Experts recently identified 49 joint motion patterns in children with cerebral palsy during a Delphi consensus study. Pattern definitions were therefore the result of subjective expert opinion. The present study aims to provide objective, quantitative data supporting the identification of these consensus-based patterns. To do so, statistical parametric mapping was used to compare the mean kinem...

Children with crouch gait frequently walk with improved knee extension during the terminal swing and stance phases following hamstrings lengthening surgery; however, the mechanisms responsible for these improvements are unclear. This study tested the hypothesis that surgical lengthening enables the hamstrings of persons with cerebral palsy to operate at longer muscle-tendon lengths or lengthen ...

BACKGROUND Children with Down syndrome (DS), who are likely to suffer from a large number of musculoskeletal problems, tend to have a unique pattern of walking in clinical settings. Despite such apparent uniqueness, few studies have empirically investigated gait development pattern in DS children, especially at an earlier age. We therefore conducted gait analysis in young DS children who are pr...

A technique for analyzing and comparing the dynamic properties of electromyographic (EMG) patterns collected during gait is presented. A gait metric is computed, consisting of both magnitude (amplitude) and phase (timing) components. For the magnitude component, the processed EMG pattern is compared to a normative EMG pattern obtained under similar walking conditions, where the metric is increm...

Evolution of the Monkey Crouch T. PFAU ET AL. (“MODERN RIDING STYLE IMPROVES HORSE RACING times,” Brevia, 17 July, p. 289) nicely document the effectiveness of the “monkey crouch” riding style on race times and horse-jockey biomechanics. This style produced measurable speed benefits to winning race times at the English Epsom Derby Stakes (1900–1910). The change in riding style across a decade o...