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RISS 인기검색어
- 검색키워드
- 저자 : Koray Ur (검색결과 4 건)
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Demiroz, Serdar,Ur, Koray,Bengu, Aydin Sukru,Ulucan, Aykut,Atici, Yunus,Erdogan, Sinan,Cirakli, Alper,Erdem, Sevki The Korean Neurosurgical Society 2020 Journal of Korean neurosurgical society Vol.63 No.2
Objective : To evaluate the neuroprotective effects of lacosamide after experimental peripheral nerve injury in rats. Methods : A total of 28 male wistar albino rats weighing 300-350 g were divided into four groups. In group I, the sciatic nerve exposed and the surgical wound was closed without injury; in group II, peripheral nerve injuries (PNI) was performed after dissection of the nerve; in group III, PNI was performed after dissection and lacosamide was administered, and in group IV, PNI was performed after dissection and physiological saline solution was administered. At 7 days after the injury all animals were sacrificed after walking track analysis. A 5 mL blood sample was drawn for biochemical analysis, and sciatic nerve tissues were removed for histopathological examination. Results : There is low tissue damage in lacosamide treated group and antioxidant anzymes and malondialdehyde levels were higher than non-treated and placebo treated group. However there was no improvement on clinical assessment. Conclusıon : The biochemical and histological analyses revealed that lacosamide has neuroprotective effect in PNI in rats. This neuroprotective capacity depends on its scavenger role for free oxygen radicals by increasing antioxidant enzyme activity.
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Serdar Demiroz,Ismail Emre Ketenci,Hakan Serhat Yanik,Samet Bayram,Koray Ur,Sevki Erdem 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.4
Study Design: Retrospective study. Purpose: This study aimed to determine the incidence of intraspinal pathologies (ISPs) in individuals with Scheuermann’s kyphosis (SK) and to validate whether the routine use of magnetic resonance imaging (MRI) is necessary for preoperative evaluation. Overview of Literature: There are several studies on the necessity of routine MRI screening and prevalence of ISPs related to different types of scoliosis have been conducted. However, despite the well-established association between ISPs and a higher risk for neurological complications there is no any study on the scientific literature concerning the prevalence of ISPs in patients with SK has been conducted. Methods: The database of the institution was retrospectively reviewed to identify all patients diagnosed with SK who underwent surgery between 2012 and 2015. Patients were excluded from the study if their hospital database records did not include spinal images, which are routinely collected before surgery. The presence or absence of ISPs, as indicated on magnetic resonance images, was evaluated by a radiologist. Results: Of the 138 potential participants, 120 were included in the study. Of these, seven patients (5.8%) had ISPs, and all the cases involved syringomyelia. None of the seven patients with ISPs required additional neurosurgical procedures before corrective surgery. No complications were reported during the perioperative period, and none of the patients developed postoperative neurological deficits. Conclusions: According to this study, the incidence rate of ISPs in patients with SK was 5.8%, and we recommend that all patients with SK should be evaluated using MRI of the spine before corrective surgery.
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Four flap suspension technique for prevention of bottoming out after breast reduction
Yuksel Kankaya,Melike Oruc,Nezih Sungur,Ozlem Colak Aslan,Koray Gursoy,Kadri Ozer,U?ur Kocer 대한외과학회 2015 Annals of Surgical Treatment and Research(ASRT) Vol.90 No.1
Purpose: Bottoming-out deformity is accepted as the most important disadvantage of inferior pedicle breast reduction. For prevention of this deformity, different techniques are used in combination with inferior pedicle. In this study, we aimed to prevent bottoming-out deformity by producing an internal bra effect through combination of inferior pedicle technique with 2 superior and 2 inferior dermal flaps that were raised from each side of the pedicle. Methods: Thirteen patients whose medical records became available during the follow-up period at Ankara Training and Research Hospital from January 2010 to January 2015 were included in this study. We retrospectively obtained patient medical records including demographic characteristics and clinical data. Superior dermal flaps were planned on both sides of the pedicle 2 cm inferior to the lower border of areola and inferior dermal flaps were planned 6 cm inferior to the superior dermal flaps. The superior and inferior dermal flaps were secured to the periosteum of the 2nd and 4th ribs respectively with permanent sutures. Results: Preoperatively, the average distance between the inframammary fold and areola was 13.9 cm (range, 11–18 cm). The average amount of breast parenchymal resection was 745 g (range, 612–1,496 g). The average distance between the inframammary fold and the lower border of the areola was 7.9 cm (range, 7.5–9 cm) on the postoperative first-year measurements. Conclusion: In conclusion, according to our study, suspension technique to prevent bottoming-out deformity is associated with an easier technique without the need for alloplastic or allogenic materials. Since fixation is performed to the ribs instead of soft tissues like the pectoral fascia or muscle, we believe that this fixation is more long lasting and can be an effective alternative to other suspension techniques.
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Özlem Çolak Aslan,Yüksel Kankaya,Nezih Sungur,Kadri Özer,Koray Gürsoy,Kemal Şerbetçi,Uğur Koçer 대한성형외과학회 2019 Archives of Plastic Surgery Vol.46 No.3
Background The management of flexor tendon injuries has evolved in recent years through industrial improvements in suture materials, refinements of repair methods, and early rehabilitation protocols. However, there is no consensus on the ideal suture material and technique. This study was conducted to compare the tensile strength, repair time, and characteristics of 4-strand cruciate, modified Kessler, and 4-strand horizontal intrafiber barbed sutures for flexor tenorrhaphy with a 12-mm suture purchase length in an animal model. Methods The right third deep flexors of 60 adult Leghorn chicken feet were isolated and repaired with a 12-mm suture purchase length. The tendons were randomly assigned to three groups of equal number (n=20 each). Groups 1 and 2 received 4-strand cruciate and modified Kessler repair with conventional suture materials, respectively. A 4-strand horizontal intrafiber barbed suture technique was used in group 3. The repaired tendons were biomechanically tested for tensile strength, 2-mm gap resistance, and mode of failure. Repair times were also recorded. Results The maximum tensile strength until failure was 44.6±4.3 N in group 1, 35.7±5.2 N in group 2, and 56.7±17.3 N in group 3. The barbed sutures were superior to the other sutures in terms of the load needed for 2-mm gap formation (P<0.05). Furthermore, the barbed sutures showed the shortest repair time (P<0.05). Conclusions This study found that 4-strand horizontal intrafiber barbed suture repair with a 12-mm purchase length in a chicken flexor tendon injury model showed promising biomechanical properties and took less time to perform than other options.
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