Acute biomechanical effects of a functional knee brace and medial arch support on anterior cruciate ligament (ACL) deficient knee in drop-landing

Yu Hin TSE, Kam Ming MOK, Yau Keung CHAN, Patrick Shu Hang YUNG*

*Corresponding author for this work

Research output: Other Conference ContributionsConference Paper (other)Other Conference Paperpeer-review

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Abstract

Introduction: Team ball-sports involved repeated landings have a high incidence of non-contact ACL injuries. However, the correlation between orthoses, ACL deficient knee, and drop-landing has not been detailly clarified. Therefore, this study investigates the acute biomechanical effects of a functional knee brace and medial arch support on ACL deficient knees in drop-landing.

Methods: 10 recreational athletes with non-operated ACL deficient knees were recruited. Subjects were provided a functional knee brace and 2 different pairs of insoles and they were instructed to have 20 dynamic drop-landing trials from a 0.4 m height for 4 testing conditions. Biomechanical data were captured and a one-way analysis of variance was conducted.

Results: Significant differences were found in maximum knee valgus moment, knee flexion at initial contact, and minimum knee flexion. Subjects in control group had the greatest knee valgus moment and less knee flexion while the smallest knee valgus moment and more knee flexion were spotted in subjects with the orthotic interventions involved the functional knee brace in drop-landings.

Discussion and Conclusion: The functional knee brace could reduce the potential of suffering non-contact ACL injury and offer additional stability to the ACL impaired knee. However, insoles with medial arch support did not show a significant influence on the landing parameters. Therefore, a functional knee brace is suggested for patients with ACL deficient knees when they play sports involved drop-landings. It may lower their potential of having a second ACL trauma or subsequent injury and eliminate the physical burden to the injured ACL.
Original languageEnglish
Publication statusPublished - 4 Nov 2023
EventThe Hong Kong Orthopaedic Association 43rd annual congress: Hip and Knee Origins and Advances -
Duration: 4 Nov 20235 Nov 2023
http://hkoa.org/HKOA43/

Public Lecture

Public LectureThe Hong Kong Orthopaedic Association 43rd annual congress: Hip and Knee Origins and Advances
Period4/11/235/11/23
Internet address

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