Browsing by Author "Avci, Emel"

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    Anatomy of Meckel's Cave and the Trigeminal Ganglion: Anatomical Landmarks for a Safer Approach to Them
    (TURKISH NEUROSURGICAL SOC, 2012-01-01) Arslan, Mehmet; Deda, Haluk; Avci, Emel; Elhan, Alaittin; Tekdemir, Ibrahim; Tubbs, R. Shane; Silav, Gokalp; Yilmaz, Erdal; Baskaya, Mustafa Kemal
    AIM: Surgical approaches to Meckel's cave (MC) are often technically difficult and sometimes associated with postoperative morbidity. The relationship of surgical landmarks to relevant anatomy is important. Therefore, we attempted to delineate quantitatively their anatomy and the relationships between MC and surrounding structures. MATERIAL and METHODS: With the aid of a surgical microscope, MC and its contents were studied in 15 formalin-fixed cadaver head specimens. Measurements were made and their relationships were observed. RESULTS: The distance from the zygomatic arch and the lateral end of the petrous ridge to MC was 26.5 and 34.4 mm, respectively. The distance from the arcuate eminence, the facial nerve hiatus, and the foramen spinosum to MC was 16.6, 12.8 and 7.46 mm respectively. The TG lay 5.81 mm posterior to the foramen ovale. The distance from the abducens, trochlear and oculomotor nerves to the trigeminal ganglion was 1.87, 5.53 and 6.57 mm respectively. The distance from the posterior and the anterior walls of the sigmoid sinus to the trigeminal porus was 43.6 and 33.1 mm respectively. The trigeminal porus was on average 7.19 mm from the anterior wall of the internal acoustic meatus. CONCLUSION: The anatomical landmarks as presented herein regarding MC may be used for a safer skull base approach to the region.
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    The Comparison of the Right and Left Sigmoid Sinus Cross-Sectional Areas in Fetal Period and the Factors Affecting the Venous Dominance
    (AVES, 2019-01-01) Ozalp, Hakan; Aktekin, Mustafa; Hamzaoglu, Vural; Vayisoglu, Yusuf; Karatas, Mehmet Ali; Karsiyaka, Dilan; Uzmansel, Deniz; Arpaci, Rabia Bozdogan; Cayan, Filiz; Eti, Can Mehmet; Kanik, Arzu; Baskan, Fuat Cem; Aladag, Zeynep Cansu; Ertas, Elif; Dagtekin, Ahmet; Avci, Emel; Bagdatoglu, Celal; Talas, Derya Umit
    OBJECTIVES: Skull base is an important and a challenging area for surgeons. Success in skull base surgery depends on various factors such as pre-operative evaluation, appropriate surgical technique, anesthesia duration, intraoperative neuromonitorization and wound care. MATERIALS and METHODS: This study was performed in the Anatomy dissection laboratory of M.U. Medical Faculty (Ethical committee approval number 2010-103). Twelve fetuses between 17-33 gestational weeks fixed with formaldehyde were enrolled to the study. RESULTS:This study was planned to investigate the cross sectional areas of the sigmoid sinus in three levels to compare the right-left sides and the probable relationship among the levels in fetuses to further delineate the developmental factors on jugular foramen asymmetry. The cross-sectional measurements of sigmoid sinus lumen were done on 3 levels which are described as A1 level