- Non-Surgical Pain Management (Spine)
- Lumbar Hernia
- Neck Hernia
- Low Back Pain
- Neck Pains
- Waist Slip
- Canal Stenosis
- Spine Injections
- Spine Traumas
- Spine Fractures
- Spinal Tumors
- Spinal Cord Tumor
- Scoliosis (Adult - Child)
- Kyphosis (Humpback)
- Brain Tumors
- Hydrocephalus
- Brain Aneurysms
- Brain Bleeding
Special Treatments Applied
- Waist and Neck Hernias (Microsurgery)
- Endoscopic Discectomy
- Scoliosis Surgery
- Pain Management
Graduated from Faculty of Medicine and Year
- Istanbul Faculty of Medicine (Çapa), 2007
Place and Year of Specialization Training
- Haseki Training and Research Hospital, 2009-2014
- Marmara Training and Research Hospital, 2012-2013
- Istanbul Faculty of Medicine (Çapa), 2001-2007
- Sivas Sarkisla Akcakisla ASM, 2008-2009
- Haseki Training and Research Hospital, 2009-2014
- Marmara Training and Research Hospital, 2012-2013
- Batman Regional State Hospital, 2014-2016
- Private Kurtköy Ersoy Hospital, 2016-2018
- Istanbul Okan University Hospital, 2018-2021
MEDICAL AWARDS
- Best Paper Award (2019)
Dalbayrak S, Yilmaz M, Koban O, Ogrenci A. Reconstruction with Ponte Osteotomies in Degenerative Deformity with Sagittal Imbalance. Reclining Spine Symposium, Antalya
- Best Paper Award (2017)
S.Dalbayrak, O.Koban, Ogrenci A, M.Yilmaz, O.Yaman; A different approach in scoliosis surgery; 2017 Thoracic cervical degenerative diseases symposium, Bodrum
- Best Second Paper Award (2016)
Ogrenci A, Koban O, O.Yaman, M.Yilmaz, S.Dalbayrak: Dynamic stabilization in Degenerative Spine Diseases and Clinical Results: October 2016 Lumbar Degenerative Spine Spring Symposium
- Third Best Paper Award (2017)
Ogrenci A, O.Koban, O.Yaman, M.Yilmaz, S.Dalbayrak: Results of high-grade spondylolisthesis surgery, Thoracic cervical degenerative diseases symposium, Bodrum
- Third Best Paper Award (2017)
O. Koban, Ogrenci A, Yaman O, Yilmaz M, Dalbayrak S: Dynamic Stabilization in Lumbar degenartive Scoliosis Surgery; Turkish Neurosurgery Society Congress
- Third Best Paper Award (2018)
O.Koban, Ogrenci A, Yilmaz M, Dalbayrak S: Sacral Insufficiency Fractures; Complications in Spinal Surgery Symposium
MEMBERSHIP
- Turkish Medical Association Istanbul Medical Chamber
- Turkish Neurosurgery Association
- Turkish Spine Association
- Turkish Neurosurgery Society Spinal and Peripheral Nerve Surgery Educ. Instructor group
- EANS (European Society of Neurosurgery)
Articles published in international refereed journals (SCI, SSCI, Arts and Humanities)
- Ogrencı A. Koban O, Yaman O, Yılmaz M, Dalbayrak S.Traumatic sequestrated thoracic disc herniation; a case report Turk Neurosurg, 1 [Epub ahead of print].
- Ogrencı A, Koban O, Yaman O, Yılmaz M, Dalbayrak S. (2017). Clinical Comparison Between Patients Operated for Unilateral Radiculopathy via a Contralateral (Facet-Sparing) and Ipsilateral Side Approach.Turk Neurosurg, 1.
- Koban O, Ogrencı A, Yaman O, Dalbayrak S.Phantom Radicular Pain Treated with Lumbar Microdiscectomy: A Case Report.Turk Neurosurg. 2017 Feb 15. doi: 10.5137/1019-5149.JTN.19768-16.1. [Epub ahead of print].
- Batçık, OE, Öğrenci A, Koban O, Ekşi, MŞ, Bilge, T. (2016). Cerebral Alveolar Echinococcosis Concomitant with Liver and Lung Lesions in a Young Adult Patient: Case Report and Literature Review.Turkiye Parazitol Derg,40, 169-71
- Ogrencı A, Ekşi MŞ, Koban O, Karakuş M.Spontaneous rapid resolution of acute subdural hematoma in children. Childs Nerv Syst. 2015 Dec;31(12):2239-43.
- Ogrencı A, Ekşi MŞ, Özcan-Ekşi EE, Koban O.From idea to publication: Publication rates of theses in neurosurgery from Turkey. Neurol Neurochir Pol. 2016;50(1):45-7.
- Ogrencı A, Ekşi MŞ, Gün B, Koban O. Traumatic basal ganglia hematoma following closed head injuries in children.Childs Nerv.Syst 2016
- Koban O, Çal H, Ekşi MŞ, Özcan-Ekşi EE, Öğrenci A. Migrating bullet in the thecal sac at the level of the conus medullaris without neurological deficit. J Clin Neurosci. 2016 Feb 23. pii: S0967-5868(16)00043-6
- Ogrencı A, Batçık OE, Ekşi MŞ, Koban O. Pandora's box: eosinophilic granuloma at the cerebellopontine angle-should we open it? Childs Nerv Syst. 2015 Dec 12.
- Ogrencı A, Ekşi MŞ, Koban O. (2016). Spontaneous third ventriculostomy 8 years after diagnosis of obstructive hydrocephalus. Child's Nervous System, 32(9), 1727-1730.
- Ogrenci A, Koban O, Yaman O, Yilmaz M, Dalbayrak S. (2019). Polyetheretherketone Rods in Lumbar Spine Degenerative Disease: Mid-term Results in a Patient Series Involving Radiological and Clinical Assessment. Turkish Neurosurgery, 29(3):392-399,
- Koban O, Ogrenci A, Yilmaz M, Dalbayrak S. (2020)Vertebroplasty with Decompression for Epidural Extending Vertebral Hemangiomas: An Alternative Technique. Turkish Neurosurgery DOI: 10.5137/1019-5149.JTN.28191-19.2
- Akar E, Ogrenci A, Koban O, Yaman O, Yilmaz M, Dalbayrak S. (2019) Acute spinal epidural hematoma: A case report and review of the literatüre. Ulus Travma Acil Cerrahi Derg. 2020; 26(4): 628-631
- Dalbayrak S, Ogrenci A, Akar E, Koban O, Yilmaz A, Yilmaz M.(2020) Clinical and radiological outcomes after correction of degenerative lumbar scoliosis with dynamic stabilization (with the help of a rigid rod); and describing an alternative technique September 2020 Journal of Clinical Neuroscience 79:123-128
- Ogrenci A, Akar E, Koban O, Isik S, Sener M, Yilmaz M, Dalbayrak S. (2020) Spinal Anesthesia in Surgical Treatment of Lumbar Spine Tumors. June 2020 Clinical Neurology and Neurosurgery 196:106023 DOI: 10.1016/j.clineuro.2020.106023
- Akar E, Koban O, Ogrenci A, Yilmaz M, Dalbayrak S. (2020) Polymethylmetacrylate Cement Augmentation of the Coccyx (Coccygeoplasty) for Fracture: A Case Report Balkan Med J 2020;37:348-50
- Koban O, Akar E, Ogrenci A, Yilmaz M, Dalbayrak S Any Instrument in a Surgeon's Hand can be Fatal: Unusual Iliac Artery Injury in Lumbar Spinal Deformity Surgery. World Neurosurg 2020 Nov;143:276-279
Articles published in other international peer-reviewed journals
- Ekşi MŞ, Öğrenci A, Batçık OE, Koban O Management of obstructive hydrocephalus in pregnant patient. Asian Journal of Neurosurgery 2015.
- Ogrencı A, Koban O, Ekşi M, Yaman O, Dalbayrak S. (2017). The Necessity of Follow-Up Brain Computed-Tomography Scans: Is It the Pathology Itself Or Our Fear that We Should Overcome?.Open access Macedonian journal of medical sciences, 5(6), 740.
- Ogrencı A, Koban O, Yaman O, Dalbayrak S, Yılmaz M. (2018). The Effect of Technological Devices on Cervical Lordosis.Open access Macedonian journal of medical sciences,6(3), 467.
- Şentürk S, Ogrencı A, Gürçay AG, Abdioğlu AA, Yaman O, Özer AF. (2018). Classification of Radiological Changes in Burst Fractures.Open access Macedonian journal of medical sciences,6(2), 359.
- Ogrencı A, Koban O, Ekşi M, Yaman O, Dalbayrak, S. (2017). Traumatic Transient Herniation Concomitant with Tonsillar Hemorrhagic Contusion in a Child.Open access Macedonian journal of medical sciences,5(6), 771
- Ogrencı A, Koban O, Şentürk S, Yaman O, Sasani M, Dalbayrak S, Ozer AF. Giant Spinal Schwannomas. Clin Surg. 2017; 2, 1593
Papers presented at international scientific meetings and published in the proceedings book
- Ogrencı A, O Koban, OE. Batçık: Multiple Cranial Masses;metastasis? Echinococcus Multilocularis , WFNS Oral Presentation Abstract No. FA2626, 2013
- Ogrencı A, O Koban, OE. Batçık: The Only Complaint, Impotence; Recurrent Neuroenteric Cyst, WFNS Abstract No. FA2626, 2013
- Koban O, Öğrenci A, Yaman O, Dalbayrak S, Yılmaz M. Clinical and Radiological Results of Dynamic Instrumentation in Lomber Degenerative Scoliosis and Degenerative Listhesis Surgery, WFNS İstanbul
- Ogrencı A. Dynamic Stabilization with Polyetheretherketone (PEEK) Rods: Mid-term Results (5 Years) in Lumbar Spine Degenerative Diseases in A Comprehensive Patients Series-Radiological and Clinical Assessment,Niş Sırbıitan
Articles published in national peer-reviewed journals
- Ogrencı A, Koban O. Yaman O. Yılmaz M, Dalbayrak S. Hammering Nail to The Head for Suicide; A Case Report And Literature Review ; İntihar Amaçlı Kafaya Çivi Çakma;Olgu Sunumu ve Literatürün Gözden Geçirilmesi Haseki Tıp Bulteni DOI: 10.4274/haseki.4351 Med Bull Haseki 2018
- Ogrencı A. Bone Protrusion That We Should be Aware of: Foraminal Osteophytes; Classification and Surgical Results; Farkında Olmamız Gereken Kemik çıkıntı: foraminal osteofitler; sınıflama ve cerrahi sonuçlar , Haseki Tıp Bulteni, 2018;56:299-306
- Ogrencı A. ,Spinal Cerrahi Sonrasındaki Pnömosefalide Dural Yırtığın Yerinin ve Tamirinin Etkisi; Effects of the Location of Dural Tear and Repair in the Development of Pneumocephalus after Spinal Surgery. Haseki Tıp Bulteni 2019;57:162-165
- Ogrencı A, Koban O, Yaman O, Dalbayrak S. (2018). Isolated Unilateral Temporalis Muscle Hypertrophy: A Case Report and Review of the Literature; İzole Unilateral Temporal Adele Hipertrofisi; Olgu Sunumu ve Literatürün Gözden Geçirilmesi. DOI: 10.4274/haseki.47965 Med Bull Haseki
- Ayşegül Özdemir Ovalıoğlu, İlhan Yılmaz, Ahmet Öğrenci, Ersegun Batçık, Turgay Bilge.Intracranial lipomas;Two Cases Report Şişli Etfal Tıp Dergisi 2012 46(4);217-220
- Ogrenci A , Koban O . Lomber Dejeneratif Hastaliklarda Lomber Transforaminal Korpuslar Arasi Füzyon (Tlif) Kafeslerinin Anteriora Doğru Yerleştirilmesi; Retrospektif Analiz Anterior Misplacement of Lumbar Transforaminal Interbody Fusion (TLIF) Cages in Lumbar Degenerative Disc Disease: A retrospective Analysis. Bozok Tıp Dergisi. 2019; 9(2): 5-1
- Koban O, Ogrencı A, Yılmaz M, Dalbayrak S (2020). A Less Invasive Approach In Isthmic Spondylolisthesis: Spino-semilamina-facet Sparing Technique August 2020 Journal of Turkish Spinal Surgery 31(3):160-166
- Ogrenci A, Akar E, Koban O, Yaman O, Yilmaz M, Dalbayrak S. Dynamıc Instrumentation Of The Thoracic Spine. J Turk Spinal Surg 2020;31(4):251-53.
Other publications
- Ogrencı A, Yılmaz M. Torakal Disk Hernilerinin Cerrahi Tedavisinde Posterolateral Yöntemler Posterolateral Methods in the Surgical Treatment of Thoracic Disc Herniations .Turk Nöroşirurji Dergisi, Ek sayı,2018
- Ogrenci, A. Yaman, O. (2017). Surgeon Handedness in Transpedicular Instrumentation-A Short Review.J Spine,6(387), 2