Ground reaction forces are more sensitive gait measures than temporal parameters in rodents following rotator cuff injury

Journal of Biomechanics
A M PardesLouis J Soslowsky

Abstract

Gait analysis is a quantitative, non-invasive technique that can be used to investigate functional changes in animal models of musculoskeletal disease. Changes in ground reaction forces following injury have been observed that coincide with differences in tissue mechanical and histological properties during healing. However, measurement of these kinetic gait parameters can be laborious compared to the simpler and less time-consuming analysis of temporal gait parameters alone. We compared the sensitivity of temporal and kinetic gait parameters in detecting functional changes following rotator cuff injury in rats. Although these parameters were strongly correlated, temporal measures were unable to detect greater than 50% of the functional gait differences between injured and uninjured animals identified simultaneously by ground reaction forces. Regression analysis was used to predict ground reaction forces from temporal parameters. This model improved the ability of temporal parameters to identify known functional changes, but only when these differences were large in magnitude (i.e., between injured vs. uninjured animals, but not between different post-operative treatments). The results of this study suggest that ground reaction...Continue Reading

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Citations

Nov 3, 2016·Journal of Applied Physiology·George W FryhoferLouis J Soslowsky
Jul 1, 2020·Journal of Shoulder and Elbow Surgery·Zili WangBrian T Feeley
Oct 29, 2020·Annals of Biomedical Engineering·Pablo Blázquez-CarmonaEsther Reina-Romo

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