

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Examination of Kinematic Factors during Single Leg Squatting Associated with the Occurrence of Re-injury after Anterior Cruciate Ligament Reconstruction

VernacularTitle:前十字靱帯再建術後の再損傷発生に関連する片脚スクワット中の運動学的因子の検討
Author: Wataru FUKUDA ¹ ; Kenji KAWAMURA ² ; Shigeki YOKOYAMA ² ; Yusuke KATAOKA ³ ; Noriyuki GOMI ¹
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1. Department of Physical Therapy, The Taijukai Foundation（social medical corporation）Kaisei General Hospital
2. Graduate School of Health Science, Kibi International University
3. Faculty of Health Science, Kyoto Tachibana University
Keywords: anterior cruciate ligament; three dimensional motion analysis; secondary prevention
From:The Japanese Journal of Rehabilitation Medicine 2022;59(7):725-731
CountryJapan
Language:Japanese
Abstract: Objective：This study aimed to determine the difference in knee joint range of motion (ROM) and coefficient of variation (CV) during preoperative single-leg squatting in patients who developed ipsilateral lower limb anterior cruciate ligament (ACL) re-injury months after ACL reconstruction and in those who did not have the injury.Methods：Participants included 38 patients with non-contact ACL injuries. All patients underwent single-leg squatting the day before ACL reconstruction. Knee joint ROM and CV were assessed during single-leg squatting using a three-dimensional motion analysis system. We investigated the occurrence of ACL reinjury in the ipsilateral lower limb approximately 30 months after ACL reconstruction. Knee joint ROM and CV were then compared between the postoperative and non-injury groups.Results：The postoperative injury and non-injury groups included 9 and 29 patients, respectively. The knee internal/external rotation ROM and CV of knee varus/valgus ROM were greater in the postoperative injury group than in the postoperative non-injury group.Conclusion：During single-leg squatting before ACL reconstruction surgery, the knee internal/external rotation ROM and CV of knee varus/valgus ROM were suggested to be points of evaluation when considering ACL re-injury prevention.