Patrick A Smith

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Computer simulation results are reported for the two-pomt matrix probablhty function Sz of two-phase random media composed of disks dlstrlbuted with an arbitrary degree of lmpenetrablhty I The novel techmque employed to sample SJr) (wiuch gives the probab&y of Iindmg the endpomts of a hne segment of length r In the matnx) IS very accurate and has a fast(More)
This study was conducted to assess the effects in trained cyclists of exhausting endurance cycle exercise (CE) on maximal isometric force production, surface electromyogram (EMG) and activation deficit (AD) of the knee extensors. Ten male subjects made four isometric maximal voluntary contractions (MVC) of the knee extensor muscles immediately prior (pre),(More)
The objectives of this study were to quantitatively determine the effects of subtalar arthrodesis on the planovalgus foot using three-dimensional (3-D) gait analysis and plantar pressure measurements. Twelve children and adolescents with planovalgus foot deformity secondary to spastic cerebral palsy participated in this outcome study. The pediatric(More)
Ankle foot orthoses (AFOs) are prescribed for ambulatory children with spastic diplegia to improve biomechanical alignment and functional capability. The purpose of this study was to employ quantitative motion analysis of the lower extremity to investigate two rehabilitative orthotics. The effects of hinged ankle foot orthoses (HAFO) and dynamic ankle foot(More)
We derive rigorous upper and lower bounds on the bulk and shear moduli of suspensions of spheres of variable penetrability distributed throughout a matrix (or fluid), for all possible phase property values, through second order in the sphere volume fraction ¢2' The bounds, at the very least, capture the salient qualitative features that come into play when(More)
No surgical technique recreates native posterior cruciate ligament (PCL) biomechanics. We compared the biomechanics of five different PCL reconstruction techniques versus the native PCL. Cadaveric knees (n = 20) were randomly assigned to one of five reconstruction techniques: Single bundle all-inside arthroscopic inlay, single bundle all-inside suspensory(More)
This study presents initial results from a bi-planar model used to investigate the neurological factors affecting balance deficits in children with diplegic cerebral palsy (CP). The model uses an inverted pendulum to describe sway in both the anteroposterior (AP) and mediolateral (ML) planes. The study presents Center of Pressure (COP) data from 17 children(More)
these cases the boundaries are transparent, and there are no externally incident radiation. The present study provides a simple, straightforward, and highly accurate method of analysis for the determination of angular distribution of radiation anywhere in the medium. As an independent check, the results are compared with those calculated with the F N method(More)
The Sta-Peg procedure is most effective in the non-rigid foot in which reasonable muscle balance can be attained. Where such balance cannot be attained or where rigid deformity exists, this procedure will not solve the problem and should not be used. The authors want to emphasize that this study pertains to the use of Sta-Peg in the valgus foot caused by(More)
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