[Definition of pedicle malposition. Primary stability and loosening characteristics of pedicle screws in relation to position: spongious anchoring, cortical anchoring, perforation and malposition].

Abstract

Totally misplaced pedicle screws will lead to major stability problems. There are no publications about the stability behavior of screws, which have no pure trabecular position and perforate the pedicle slightly. Since neurological problems are only described with screws perforating the pedicle medially by at least 4 mm, this question has great relevance… (More)

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