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Title: Poor knee function after ACL reconstruction is associated with attenuated landing force and knee flexion moment during running.
Epworth Authors: Whitehead, Timothy
Other Authors: Perraton, Luke
Hall, Michelle
Crossley, Kay
Yong-Hao, Pua
Morris, Hayden
Culvenor, Adam
Bryant, Adam
Clark, Ross
Keywords: Anterior Cruciate Ligament Reconstruction
Hop Tests
Patient-Reported Knee Function
Vertical Ground Reaction Force
Knee Function Assessment
Landing Force
Knee Flexion
Knee Joint Loading Patterns
Musculoskeletal Clinical Institute, Epworth HealthCare, Victoria, Australia
Issue Date: Feb-2018
Publisher: Springer
Citation: Knee Surg Sports Traumatol Arthrosc. 2018 Feb; 26(2): 391-398
Abstract: PURPOSE: Poor knee function after anterior cruciate ligament reconstruction (ACLR) may increase the risk of future knee symptoms and knee osteoarthritis via abnormal knee joint loading patterns, particularly during high-impact activity. This study aimed to assess the relationship between poor self-reported or clinically measured knee function and knee moments/vertical ground reaction force (vGRF) in individuals following ACLR. METHODS: 61 participants (mean 16.5 ± 3 months following ACLR, 23 women) completed a patient-reported knee function questionnaire and three hop tests (% of uninvolved limb). Participants were divided into satisfactory and poor knee function groups (poor < 85% patient-reported knee function and/or < 85% hop test symmetry). The knee biomechanics of both groups were assessed with three-dimensional motion analysis during the stance phase of overland running at self-selected speeds, and the association between knee function and knee moments was assessed using analysis of covariance with running speed as a covariate. RESULTS: Participants with poor knee function (n = 30) ran with significantly smaller peak knee flexion moments (moderate effect size 0.7, p = 0.03) and significantly smaller peak vGRFs (large effect size 1.0, p = 0.002) compared to those with satisfactory knee function (n = 31). No significant differences were observed for knee adduction and knee external rotation moments or knee kinematics. CONCLUSION: Individuals following ACLR with poor self-reported knee function and/or hop test performance demonstrate knee moments during running that may be associated with lower knee joint contact forces. These findings provide greater understanding of the relationship between knee biomechanics during running and clinical assessments of knee function.
DOI: 10.1007/s00167-017-4810-5
PubMed URL:
ISSN: 0942-2056
Journal Title: Knee Surgery, Sports Traumatology, Arthroscopy
Type: Journal Article
Affiliated Organisations: Department of Physiotherapy, School of Primary Health Care, Monash University, Building B, McMahons Road, Peninsula campus, Frankston, VIC, 3199, Australia
Melbourne School of Physiotherapy, The University of Melbourne, Melbourne, Australia
School of Health and Sport Sciences, University of the Sunshine Coast, Sippy Downs, Australia
School of Allied Health, La Trobe University, Bundoora, Australia
Department of Physiotherapy, Singapore General Hospital, Singapore, Singapore
Institute of Anatomy Salzburg and Nuremburg, Paracelsus Medical University, Salzburg, Austria
Type of Clinical Study or Trial: Comparative Study
Appears in Collections:Musculoskeletal

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