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Biomedical subjects

G Sumner-Smith

Publications and source records attributed to G Sumner-Smith.

At least 37 records · Page 2Linked to original sources
PubMed1977

Telemetric measurements of strain in the metacarpus of the horse: a pilot study.

The advances made by the use of a telemetric system in the study of bone strain in a free-moving horse are reported. A rosette strain gauge was bonded to the craniomedial aspect of the metacarpus of the horse. Attachment of a miniature FM transmitter to lead wires facilitated telemetric transmission of of resistance changes which corresponded to limb movement. During 3 different gaits, the trace pattern remained similar, although frequency and amplitude varied. The tracings were similar to those reported in other species in which nontelemetric transmission was used.

Animals↗
PubMed1975

The effect of movement on the holding power of screws in bone.

Movement between screw threads and bone inhibits bone formation, revascularization and remodeling of dead bone. Movement causes the screw to become enveloped by fibrous tissue in response to necrosis and resorption of adjacent dead cortical bone. This results in a radiologically discernible radiolucent "halo" about the screw, a certain sign of screw loosening.

Animals↗
PubMed1975

The reaction of cortical bone to compression by screw threads.

Cortical bone subjected to compression by screw threads retains its integrity and is not resorbed. Screws which generate compression at the interface of their threads with bone can be expected to provide adequate fixation until bone union occurs.

Animals↗
PubMed1975

Methymethacrylate cement: its curing temperature and effect on articular cartilage.

The increasing use of methylmethacrylate in orthopedic surgery makes it desirable to determine whether the curing temperature of methylmethacrylate is high enough to cause bone necrosis and whether methylmethacrylate damages articular cartilage. Studies in dogs showed that methylmethacrylate plut temperatures ranged from 95 to 107degrees C and that temperatures at the cement-bone interface ranged from 50 to 95degrees. Curing temperatures therefore are high enough to cause necrosis of bone. Other studies revealed no harmful action of methylmethacrylate on articular cartilage. Fractures stabilized with methylmethacrylate can therefore be expected to heal provided the normal criteria of fracture management are fulfilled.

Animals↗
PubMed1971

Dyspnea.

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Anemia↗