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1982
Conference Paper
Titel
Stress distributions in fractures generated by bone plates.
Alternative
Messung der durch Knochenplatten in Frakturen erzeugten Druckverteilung
Abstract
The stress distributions in bone models compressed by bone plates (DCP) are investigated. Using plane photoelastic models without fracture it is shown that straight as well prebent plates generate stresses which change from compression to tension over the cross-section of the model. As a consequence in a similar, however, fractured model a partial opening of the fracture is observed. These findings are confirmed by measuring the pressure distributions in the fracture in a more realistic tube model. Depending on the torque of the screws and the prebending different contact areas from a very small portion up to 70% of the whole cross section at maximum are achieved. These results could explain the irregular formation of callus often observed during the healing process.