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  • Küçük Resim
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    Morphometric analysis of the infraorbital foramen, canal and groove using cone beam CT: Considerations for creating artificial organs
    (Wichtig Publishing, 2016) Orhan, Kaan; Mısırlı, Melis; Aksoy, Seçil; Seki, Umut; Hınçal, Evren; Örmeci, Tuğrul; Arslan, Ahmet
    Purpose: The aim of this study was to examine the anatomy and variations of the infraorbital foramen and its surroundings via morphometric measurements using cone beam computed tomography (CBCT) scans derived from a 3D volumetric rendering program. Methods: 354 sides of CBCT scans from 177 patients were examined in this study. DICOM data from these images were exported to Maxilim (R) software in order to generate 3D surface models. The morphometric measurements were done for infraorbital foramen (IOF), infraorbital groove (IOG) and infraorbital canal (IOC). All images were evaluated by 1 radiologist. To assess intra-observer reliability, the Wilcoxon matched-pairs signed rank test was used. Differences between sex, side, age and measurements were evaluated using chi-square and paired t-test and measurements were evaluated using 1-way ANOVA tests. Differences were considered significant when p<0.05. Results: The most common shape was oval for IOF and parallel for IOC without any accessory foramen. The results showed that females have smaller dimensions for the measurements between the two foramen rotundum (FR), FR-IOF, sella-FR, center of the IOF (cIOF)-nasion (N), cIOF-NB (nasion-B) (p>0.05). No significant difference was found according to age groups (p>0.05). Conclusions: These results provide detailed knowledge of the anatomical characteristics in this particular area. CBCT imaging with lower radiation dose and thin slices can be a powerful tool for anesthesia procedures like infra orbital nerve blocks, for surgical approaches like osteotomies and neurectomies and also for generating artificial prostheses.
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    Sacroiliac joint dysfunction
    (Turkish Neurosurgical Society, 2010) İlaslan, Hakan; Arslan, Ahmet; Koç, Ömer Nadir; Dalkılıç, Türker; Naderi, Sait
    AIM: Sacroiliac joint dysfunction is a disorder presenting with low back andgroin pain. It should be taken into consideration during the preoperativedifferential diagnosis of lumbar disc herniation, lumbar spinal stenosis and facetsyndrome.MATERIAL and METHODS: Four cases with sacroiliac dysfunction arepresented. The clinical and radiological signs supported the evidence ofsacroiliac dysfunction, and exact diagnosis was made after positive response tosacroiliac joint block.RESULTS: A percutaneous sacroiliac fixation provided pain relief in all cases.The mean VAS scores reduced from 8.2 to 2.2.CONCLUSION: It is concluded that sacroiliac joint dysfunction diagnosisrequires a carefull physical examination of the sacroiliac joints in all cases withlow back and groin pain. The diagnosis is made based on positive response to thesacroiliac block. Sacroiliac fixation was found to be effective in carefully selectedcases.