Étude comparative biomécanique de l’ostéosynthèse par plaque vissée versus vis dans les fractures du plateau tibial médial de type Schatzker 4 - 17/05/10
, O. Cetik b, B. Kalaycioglu c, M.H. Dirikoglu c, K. Ozkan a, F. Eksioglu b
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Abstract |
Introduction |
The objective of this biomechanical study was to compare the respective efficiency of plate-screw fixation and screw fixation in an experimental model of a Schatzker type IV fracture.
Hypothesis |
Screw fixation and plate fixation have a similar load to failure.
Materials and methods |
This study compares the stability of Schatzker type IV medial tibial plateau fractures fixed with either three 6.5mm cancellous bone screws with a 16mm threaded segment or with six-holed buttress T plate-screw system. A Schatzker type IV fracture was modeled on an artificial bone model. In a first group of 10 fracture models, following the anatomical reduction, fractures were stabilized with screws with washers. In the second group of 10 fracture models, fractures were stabilized with T plate. After fixation, ascending axial compression was applied on bone models (Instron machine).
Results |
Load bearing capacity was 1397.6±194.4 in group I and 2153.2±204.4 in group II. The difference between two groups were statistically significant (p<0.001).
Discussion |
According to this result, experimental load bearing of bone models indicates that plate-screw fixation system has a significantly higher stabilization capacity than fixation with three screws alone. Our hypothesis was not confirmed. In order to maintain anatomical repositioning, the plate-screw system is a more stable fixation method than the screw in medial tibial plateau fractures of Schatzker type IV.
Il testo completo di questo articolo è disponibile in PDF.Keywords : Medial tibial plateau fractures, Bone model, Biomechanical test, Fixation
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 | Cet article peut être consulté in extenso dans la version anglaise de la revue Orthopaedics & Traumatology: Surgery & Research sur Science Direct (sciencedirect.com) en utilisant le DOI ci-dessus. |
Vol 96 - N° 3
P. 313-314 - maggio 2010 Ritorno al numero
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