Ahmet Yildizhan

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The relatively rare occurrence and uncertainty about pathogenesis of intradurally displaced disc herniations stimulated an anatomico-pathological study into intradural disc herniations. The relation between the ventral dura and posterior longitudinal ligament in the cervical, thoracic, lumbar and sacral regions were examined macroscopically and(More)
OBJECTIVES To evaluate the early results of unilateral posterior lumbar interbody fusion technique in lumbar discectomy cases compared with simple discectomy and bilateral posterior interbody fusion cases using visual analog scale (VAS) and Oswestry outcomes instruments and radiological and physical examinations. METHODS The control group had 40 patients(More)
We present 3 cases of spontaneous regression of lumbar herniated disc. The disc regression correlated with clinical improvement documented by MRI studies. Although the phenomenon of spontaneous disappearance of decrease in size of herniated disc fragments is well known, the exact mechanism underlying this process remains unclear. We discuss 3 possible(More)
INTRODUCTION The purpose of this study was to determine whether ligamentum flavum hypertrophy among disc herniated patients causes contralateral pain symptoms. For this reason we measured the thickness of the ligament in disc herniated patients with ipsilateral or contralateral symptoms. MATERIAL AND METHODS Two hundred disc herniated patients with(More)
OBJECTIVE To evaluate the influence of the patients age on preoperative symptoms and outcome. METHODS The general data, symptoms, signs, and neurological examination findings were recorded from 511 patients between 2000 and 2006 at Vakif Gureba Hospital and Afyon Kocatepe University Neurosurgery Departments, Afyonkarahisar, Turkey. The mean follow-up of(More)
STUDY DESIGN A case report. OBJECTIVES To report two cases of intra-radicular disc herniation. SETTING Kocatepe University Faculty of Medicine, Department of Neurosurgery, Afyon, Turkey, Vakif Gureba Training Hospital, Department of Neurosurgery, Istanbul, Turkey and Yeditepe University Faculty of Medicine, Department of Neurosurgery, Istanbul, Turkey.(More)
The authors report and discuss an extremely rare case of primary Ewing's sarcoma originating in the flat bones of the skull. The case was followed up by serial bone scanning during the postoperative period. A subclinical recurrence was detected as a focus at the original site 2.5 years after the first operation. Following a second operation and adjuvant(More)
Foster Kennedy syndrome is a very rare syndrome which includes ipsilateral optic atrophy and central scotoma, anosmia, contralateral papilledema, and, occasionally, ipsilateral proptosis. A large frontal lobe, olfactory groove, or medial third sphenoidal wing tumor, usually a meningioma, creates this syndrome. In this report, the author presents a case of(More)