Biomedical subjects
Publications and source records attributed to R B Greer.
Power take-off injuries are uncommon, but serious and potentially fatal. Seven cases are reported demonstrating the violent trauma that can be incurred. The danger associated with use of machines with this and other power equipment is emphasized. Safety shields should be improved, and operators educated about the importance of retaining the shields and using machinery properly at all times.
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An 11-year-old girl with splastic quadriplegia, and immobilization atrophy developed a stress fracture of the calcaneus, are rare cause of heel pain in children. There was complete remission of symptoms with healing of the fracture.
A study of the records from the period 1950 to 1970 at the Elizabethtown Hospital for Children and Youth produced twelve patients with the Guillain-Barré syndrome. These patients were contracted in 1975-76 and each was personally examined. Ten were found to have residual weakness but in several instances the weakness was so mild the patient was unaware of it. Good correlations were found between muscle examinations during the acute recovery period and at final follow-up. Six patients had undergone various surgical procedures, and all of them thought they had benefited.
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Rabbit synovial cells (SC), articular chondrocytes (AC), and epiphyseal (EC) chondrocytes were grown in vitro. A portion of the spectrum of human pathogenic viruses infective for the cells was determined. Responses of the cells to different viruses or a chemical inducer of interferon varied, with EC responding vigorously and with high titers, AC responding only to chemical inducer and influenza virus, and SC producing no detectable interferon. All cells supported prolonged growth of influenza virus without showing microscopic cytopathology.
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