Authors: Markus Schultheiss Erich Hartwig Michael Sarkar Lothar Kinzl Lutz Claes HansJoachim Wilke
Publish Date: 2005/02/04
Volume: 15, Issue: 1, Pages: 82-89
Abstract
Endoscopic minimally invasive techniques have become an established method of fracture stabilisation in the spine In view of this fact anterior stabilisation strategies must be reconsidered as monosegmental A 31 compression fractures are increasingly being stabilised endoscopically from the anterior aspect using minimally invasive techniques This study investigated the biomechanical necessity of anterior twopoint or fourpoint stabilisation in the instrumentation of mono and bisegmental fractures In three biomechanical in vitro studies burst fracture stabilisation was simulated and anterior short fixation devices were tested under load with pure moments up to 375 Nm to evaluate the biomechanical stabilising characteristics of different kinds of instrumentations in flexion/extension lateral bending and axial rotation Only anterior fourpoint stabilisation resulted in sufficient primary stability both in mono and bisegmental instrumentation and therefore represents the standard procedure in open as well as in minimally invasive spinal surgery
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