200 research outputs found
Augat Inc., which has a workforce of 190 employees at an electronic-connectors p
No full textAugat Inc., which has a workforce of 190 employees at an electronic-connectors plant in Sanford, will add 40 to 50 workers there after it closes an Illinois facility and moves its production to Maine. Augat, based in Mansfield, Mass., has 5,500 employees at 16 facilities in the U.S. and Singapore
Augat Inc., which has a workforce of 190 employees at an electronic-connectors p
No full textAugat Inc., which has a workforce of 190 employees at an electronic-connectors plant in Sanford, will add 40 to 50 workers there after it closes an Illinois facility and moves its production to Maine. Augat, based in Mansfield, Mass., has 5,500 employees at 16 facilities in the U.S. and Singapore
Ein Computermodel kann die verzögerte Frakturheilung bei interfragmentärer Scherbewegung gegenüber axialer Bewegung erklären
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Einfluss der Prüfbedingungen auf den Effekt einer winkelstabilen Verschraubung bei der Plattenosteosyntheses am distalen Humerus
No full textBiomechanical methods for the assessment of fracture repair
No full textThe progress of fracture healing is directly related to an increasing stiffness and strength of the healing fracture. Similarly the weight bearing capacity of a bone directly relates to the mechanical stability of the fracture. Therefore, assessing the progress of fracture repair can be based on the measurement of the mechanical stability of the healing fracture. However, fracture stability is difficult to assess directly due to various obstacles of which shielding of the mechanical properties by the fracture fixation construct is the most relevant one. Several assessment methods have been proposed to overcome these obstacles and to obtain some sort of mechanical surrogate describing the stability of the fracture. The most direct method is the measurement of the flexibility of a fracture under a given external load, which comprises the challenge of accurately measuring the deformation of the bone. Alternative approaches include the measurement of load share between implant and bone by internal or by external sensors. A direct 3 dimensional measurement of bone displacement is provided by radiostereometric analysis which can assess fracture migration and can detect fracture movement under load. More indirect mechanical methods induce cyclic perturbations within the bone and measure the response as a function of healing time. At lower frequencies the perturbations are induced in the form of vibration and at higher frequencies in the form of ultrasonic waves. Both methods provide surrogates for the mechanical properties at the fracture site. Although biomechanical properties of a healing fracture provide a direct and clinically relevant measure for fracture healing, their application will in the near future be limited to clinical studies or research settings.P. Augat, M. Faschingbauer, K. Seide, K. Tobita, S.A. Callary, L.B. Solomon, J.H. Holstei
Densitometrische Methoden zur quantitativen Beurteilung von pathologischen Knochenveränderungen
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