Simulations of individuals with cerebral palsy who walk in a crouch gait . These simulations were used in analyses of (1) contributions to mass center accelerations, (2) impacts of muscle weakness, (3) magnitudes of tibiofemoral contact forces, and (4) evaluations of ankle foot orthoses during crouch gait. Downloads provide all supporting files for OpenSim simulations. Please see accompanying publications for more information.
This research examined the dynamics of crouch gait among children with cerebral palsy . Specifically, our work examined individual muscles contribute to joint and mass center movement in children with cerebral palsy who walk with a crouch gait. In 2010, we created simulations of single-limb stance for 10 subjects with a mild crouch gait. In 2012-2013, we expanded this study to evaluate muscle contributions to gait during mild, moderate, and severe crouch gait. We also used these simulations to evaluate how muscle weakness may contribute to crouch gait and to examine knee contact force during crouch gait. In 2017, these simulations were also used to evaluate how passive or powered ankle foot orthoses may assist during crouch gait. Together this research has helped us understand the mechanisms that contribute to crouch gait and guide treatment planning to improve gait for children with cerebral palsy.
Please visit the Neuromuscular Biomechanics Lab and the Ability & Innovation Lab to learn more about our on-going research in this area.
This project provides three download packages that provide the files for creating and analyzing simulations of children with cerebral palsy and crouch gait. This work represents analyses from five publications:
Steele, KM., et al. "Muscle contributions to support and progression during single-limb stance in crouch gait." Journal of biomechanics 43.11 (2010): 2099-2105.
Steele, KM., et al. "Compressive tibiofemoral force during crouch gait." Gait & posture 35.4 (2012): 556-560.
Steele, KM., et al. "How much muscle strength is required to walk in a crouch gait?." Journal of biomechanics 45.15 (2012): 2564-2569.
Steele, M., et al. "Muscle contributions to vertical and fore-aft accelerations are altered in subjects with crouch gait." Gait & posture 38.1 (2013): 86-91.
Rosenberg, M & Steele, KM. "Simulated impacts of ankle foot orthoses on muscle demand and recruitment in typically-developing children and children with cerebral palsy and crouch gait " PLOS One (2017).
The OpenSim software is not included in these downloads and is required for running or analyzing the simulations. Please see https://opensim.stanford.edu for more information on OpenSim.