PMID: 7008371Jan 1, 1980Paper

Long bone healing after transverse osteotomy under constant interfragmentary compression. Animal experiments (author's transl)

Wiener klinische Wochenschrift. Supplementum
G Pflüger

Abstract

The reaction of cortical contact areas, after osteotomy of a tubular bone, to a constant interfragmentary pressure has not been studied in exact terms so far because of lack of an adequate testing system. The present experimental study therefore examines the influence of various, but during the experiment constant, static pressures on the healing process of the cortical bone. Departing from the basic interrelation between fixation and interfragmentary compression (in the following briefly called: pressure) and from the resulting more or less limited mobility of the bone parts, following osteotomy, it appeared necessary to concentrate observation on either of the two parameters "fixation" or "pressure" alone. For this animal experiment a suitable external compression apparatus was developed so as to secure the application of a constant pressure. The present study contains construction drawings and data on the constructional assembly and integration of these newly developed compression apparatuses and pressure measuring devices. The compression apparatuses permit by variable spring configurations to produce pressures up to a maximum force of 1000 newton. To control the pressure exerted over a period of many weeks, a special measu...Continue Reading

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