Biomedical subjects
Publications and source records attributed to J Montgomery.
Soft tissue contractures resulting from spasticity are a frequent sequella of traumatic head injuries. This article identifies rationale for the use of serial casting to manage these deformities, provides guidelines for cast fabrication and application, and reports the results of lower extremity casting on 42 head-injured adults at Rancho Los Amigos Hospital.
Positional feedback stimulation training and cyclical electrical stimulation were used in combination as a treatment for facilitating knee extension in hemiparetic patients. Forty adult hemiparetic patients who demonstrated minimal active control of their quadriceps femoris muscles were randomly assigned to control or study groups. The control patients received a program of physical therapy, and the study patients received the positional feedback stimulation training in addition to their therapy program. The stimulation training provided the patient with immediate auditory and visual feedback of his changing joint angle while he voluntarily extended his knee. When the patient reached a near maximal extension effort, electrical stimulation of the quadriceps femoris muscle was automatically triggered, completing the patient's available range of motion in extension. The stimulation training was supplemented with two hours of cyclical electrical stimulation daily. At the end of four weeks, analysis revealed a statistically significant increase in knee extension torque and active synergistic range of motion in the study group. No change was noted in their ability to extend their knees using isolated quadriceps femoris muscle control. This study suggests that positional feedback stimulation training is effective when used to augment a facilitation program for improving knee extension control in hemiparetic patients.
Thirteen strains of pathogenic leptospires were isolated from 12 of 91 horses; seven strains belonged to the Australis serogroup (serotype bratislava) with three, two and one strains belonging to the Icterohaemorrhagiae, Hebdomadis (serotype hardjo) and Autumnalis serogroups respectively. Using leptospires isolated from horses and others representing the known parasitic Leptospira serogroups, a sample of 650 mares' sera was tested for agglutinating antibodies. Antibodies were found in 89.1 per cent of sera. The predominant reaction was to serotype bratislava, strain S/1334/79, isolated in this study, antibodies to which were detected in 81.8 per cent of sera. It is suggested that serotype bratislava may be adapted to, and maintained by, the horse population in Northern Ireland.
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Peripheral blood lymphocytes obtained at 24-30 months after birth from a male with X-linked severe combined immune deficiency maintained in a gnotobiotic environment were characterized by T and B cell surface markers. A high proportion (55-80 percent) of circulating lymphocytes bore surface IgM as detected by direct immunofluorescence. A receptor for the activated C3 complement component was detected on 27-47 percent of his lymphocytes. Only 4-12 percent of the peripheral blood lymphocytes formed spontaneous rosettes with sheep erythrocytes (E-R). In general, no blastogenesis was detected in lymphocyte cultures stimulated with pokeweed mitogen or phytohemagglutinin although transient slightly positive responses to both mitogens were occasionally observed. Incubation of lymphocytes with bovine thymosin Fraction V did not increase the percentage of E-R nor induce lymphocyte blastogenesis in the presence of phytohemagglutinin.
The play behavior, defined as interaction with peers and objects, of five autistic children was systematically observed in four environments, i.e., a stark environment, a theraplay unit, a playroom, and an outside play deck. The preliminary results suggested that (1) with some children environment has little or no effect on their play behavior; (2) with multiple objects, autistic children frequently related to the objects rather than to their peers; (3) object play was most frequently at the manipulative stage and often included repetitive and negative behavior; (4) within a confined space with no objects present, autistic children frequently engaged in solitary repetitive behavior; and (5) within a confined space designed to facilitate a movement flow (theraplay), autistic children modeled and imitated and were involved in gross motor play together.
Initial and subsequent programs for the orthotic and surgical management of the post-stroke patient are outlined, particularly with regard to impairmant of the lower extremities in hemiplegic patients. New developmentsin functional electrical stimulation are described.
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