Araştırma Çıktıları

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Author: search.filters.author.Keskinoz, Elif NedretHas files: No

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    Early Onset of Atherosclerosis of The Carotid Bifurcation in Newborn Cadavers
    (PREMCHAND SHANTIDEVI RESEARCH FOUNDATION, 2016-01-01) Uslu, Bahar; Cakmak, Yusuf Ozgur; Sehirli, Umit; Keskinoz, Elif Nedret; Cosgun, Erdal; Arbak, Serap; Yalin, Aymelek
    Introduction: The anatomy of arterial bifurcations affects blood flow and has a significant role in the development of vascular disease. Therefore, it is important to know the structural characteristics of the Common Carotid Artery (CCA) and its branches for early onset of atherosclerosis in newborns. Aim: The present study was conducted to evaluate the characteristics of CCA in newborn cadavers. Materials and Methods: Eight carotid arteries obtained from newborn cadavers were used. The outflow to inflow area ratios was calculated to evaluate vessel diameters. Additionally, scanning electron and light microscopic investigations were conducted with tissue samples. The brachial artery of each cadaver was used as controls. Correlation between area ratios and atherosclerotic endothelial damage was determined. Results: Light microscopic investigations demonstrated that control group sections showed no positivity for Oil red O staining, while carotid bifurcation regions depicted widespread occurrence of intimal lipid accumulations. Scanning electron microscopic examination of control group sections presented regular endothelial topography, while carotid bifurcation region topography exhibited numerous blood cells and separated endothelial cells. Fibrin accumulation on endothelial surface in low area ratios was another important finding in the examination of its endothelial surface degeneration. The above-mentioned morphological findings seemed to be quite parallel to outflow to inflow area ratio data favouring low area and degeneration. Conclusion: The correlation between area ratios and the histological characteristic of cerebral vessels of newborn cadavers indicate that early stages of atherosclerosis began in early embryologic life.
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    Morphometric Analysis of the Inferior Vena Cava Related to Lumbar Vertebra and the Aortic Bifurcation on Multidetector Computed Tomography (MDCT)
    (SOC CHILENA ANATOMIA, 2016-01-01) Keskinoz, Elif Nedret; Salbacak, Ahmet; Akin, Duygu; Kabakci, Anil Didem Aydin; Yilmaz, Mehmet Tugrul; Cicekcibasi, Aynur Emine; Ozbek, Orhan
    Vascular structures are in greater danger during lumbar surgery. The purpose of this study is to describe the morphology of the inferior vena cava (IVC) related to the lumbar vertebra and aortic bifurcation (AB) and assessing the role of demographic values in these relations to decrease the risk of complications in the surgical interventions. The study was performed on Multidetector Computed Tomography (MDCT) images of 100 male and 100 female cases with an age range from 50 to 84 years. The morphometric values of the IVC obtained from the coronal, sagittal and the axial reformatted images were measured and compared with the demographic values. The distance from the IVC to the 1st lumbar vertebra (L1) and 2nd lumbar vertebra (L2) were measured as (26.5 mm and 18.1 mm) in males and (21.1 mm and 14.2 mm) in females with a high level of significance between genders
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    A comparison of EFECE systems with tension band wiring for patella fracture fixation in cadavers
    (BMC, 2020-01-01) Karadeniz, Emre; Keskinoz, Elif Nedret
    BackgroundEFECE systems are newly defined internal fixation systems, which are suitable for patella fracture fixation. The aim of this study was to compare the fixation strength of EFECE Systems with tension band wiring for transverse patellar fracture simulation on fresh frozen cadaver models.MethodsQuadriceps tendon-patella-patellar tendon (QT-P-PT) complex was prepared from human cadavers. After simulation of a transverse patella fracture, in group 1, 5 patella were fixed with a pair of 1.2mm EFECE wires and 4 EFECE devices. In group 2, 5 patella were fixed with a pair of 1.2mm Kirschner wires (K-wire) and a cerclage wire according to the tension band technique.Using a testing device with custom-made jaws, increasing distraction force was applied to these QT-P-PT complexes. Extension of these complexes with the distraction forces was observed. The maximum distraction force and the elongation during maximum force were evaluated.ResultsAfter 5 experiments with the EFECE systems, there was no EFECE wire breakage or EFECE wire-EFECE device catching failure. The median maximum force was 740N (720-810N). During maximum distraction force the median extension was 2.5mm (1.6-2.5mm). After 5 experiments with the tension band technique, there was no K-wire breakage. The median maximum force was 330N (240-510N). During this maximum distraction force the median extension was 3.4mm (2.2-3.8mm).ConclusionsBased on the biomechanical advantages, patella fracture treatment with EFECE systems may constitute a reasonable alternative in the treatment of patella fractures.