Der Unfallchirurg
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Failure of transpedicular bone-grafting in thoracolumbar burst-fractures has been proven. Possible reasons are insufficient disc-removal and difficult decortication of endplates. Methodical improvements are sought to make the procedure succeed in a sheep-model. ⋯ Reason for failure of the method seems to be the insufficient primary stability of the posterior instrumentation, since satisfactory disc-removal and decortication alone cannot successfully modify the method.