Neuromuscular Training Improves Biomechanical Deficits at the Knee in Anterior Cruciate Ligament-Reconstructed Athletes

Christopher V. Nagelli, Samuel C. Wordeman, Stephanie Di Stasi, Joshua Hoffman, Tiffany Marulli, Timothy E. Hewett

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

OBJECTIVE: Athletes who return to sport after anterior cruciate ligament reconstruction (ACLR) demonstrate persistent biomechanical and neuromuscular deficits of the knee. There is limited evidence on what effect a neuromuscular training (NMT) program has on knee biomechanics in a cohort of athletes with ACLR. Therefore, the primary aim of this study was to quantify the effect of an NMT program on knee biomechanics in a cohort of ACLR athletes. Second, the post-training knee biomechanics were compared between the cohort of ACLR and control athletes. DESIGN: Cohort study. SETTING: Controlled laboratory setting. PARTICIPANTS: Eighteen athletes with ACLR and 10 control athletes. INTERVENTIONS: Neuromuscular training. MAIN OUTCOME MEASURES: Knee kinematics and kinetics during a double-limb jump-landing task. RESULTS: There were no significant interactions (P > 0.05) observed for the athletes with ACLR. However, there was a significant main effect of biomechanics testing session (P < 0.05) for knee flexion angle and moments; athletes with ACLR demonstrated greater knee flexion angle and lower knee flexion moment during the post-training biomechanics testing session. Post-training comparison between the ACLR and control athletes demonstrated no significant interactions (P > 0.05) between the groups. There was a significant main effect of group (P < 0.05) for knee frontal angle, as athletes with ACLR landed with greater knee adduction than the control athletes. CONCLUSIONS: Significant improvements in knee sagittal plane biomechanical measures were observed after the NMT program by the athletes with ACLR. In addition, post-training comparison of the ACLR and control groups demonstrates comparable knee biomechanics.

Original languageEnglish (US)
Pages (from-to)113-119
Number of pages7
JournalClinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine
Volume31
Issue number2
DOIs
StatePublished - Mar 1 2021

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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