title: Model to estimate hamstrings behavior in cerebral palsy patients: as a pre-surgical clinical diagnosis tool.
abstract: Crouch gait is the most common motion abnormality in children with cerebral palsy (CP). This paper presents a new biomechanical model based on a simple rescaling and adjustment to CP patients who develop crouch gait by subject-specific anthropometric data. The model estimates the length of hamstrings, as the distance between the origin and insertion of the muscle, and the velocity of shortening of hamstrings by the first derivative of the length with respect to time. This model has the potential to increase the benefits of three-dimensional biomechanical models as it can discriminate between short, spastic or normal hamstrings. The main advantage of this model in clinical use is that it does not require costly magnetic resonance imaging.
authors.affiliation: Biomechanics Laboratory of Faculty of Engineering, National University of Entre Ríos, Oro Verde, 3101, Entre Ríos Argentina.
authors.forename: Emiliano Pablo
authors.initials: EP
authors.lastname: Ravera
authors.forename: Marcos Jose
authors.initials: MJ
authors.lastname: Crespo
authors.forename: Paola Andrea
authors.initials: PA
authors.lastname: Catalfamo
authors.forename: Ariel Andres
authors.initials: AA
authors.lastname: Braidot
mesh_terms: D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena / Q000502:physiology; D002547:Cerebral Palsy / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery*; D002648:Child; D005684:Gait / Q000502:physiology; D006801:Humans; D008959:Models, Neurological; D018482:Muscle, Skeletal / Q000503:physiopathology*; D055815:Young Adult