Browsing by Author "Bahadir S."

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    Environmental risk factors in pediatric psoriasis: A multicenter case-control study
    (2011) Özden M.G.; Tekin N.S.; Gürer M.A.; Akdemir D.; Doǧramaci Ç.; Utaş S.; Akman A.; Evans S.E.; Bahadir S.; Öztürkcan S.; Ikizoǧlu G.; Şendur N.; Köse O.; Bek Y.; Yayli S.; Cantürk T.; Turanl A.Y.
    To analyze the effect of possible risk factors, including breastfeeding, on the development of childhood-onset psoriasis, a multicenter case-control study with prospective collection of data was performed. Using a standard questionnaire, personal and specific variables including family history of psoriasis, maternal and environmental tobacco smoke exposure, body mass index (BMI), exclusive and partial breastfeeding for at least 3 and 12 months, cow's milk intake before 1 year, birth delivery method, and stressful life events were collected during 2009 from 537 patients with psoriasis and 511 controls younger than 18. Overall, patients more frequently reported exposure to environmental tobacco smoke at home and stressful life events in the year preceding the diagnosis than controls. The odds ratios (OR) for smoking and stressful life events were 2.90 (95% confidence interval [CI] = 2.27-3.78) and 2.94 (95% CI = 2.28-3.79), respectively. In addition, children with psoriasis were more likely to have a higher BMI (>26) than controls (OR = 2.52; 95% CI = 1.42-4.49). High BMI, environmental tobacco smoke exposure at home, and stressful life events may influence the development of pediatric psoriasis. © 2011 Wiley Periodicals, Inc.
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    MORPHOMETRY OF THE SUBAXIAL CERVICAL SPINE PEDICLES IN THE ANATOLIAN POPULATION
    (Galenos Publishing House, 2021) Sayin M.; Cingöz I.D.; Bahadir S.; Ayhan S.; Temiz C.
    Objective: Transpedicular screw fixation for the subaxial cervical spine is considered to be more stable than other posterior fixation techniques despite its technical challenges. Thorough understanding of cervical pedicle anatomy and morphometric parameters is essential to avoid neurovascular injury during screw placement. To evaluate subaxial cervical spine pedicle dimensions, screw starting points, and screw trajectories to provide data that might be representative of the entire Anatolian peninsula. Materials and Methods: This retrospective study included 200 patients (2000 cervical pedicles). The distance from the junction of the lamina and spinous process to the entry point (DEP), pedicle width (PW), pedicle maximum axis length (PAL), pedicle transverse angle (PTA) in the axial plane, and pedicle height (PH) in the sagittal plane were measured from C3 to C7 on computed tomography (CT) by two blinded observers. Results: The mean values for DEP, PW, PAL, PTA and PHA ranged between 22.92 mm-23.75 mm, 4.99 mm-6.26 mm, 28.24 mm-36.01 mm, 33.52°- 34.60° and 6.36 mm-7.03 mm, respectively. The PW significantly increased in the rostrocaudal direction. The PAL was significantly different between the right and left sides at C3 in male patients. The PTA was significantly different between the right and left sides at C3 in female patients. The PH was greater than the PW at all levels on both sides. Conclusion: Although surgical planning should be carried out on a case-by-case basis, the findings of the present study might be helpful for Turkish spine surgeons in decision-making for the accurate placement of cervical pedicle screws. © 2020 Journal of Turkish Spinal Surgery. All rights reserved.