Journal article

Tibiofemoral Contact Forces in the Anterior Cruciate Ligament-Reconstructed Knee

David John Saxby, Adam L Bryant, Luca Modenese, Pauline Gerus, Bryce A Killen, Jason Konrath, Karine Fortin, Tim V Wrigley, Kim L Bennell, Flavia M Cicuttini, Christopher Vertullo, Julian A Feller, Tim Whitehead, Price Gallie, David G Lloyd



PURPOSE: To investigate differences in anterior cruciate ligament-reconstructed (ACLR) and healthy individuals in terms of the magnitude of the tibiofemoral contact forces, as well as the relative muscle and external load contributions to those contact forces, during walking, running, and sidestepping gait tasks. METHODS: A computational EMG-driven neuromusculoskeletal model was used to estimate the muscle and tibiofemoral contact forces in those with single-bundle combined semitendinosus and gracilis tendon autograft ACLR (n = 104, 29.7 ± 6.5 yr, 78.1 ± 14.4 kg) and healthy controls (n = 60, 27.5 ± 5.4 yr, 67.8 ± 14.0 kg) during walking (1.4 ± 0.2 m·s), running (4.5 ± 0.5 m·s) and sidestepp..

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Awarded by Australian National Health and Medical Research Council

Funding Acknowledgements

We acknowledge funding support for this research from the Australian National Health and Medical Research Council (to A. L. B., D. G. L., K. L. B., and F. M. C.) (grant 628850) and National Health and Research Council R.D Wright Biomedical Fellowship (to A. L. B.) and Principal Research Fellowship (to K. L. B.). David Saxby would like to acknowledge Griffith University for PhD scholarship and stipend awards as well as the International Society of Biomechanics for a PhD Matching Dissertation Grant. The authors would like to acknowledge Prof BJ Fregly of the University of Florida for contribution of Grand Challenge instrumented knee implant data (, as well as Dr.'s Alasdair Dempsey and Nicole Grigg for their contributions to data collection.