2 Orthopädische Klinik der MHH im Diakoniekrankenhaus Annastift, Anna-von-Borries-Straße 1-7, 30625 Hannover-Kleefeld. Germany
3 Orthopädische Klink der Medizinischen Hochschule Hannover, Labor für Biomechanik und Biomaterialien, Anna-von-Borries-Str. 1-7, 30625 Hannover, Germany
The aim of this study was to examine resistance to angulation and displacement of the internal fixation of a proximal first metatarsal lateral displacement osteotomy, using a locking plate system compared with a conventional crossed screw fixation.
Materials and Methodology:
Seven anatomical human specimens were tested. Each specimen was tested with a locking screw plate as well as a crossed cancellous srew fixation. The statistical analysis was performed by the Friedman test. The level of significance was p = 0.05.
We found larger stability about all three axes of movement analyzed for the PLATE than the crossed screws osteosynthesis (CSO). The Friedman test showed statistical significance at a level of p = 0.05 for all groups and both translational and rotational movements.
The results of our study confirm that the fixation of the lateral proximal first metatarsal displacement osteotomy with a locking plate fixation is a technically simple procedure of superior stability.
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