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Improvements in asymmetry in knee flexion motion during landing are associated with the postoperative period and quadriceps strength after anterior cruciate ligament reconstruction

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/86571

Title: Improvements in asymmetry in knee flexion motion during landing are associated with the postoperative period and quadriceps strength after anterior cruciate ligament reconstruction
Authors: Ishida, Tomoya Browse this author
Samukawa, Mina Browse this author →KAKEN DB
Suzuki, Makoto Browse this author
Matsumoto, Hisashi Browse this author
Ito, Yu Browse this author
Sakashita, Miku Browse this author
Aoki, Yoshimitsu Browse this author
Yamanaka, Masanori Browse this author
Tohyama, Harukazu Browse this author →KAKEN DB
Keywords: Landing
symmetry
knee extensor strength
return to sports
second injury
Issue Date: 18-Aug-2021
Publisher: Taylor & Francis
Journal Title: Research in sports medicine
Publisher DOI: 10.1080/15438627.2021.1966010
PMID: 34406086
Abstract: This study investigated the relationship between quadriceps strength and knee kinematics during a drop vertical jump (DVJ) at 6, 9 and 12 months after anterior cruciate ligament reconstruction (ACLR) in 9 male and 22 female athletes (16.6 +/- 2.1 years old). Isokinetic quadriceps strength was measured by a dynamometer (Biodex System 3). Knee flexion excursion was assessed using two-dimensional analysis. Knee flexion excursion at 6 months was significantly smaller in the involved limb than in the uninvolved limb independent of quadriceps strength (56.7 degrees +/- 9.3 degrees, 63.4 degrees +/- 11.4 degrees, P < 0.001). At 9 months, only the low quadriceps strength group demonstrated a similar interlimb difference (57.2 degrees +/- 12.3 degrees, 63.3 degrees +/- 10.5 degrees, P < 0.001). At 12 months, there was no significant interlimb difference in knee flexion excursion regardless of quadriceps strength. These findings indicate that restoration in symmetrical knee flexion excursion during a DVJ requires rehabilitation as well as quadriceps strength.
Rights: This is an Accepted Manuscript of an article published by Taylor & Francis in Research in Sports Medicine on 18 Aug 2021, available online: http://www.tandfonline.com/10.1080/15438627.2021.1966010.
Type: article (author version)
URI: http://hdl.handle.net/2115/86571
Appears in Collections:保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 寒川 美奈

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