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    Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study
    (Soc Chilena Anatomia, 2014) Sevinc, Ozdemir; Is, Merih; Barut, Cagatay; Erdogan, Aliriza
    There are a number of variations regarding morphometric anatomy and degree of pneumatization of the sphenoid sinus. In our study, we planned to examine and show the differences of pneumatization of the sphenoid sinus particularly to guide the neurosurgeon during transsphenoidal surgery. Sagittal T1-weighed spin-echo Magnetic Resonance Images (MRIs) of 616 adult individuals (406 women and 210 men) were analyzed, retrospectively. According to the collected data from our study, the most common type of the sphenoid sinus was the sellar type (83%; n=511) for the whole study group. Of the 616 individuals 16.6% (n=102) had presellar type and 0.5% (n=3) had conchal type of sphenoid sinus. Preoperative detailed detection of the anatomical characteristics of sphenoid sinus is essential. A thorough information obtained from studies of the regional anatomy and awareness of its variability can provide a safe and accurate transsphenoidal and extended endoscopic skull base approaches.
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    Evaluation of Hand Asymmetry in Relation to Hand Preference
    (Collegium Antropologicum, 2011) Barut, Cagatay; Sevinc, Ozdemir; Sumbuloglu, Vildan
    We evaluated the asymmetric hand measurements in right- and left-handed individuals. 343 men and 290 women aged 18-42 years (22.11 +/- 2.07) participated in the study. There were no statistically significant differences when right left differences in hand length, third finger length, pal mar length, and the digit index value were evaluated according to hand preference and sex. Statistically significant differences were found for right left differences in hand width, hand-shape index, and the pal mar length/width according to hand preference. The strong left-handers, weak left-handers, and ambidextrous individuals in the study group all exhibited asymmetry favoring the left and were considered together. Similarly, the strong and weak right-handers exhibited asymmetry favoring the right hand and were considered together. The difference between these two groups was significant. When the data were evaluated according to sex, significant differences were found between the subgroups. In particular, right left differences in the hand-shape index and palmar length/width values of the strong left-handers, weak left-handers, and ambidextrous individuals were found to be statistically significant according to sex; in contrast, the strong and weak right-handers showed no significant differences according to sex. These results suggest a relation of hand asymmetry to hand preference in a Turkish population.
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    Evaluation of Lingual Frenulum Using Geometric Morphometrics
    (Soc Chilena Anatomia, 2011) Kacar, Dundar; Cakmak, Fethiye; Dogan, Asli; Sevinc, Ozdemir; Barut, Cagatay
    A fold of tissue, the lingual frenulum, extends onto the inferior surface of the tongue from near the base of the tongue on midline. The shape, length and alignment of lingual frenulum vary between individuals. The aim of this study is to evaluate morphology of lingual frenulum with respect to gender. Ninety seven volunteers who were students and employees of Zonguldak Karaelmas University, School of Medicine participated in the study. Two individuals with a history of hepatitis and 20 individuals with inadequate photographs were excluded from the study. Morphometric analyses were performed on the photographs of 75 volunteers (36 men, 39 women). Lingual frenulum photograph of each individual was taken using standard photographic techniques. The individual opened his/her mouth as much as possible with the tongue in contact with the interior surface of the two middle incisors. The morphology of the lingual frenulum was evaluated with linear measurements and geometric morphometrics methods. The length of lingual frenulum between the attachments of it, to the floor of the mouth and the inferior surface of the tongue were measured using Digimizer software. Four reference points determined previously were marked by tpsDig2 software on photographs. This process was repeated for each sample to create a txt file containing reference points of 75 individuals. Statistical analysis of txt files were carried out using Morpheus software. There were no statistically significant differences between the linear measurements of lingual frenulum according to gender (p>0.05). Lingual frenulum had no gender differences according to geometric morphometrics analysis as well (p>0.05). It can be suggested that lingual frenulum had similar architecture in both sexes.
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    Evaluation of the Lateral Wall of the Nasal Cavity in Relation to Septal Deviation
    (Soc Chilena Anatomia, 2013) Sevinc, Ozdemir; Barut, Cagatay; Kacar, Dundar; Is, Merih
    The objective of this study was to evaluate the relationship between variations of the lateral wall of the nasal cavity and septal deviation (SD). Coronal and axial paranasal sinus CT images of 115 individuals (65 females, 50 males) were reviewed and the presence of pneumatisation and hypertrophy of the conchae was evaluated. Pneumatisation of the concha was classified as lamellar concha bullosa (LCB), bulbous concha bullosa (BCB), or extensive concha bullosa (ECB). If bulbous and extensive conchae and hypertrophic conchae were bilateral the side on which it was greatest was accepted as the dominant concha. The relationship between these variations and nasal septum deviation was also taken into account. Eighty-six (74.8%) of the 115 subjects had SD. Of these, 20 were not affected by the size of the middle nasal concha (MNC) or inferior nasal concha (INC). Thirty-four cases had dominant MNC, 20 had dominant INC, and 11 had both dominant MNC and dominant INC, and all of which had SD towards the opposite side. In one case there was SD towards the side in which the MNC was dominant. Our data indicate that coexistence of pneumatisation or hypertrophy of the conchae and SD was more common in adults compared to the results of similar studies conducted with a wide range of age groups, including children. Thus the presence of SD together with a large concha increases with age. A prospective study, which will include infants, will elucidate the relationship between conchae and SD.
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    Hand-grip strenghts in right- and left-handers with different degrees of hand preferences
    (2008) Barut, Cagatay; Sevinc, Ozdemir; Ozer, Cenk Murat; Sumbuloglu, Vildan
    We evaluated hand grip- strength in right- and left-handed individuals with different degrees of preferences. Six hundred and thirty-three individuals (343 men, 290 women) aged between 18 and 42 years (22.11±2,07) participated. Hand preference was determined using the Edinburgh Handedness Inventory. A hydraulic hand dynamometer was used to measure the grip-strengths, while sitting with the elbow in 90° flexion and the forearm in semi-pronation, lying on an arm rest. The mean value of three trials was recorded. Statistically significant differences were observed among strongly right-handed men, weakly right-handed men, ambidextrous men, weakly left-handed men, and strongly left-handed men for right-hand grip strength. The differences between strong left- and strong right-handed men, weak right-handed and strong left-handed men, ambidextrous, and strong left-handed men were the primary reasons for the significance. No statistically significant difference was found among the different hand preference groups of men for the left hand, and no statistically significant difference was detected among different hand preference groups of women for either hand. Our study provides insight into the relationship between handedness and hand performance based on grip strength in a Turkish population. © Universitätsverlag Ulm GmbH 2008.
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    Hand-grip Strengths in Right- and Left-handers with Different Degrees of Hand Preferences
    (Universitatsverlag Ulm Gmbh, 2008) Barut, Cagatay; Sevinc, Ozdemir; Ozer, Cenk Murat; Sumbuloglu, Vildan
    We evaluated hand grip- strength in right- and left-handed individuals with different degrees of preferences. Six hundred and thirty-three individuals (343 men, 290 women) aged between 18 and 42 years (22.11 +/- 2.07) participated. Hand preference was determined using the Edinburgh Handedness Inventory. A hydraulic hand dynamometer was used to measure the grip-strengths, while sitting with the elbow in 90 degrees flexion and the Forearm in semi-pronation, lying on ail arm rest. The mean value of three trials was recorded. Statistically significant differences were observed among strongly right-handed men, weakly right-handed men, ambidextrous men, weakly left-handed men, and strongly left-handed men for right-hand grip strength. The differences between strong left- and strong right-handed men, weak right-handed and strong left-handed men, ambidextrous, and strong left-handed men were the primary reasons for the significance. No statistically significant difference was found among the different hand preference groups of men for the left hand, and no statistically significant difference was detected among different hand preference,groups of women for either hand. Our study provides insight into the relationship between handedness and hand performance based on grip strength in a Turkish population.
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    The division level of the sciatic nerve and its relevance to popliteal nerve block. A cadaveric study
    (Riyadh Armed Forces Hospital, 2009) Barut, Cagatay; Comert, Ayhan; Esmer, Ali F.; Sevinc, Ozdemir; Ozden, Hilmi; Tekdemir, Ibrahim; Elhan, Alaittin
    [Anstract Not Available]
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    The Thickness of the Ligamentum Flavum in Relation to Age and Gender
    (Wiley, 2010) Safak, Alp Alper; Is, Merih; Sevinc, Ozdemir; Barut, Cagatay; Eryoruk, Nesrin; Erdogmus, Besir; Dosoglu, Murat
    Hypertrophy of the ligamentum flavum (LF) can reduce the diameter of the spinal canal posteriorly. Such stenosis may significantly compress the dural sac and nerve roots, resulting in symptoms, even without a bulging anulus fibrosus or herniated nucleus pulposus. We conducted an anatomical study to determine the influence of age and gender on the thickness of the LF at the lower lumbar levels using magnetic resonance imaging (MRI). The thickness of 1,280 ligaments was determined at the L4-L5 and L5-S1 levels from MRIs. We screened 320 patients (152 males [47.5%] and 168 females [52.5%]) between 21 and 82 years of age. There were no significant differences in LF thickness with respect to gender (P > 0.05). Age was not correlated with the thicknesses of the LF. The left LF at the L4-L5 and L5-S1 levels was significantly thicker than on the right side (P < 0.05). Furthermore, the LF thicknesses at L5-S1 bilaterally were significantly greater than on the corresponding sides at L4-L5 (P < 0.05). The LF is an important anatomical structure, which might cause low back or leg pain. Therefore, the thickness of the LF should be measured and evaluated carefully in the case of spinal stenosis. Clin. Anat. 23:79-83, 2010. (C) 2009 Wiley-Liss, Inc.