Yazar "Eksioglu, F." seçeneğine göre listele
Listeleniyor 1 - 5 / 5
Sayfa Başına Sonuç
Sıralama seçenekleri
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.Öğe Chondroitin sulfate-coated polyhydroxyethyl methacrylate membrane prevents adhesion in full-thickness tendon tears of rabbits(W B Saunders Co-Elsevier Inc, 2002) Güdemez, E.; Eksioglu, F.; Korkusuz, P.; Asan, E.; Gürsel, I.; Hasirci, V.Polyhydroxyethyl methacrylate (pHEMA) membranes coated on one side with chondroitin sulfate (CS) were used to block adhesion physically and to reduce friction between healing flexor tendons and the surrounding tissue in rabbit forepaws after surgical repair. Digits with pHEMA-only, standard tendon sheath repair, and with no sheath repair were the controls. Over 12 weeks the CS-coated membranes were evaluated for joint flexion, adhesion limitation, and tendon healing progress. The membranes initially allowed for better flexion (i.e, for 6 weeks), but their relative superior effectiveness faded afterward. Histology showed that adhesions were less severe and healing was better in the CS-pHEMA membranes at 3 and 6 weeks. If further studies determine precise amounts or thicknesses of CS coats that will maximize its healing properties, CS-pHEMA should prove useful in clinical settings in which restoration of tendon sheath integrity with a minimum of adhesions is not possible. Copyright (C) 2002 by the American Society for Surgery of the Hand.Öğe Innervation pattern of the abductor digiti minimi muscle of the hand(Churchill Livingstone, 2002) Gudemez, E.; Tekdemir, I.; Uslu, M.; Eksioglu, F.; Elhan, A.This cadaver study investigated the innervation patterns of the abductor digiti minimi in Guyon's canal. There was only one branch to the abductor digiti minimi in 22 of the 30 specimens. Two branches were found in three hands, and three branches in two. Three other variations were documented.Öğe Reliability of the safe area for the superior gluteal nerve(Lippincott Williams & Wilkins, 2003) Eksioglu, F.; Uslu, M.; Güdemez, E.; Atik, O.S.; Tekdemir, I.The authors investigated the reliability of the safe area, which previously was defined to prevent injury to the superior gluteal nerve during the lateral approach to the hip, and its relation to body height. The distance between the point of entry of the superior gluteal nerve into the gluteus medius muscle and the greater trochanter, in the regions which were defined as the anterior and posterior halves of the muscle, were measured in 23 cadaveric hips. There was a significant correlation between the height of the cadavers and the distance in the anterior and posterior regions. In all of the anterior regions and 78% of the posterior regions of the hips, the superior gluteal nerve as found to be in the safe area. The current study showed that the average distance between the innervation point of the gluteus medius muscle and the greater trochanter might change as a function of body height. The risk of damage to the superior gluteal nerve may be higher if the direct lateral approach to the hip is used. These data show that it is possible that the safe area is not always safe.Öğe Ultrasonographic findings in pediatric fractures(Turkish J Pediatrics, 2003) Eksioglu, F.; Altinok, D.; Uslu, M.M.; Gudemez, E.The aim of this study was to document and, analyze ultrasonographic (US) findings in different types of pediatric, fractures. Thirty-nine patients, aged between 1 and 14 years, with a fracture were included in the study. Patients were classified as complete or incomplete fractures. Greenstick fractures, torus fractures and plastic deformations were considered as incomplete fractures.. Ultrasonographic findings (subperiosteal hematoma, bending, cortical disruption, and reverberating echo) were analysed for each type of fracture. Subperiosteal hematoma was present in all patients in the study. Bending sign was present in all patients in the incomplete fracture group, but not present in complete fractures. Cortical disruption and reverberating echo were present in all patients with complete and greenstick fractures. In conclusion, whether the fracture is complete or incomplete, subperiosteal hematoma, together with a cortical disruption, bending sign, or reverberating echo shown on US. can confirm the fracture diagnosis in children.
