The Effect of Two Types of Foot Orthoses on the Knee Valgus Angle Within Single-Leg Landing: Implications for ACL Damage Hazard Decrease

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AuthorSeyed Ali Abbassi Khaboushanen
AuthorNahid Khoshraftar Yazdien
AuthorZahra Moein Afsharen
OrcidSeyed Ali Abbassi Khaboushan [0000-0003-1922-324X]en
Issued Date2022-12-31en
AbstractBackground: Non-contact anterior cruciate ligament (ACL) injuries commonly occur when athletes land in high risk positions such as knee valgus. The impact of foot orthoses during exercises that recreate a non-contact ACL harm system (i.e., landing) in any case will be obscured. Objectives: The purpose of the current study research was to evaluate the effect of two foot orthoses (semi-hard foot orthoses and hard foot orthoses) on knee valgus angle during single-leg drop landing. Methods: Twenty male leisure volleyball gamers performed landing in one-leg step from 30 cm height in 3 conditions (without foot orthoses, mid-hard foot orthoses, and hard foot orthoses). A motion capture system was used to measure lower extremity kinematics. Two risk factors of ACL injury, maximum knee valgus angle (KVA), and maximum knee flexion was measured. ANOVA was used for statistical analysis (P < 0.05). Results: With mid-hard foot, orthoses provide the maximum level of knee flexion and the minimum level of knee valgus during single-leg drop landing. Conclusions: It may be concluded showed that foot orthoses affect knee kinematics. More knee flexion and less knee valgus brought about by mid-hard foot orthoses can reduce injuries of the anterior cruciate ligament (ACL).en
DOIhttps://doi.org/10.5812/asjsm-122580en
KeywordNon-contacten
KeywordACLen
KeywordFoot Orthosesen
KeywordLandingen
KeywordThree Dimensional Kinematicsen
PublisherBrieflandsen
TitleThe Effect of Two Types of Foot Orthoses on the Knee Valgus Angle Within Single-Leg Landing: Implications for ACL Damage Hazard Decreaseen
TypeResearch Articleen

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Asian Journal of Sports Medicine