These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Effect of Sex and Ankle Brace Design on Knee Biomechanics During a Single-Leg Cut.
    Author: Ihmels WD, Seymore KD, Brown TN.
    Journal: Am J Sports Med; 2020 May; 48(6):1496-1504. PubMed ID: 32223652.
    Abstract:
    BACKGROUND: Despite success at preventing ankle sprain, prophylactics that restrict ankle plantarflexion motion may produce deleterious knee biomechanics and increase injury risk. PURPOSE: To determine if ankle prophylactics that restrict plantar- and dorsiflexion motion produce changes in knee biomechanics during a single-leg cut and whether those changes differ between sexes. STUDY DESIGN: Controlled laboratory study. METHODS: A total of 17 male and 17 female participants performed a single-leg cut with 4 conditions: Ankle Roll Guard (ARG), lace-up brace, nonelastic tape, and an unbraced control. Peak stance knee flexion, abduction, and internal rotation joint angle and moment; total knee reaction moment (TKM) and its components (sagittal, frontal, and transverse); and ankle plantarflexion and inversion range of motion (ROM) and peak stance joint moments were tested with a repeated measures analysis of variance to determine the main effect and interaction of condition and sex. RESULTS: Brace and tape restricted plantarflexion ROM as compared with ARG and control (all P < .001). With the brace, women had increased peak knee abduction angle versus ARG (P = .012) and control (P = .009), and men had decreased peak knee internal rotation moment as compared with ARG (P = .032), control (P = .006), and tape (P = .003). Although the restrictive tape decreased inversion ROM when compared with ARG (P = .004) and brace (P = .017), it did not change knee biomechanics. Neither brace nor tape produced significant changes in TKM or components, yet sagittal TKM increased with ARG versus control (P = .016). Women exhibited less ankle inversion ROM (P = .003) and moment (P = .049) than men, while men exhibited significantly greater frontal TKM (P = .022) and knee internal rotation moment with the ARG (P = .029), control (P = .007), and tape (P = .016). CONCLUSION: Prophylactics that restrict ankle plantarflexion motion may elicit knee biomechanical changes during a single-leg cut, but these changes may depend on prophylactic design and user's sex and may increase women's injury risk. CLINICAL RELEVANCE: Sex-specific ankle prophylactic designs may be warranted to reduce knee injury during sports.
    [Abstract] [Full Text] [Related] [New Search]