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    Determining the Morphometry and Variations of the Confluens Sinuum and Related Structures Via a Silicone Painting Technique on Autopsy Patients
    (Lippincott Williams & Wilkins, 2014) Cosar, Murat; Seker, Askin; Ceylan, Davut; Tatarli, Necati; Sahin, Fevzi; Tokmak, Mehmet; Songur, Ahmet
    In this study, we aimed to investigate the morphometric and morphologic structures of the confluens sinuum (CS) and related structures with a silicone painting technique. We studied 30 cadavers. Twelve of them were washed with alcohol and filled with a silicone painting technique via the vena jugularis interna, internal carotid artery, and vertebral artery. The other 18 were autopsied postmortem. The CS and related structures were dissected under microscope. Their anatomy was investigated, and variations were noted. The diameters of the sinus sagittalis superior (SSS), CS, occipital sinus (OS), sinus rectus (SR), and bilateral transverse sinus (TS), and the angle between SSS and SR were measured. The mean diameters were 11.7 mm for SSS, 22.3 mm for CS, 5.25 mm for OS, 7.5 mm for SR, and 9.7 (right) and 9.1 mm (left) for TS. The angle between the SR and SSS was 58 degrees. There was no difference in the bilateral venous structures that drained to the SSS and TS. There was an extra drainage to the CS from the left side in 4 cases. The right TS was located superiorly in 7 cases compared with the left TS, and this process was correlated with the type of CS. A septum in the SSS was detected in 2 cases. In addition, we encountered an OS in 80% of the cases. We conclude that the septum inside the CS affects the dominancy of the TS, the angle between the SSS and SR, and the other venous variations.
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    Effect of Using High-Speed Drill in Anterior Cervical Discectomy and Fusion
    (Turkish Neurosurgical Soc, 2016) Guven, Mustafa; Ceylan, Davut; Aras, Adem Bozkurt; Akbal, Ayla; Gokmen, Ferhat; Resorlu, Hatice; Alkan, Bahadir
    AIM: The objective of this study was to investigate the effect of using 2 different surgical techniques (curette or high-speed drill) in anterior cervical discectomy surgery on the healing of cases. MATERIAL and METHODS: Fifty-four operated cervical disc hernia cases were retrospectively examined in 2 groups. Discectomy and osteophytectomy were carried out in Group A by using a high-speed drill, while a curette was used for group B. Preoperative and postoperative computerized tomography and direct radiography were performed. Cervical disc height, cervical and segmental lordotic angles were calculated. The visual analogue scale and Odom's criteria were used in the assessment of pain and clinical healing. The fusion ratio of both groups was compared. The Mann-Whitney U test was used to compare data from the groups. RESULTS: Satisfactory results were obtained in the groups where high-speed drill and curette were used. Independently from the surgical technique, pain scores were significantly reduced in both groups after surgery. No radiologically significant differences were identified between the two groups within the postoperative period. CONCLUSION: Either high-speed drill or curette can be chosen for the osteophytectomy and discectomy stages of anterior cervical discectomy operations.
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    Management of Type II Odontoid Fractures for Osteoporotic Bone Structure: Preliminary Report
    (Turkish Neurosurgical Soc, 2015) Cosar, Murat; Ozer, A. Fahir; Alkan, Bahadir; Guven, Mustafa; Akman, Tarik; Aras, Adem Bozkurt; Ceylan, Davut
    AIM: Anterior transodontoid screw fixation technique is generally chosen for the management of type II odontoid fractures. The nonunion of type II odontoid fractures is still a major problem especially in elderly and osteoporotic patients. Eleven osteoporotic type II odontoid fracured patients were presented in this article. MATERIAL and METHODS: We have divided 11 patients in two groups as classical and Ozer's technique.We have also compared (radiologically and clinically) the classical anterior transodontoid screw fixation (group II: 6 cases) and Ozer's transodontoid screw fixation technique (group I: 5 cases) retrospectively. RESULTS: There was no difference regaring the clinical features of the groups. However, the radiological results showed 100% fusion for Ozer's screw fixation technique and 83% fusion for the classical screw fixation technique. CONCLUSION; In conclusion, we suggest that Ozer's technique may help to increase the fusion capacity for osteoporotic type II odontoid fractures.
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    Migration of a bullet in the lumbar intervertebral disc space causing back pain - Case report
    (Japan Neurosurgical Soc, 2008) Ceylan, Davut; Cosar, Murat
    A 41-year-old man presented with low-velocity gunshot injury in the right abdomen. Neuroirnaging showed the bullet located in the L2-3 intervertebral disc space, but neurological examination found no abnormalities. Exploratory laparotomy was performed because of retroperitoneal hematoma. Two months after the gunshot injury, the patient presented with severe low back pain. Serial neuroirnaging showed that the bullet had migrated in the intervertebral disc space. The bullet was removed via right L2 hemilaminectomy. The patient had no complaints after the operation. Early recognition and surgical intervention for bullets embedded in the intervertebral disc space may present with neurological and related complications.