Yazar "Kalaycioglu, B." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Biomechanical comparison of plate-screw and screw fixation in medial tibial plateau fractures (Schatzker IV). A model study
    (2010) Cift, H.; Cetik, O.; Kalaycioglu, B.; Dirikoglu, M.H.; Ozkan, K.; Eksioglu, F.
    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 6.5. mm cancellous bone screws with a 16. mm 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. © 2010 Elsevier Masson SAS.
  • Küçük Resim
    Öğe
    Experimental stress analysis of an arbitrary geometry containing irregularly shaped hole
    (Wiley, 2019) Kalaycioglu, B.; Alshaya, A.; Rowlands, R.
    Stresses can significantly influence the mechanical integrity of engineering structures. Motivated by prevalence of members containing cutouts, the objective of this paper is to demonstrate ability to stress analyse a finite, complicated-shaped plate containing an asymmetrical, irregularly shaped hole. Combining the load-induced temperature information with analytical and numerical tools provides the independent stresses full field, including on edges of the plate and adjacent to the top load. In addition to utilising real, rather than complex, variables, the technique smooths the recorded information, evaluates individual stresses, and requires neither differentiating the measured data nor knowing the elastic properties. Results are supported by those from a finite element analysis, force equilibrium, and strain gages.