Robert M. Greenwald

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The purpose of this study was to compare the dynamic impact response of braced and unbraced cadaveric wrists using a commercially available wrist guard. Twelve arms were harvested from six cadavers. Each pair of forearms, one with and one without a brace, were impacted using a modified guillotine-type drop fixture placed over a force platform. Using a(More)
The RCRA/Superfund Ground-Water Forum is a group of scientists representing EPA’s Regional Superfund Offices, committed to the identification and resolution of ground-water issues affecting the remediation of Superfund sites. Design of conventional ground-water extraction and injection (i.e., pumpand-treat) systems has been identified by the Forum as an(More)
OBJECTIVES The goals of the study were to measure the force applied to the lateral side of the knee by a valgus loading brace designed for patients with medial compartment osteoarthritis (OA) and to compare the varus moment at the knee during level gait with and without the brace. METHODS Five subjects diagnosed with medial compartment OA were fitted with(More)
Inversion sprains of the lateral ligaments of the ankle are one of the most common of all sporting injuries. While the strains in the anterior talofibular (ATFL) and calcaneofibular (CFL) ligaments have been measured in quasi-static conditions, the dynamic strains during an actual traumatic event have not been determined. The present investigation(More)
The electromyographic (EMG) activity of seven muscles of the trunk and lower extremity in five male masters level ski racers during a slalom turn in both alpine skiing and in-line skating was recorded using a telemetry system. Measurements were made on separate testing days using slopes commonly used in each activity (24 slope alpine skiing, 5 in-line(More)
The results of a comparative study of five aluminum and one wood baseball bats are presented. The study includes an analysis of field data, high-speed laboratory testing, and modal analysis. It is found that field performance is strongly correlated with the ballbat coefficient of restitution (BBCOR) and only weakly correlated with other parameters of the(More)
The RCRA/Superfund Ground-Water Forum is a group of scientists representing EPA’s Regional Superfund Offices, committed to the identification and resolution of ground-water issues affecting the remediation of Superfund sites. Design of conventional ground-water extraction and injection (i.e., pumpand-treat) systems has been identified by the Forum as an(More)
The popularity of alpine skis with large sidecuts has increased dramatically in the last few years. However, little scientific data exists regarding the effect of these skis on certain human factors. The purpose of this study was to compare three-dimensional knee joint motions during entire ski runs while skiing on two skis with a large difference in(More)
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