1. TEZER M, Kabukçuoğlu Y, Öztürk İ, Kuzgun Ü. Bone transport technique in defect pseudoarthrosis of children. SICOT 21st Triennial World Congress, Sydney, Australia, April 18-23, 1999.
2. Öztürk İ, TEZER M, Küçükkaya M, Kuzgun Ü. The treatment of pseudoarthrosis of the lower extremity by Ilizarov method. SICOT 21st Triennial World Congress, Sydney, Austrlia, April 18-23, 1999.
3. Kabukçuoğlu Y, Küçükkaya M, TEZER M, Kuzgun Ü. A new technique for fixation of the foot with the Ilizarov fixator. SICOT 21st Triennial World Congress, Sydney, Austral-ia, April 18-23, 1999.
4. TEZER M, Aksoy B, Ertürer E, Öztürk İ, Hamzaoğlu A. Multifocal spinal tuberculous infection. A case report. 5th International Congress on Spine Surgery and 7th Europe-an GICD Forum on Spondylolisthesis, Istanbul, Turkey, June 20-24, 1999.
5. TEZER M, Özbal R, Kabukçuoğlu Y, Eryiğit C, Kuzgun Ü. Solitary osseous myeloma of spine treated with anterior and posterior combined surgical methods. A case report. 5th International Congress on Spine Surgery and 7th European GICD Forum on Spondylolisthesis, Istanbul,Turkey, June 20-24, 1999.
6. TEZER M, Küçükkaya M, Ertürer E, Öztürk İ, Hamzaoğlu A. Hemangioma of the lum-bar vertebrae treated with total vertebrectomy, anterior grafting and posterior spinal in-strumentation and fusion. A case report. 5th International Congress on Spine Surgery and 7th European GICD Forum on Spondylolisthesis, Istanbul, Turkey, June 20-24, 1999.
7. TEZER M, Kucukkaya M, Isik C, Armagan R, Kuzgun U. Lower extremity amputa-tions due to foot and ankle pathologies. 4th congress of the European Foot and Ankle Society, Sevilla – Spain, March 21-23, 2002.
8. TEZER M, Kabukcuoglu Y, Kuzgun U. Late sequelae of ankle joint after neonatal septic arthritis. 4th congress of the European Foot and Ankle Society, Sevilla – Spain, March 21-23, 2002.
9. TEZER M, Eren T, Yılmaz C, Kuzgun U. Grice-type extra-articular arthrodesis for cor-recting valgus subtalar joint in childhood. 4th congress of the European Foot and An-kle Society, Sevilla – Spain, March 21-23, 2002.
10. TEZER M, Kabukcuoglu Y, Ozturk I, Kuzgun U. Large symptomatic lumbar Schmorl nodule mimicing tumour: Case report. SICOT 22nd World Congress, San Diego, USA, August 25-30, 2002.
11. TEZER M, Kucukkaya M, Ozturk I, Kuzgun U. Surgical treatment of Pott’s disease localized to lumbosacral junction. SICOT 22nd World Congress, San Diego, USA, Au-gust 25-30, 2002.
12. TEZER M, Kucukkaya M, Yatarkalkmaz H, Kuzgun U. Vertebral hydatid disease and its treatment by anterior-posterior radical excision, fusion and chemotherapy with albendazole. Case report- one year follow-up result. SICOT 22nd World Congress, San Diego, USA, August 25-30, 2002.
13. TEZER M, Eren T, Sari A, Kuzgun U. Extensive lumbar spinal Pott’s disease spreading along posterior longitudinal ligament which mimics septic arthritis of the hip in a child: A case report. SICOT 22nd World Congress, San Diego, USA, August 25-30, 2002.
14. Talu U, TEZER M, Mirzanli C, Domanic U, Hamzaoglu A. How does lum-bosacropelvic junction respound to correction of sagittal imbalance in short-segment and angular kyphotic deformity? 11th International Meeting on Advanced Spine Tech-niques Bermuda, July 1-3, 2004.
15. Aydogan M, Ozturk C, TEZER M, Gogus A, Camurdan MAK, Hamzaoglu A. Treat-ment approach in tandem (concurrent) cervical and lumbar spinal stenosis. 7th Interna-tional Congress on Spine Belek-Antalya, Turkey, April 14-17, 2005.
16. Ozturk C, TEZER M, Sarier M, Aydoğan M, Mirzanli C, Hamzaoglu A. Thoracic spi-nal stenosis above severe thoracolumbar kyphosis causing neurological deficit. 7th International Congress on Spine, Antalya, 14-17 April 2005.
17. Ozturk C, TEZER M, Aydoğan M, Isiklar U, Erdem MN, Hamzaoglu A. Percutaneous reduction and stabilization of thoracolumbar fractures without neurological deficit. 7th International Congress on Spine, Antalya, 14-17 April 2005.
18. TEZER M, Aydogan M, Talu U, Mirzanli C, Camurdan K, Hamzaoglu A. Posterior vertebrectomy in kyphosis, kyphoscoliosis and scoliosis caused by hemivertebra. 12nd International Meeting on Advanced Spine Techniques Banf-Alberta, Canada, July 7-9, 2005.
19. Ozturk C, TEZER M, Talu U, Aydogan M, Camurdan K, Hamzaoglu A. Percutane-ous reduction and stabilization of thoracolumbar fractures without neurological deficit: A new technique. 12nd International Meeting on Advanced Spine Techniques Banf-Alberta, Canada, July 7-9, 2005.
20. TEZER M, Ozturk C, Talu U, Mirzanli C, Erdem N, Hamzaoglu A. Thoracic spinal stenosis above severe thoracolumbar kyphosis causing neurological deficit. 12nd In-ternational Meeting on Advanced Spine Techniques Banf-Alberta, Canada, July 7-9, 2005.
21. Ozturk C, TEZER M, Talu U, Aydogan M, Korkmaz F, Hamzaoglu A. Is there any criteria to stop fusion at lumbar three level in posterior surgery for adolescent idiopathic scoliosis. 12nd International Meeting on Advanced Spine Techniques Banf-Alberta, Canada, July 7-9, 2005.
22. TEZER M, Ozturk C, Aydogan M, Mırzanlı C, Camurdan K, Hamzaoglu A. Assess-ment of curve flexibility in neuromuscular scoliosis by traction radiographies taken un-der general anesthesia: Is the anterior surgery always necessary? 12nd İnternational Meeting on Advanced Spine Techniques Banf-Alberta, Canada, July 7-9, 2005.
23. Aydogan M, Talu U, Ozturk C, TEZER M, Erdem N, Hamzaoglu A. Vertebrectomy and instrumentation via posterior approach for severe sagittal and frontal plane deform-ity. 12th International Meeting on Advanced Spine Techniques (IMAST), Banff, 07-09 July 2005.
24. TEZER M, Ozturk C, Aydogan M, Mirzanli C, Karatoprak O, Hamzaoglu A. Posterior vertebrectomy in kyphosis, kyphoscoliosis and scoliosis caused by hemivertebra. 7th Annual Meeting of the Spine Society of Europe (EuroSpine 2005), Barcelona, 21-24 September 2005.
25. Ozturk C, TEZER M, Talu U, Aydogan M, Mirzanli C, Hamzaoglu A. Is there any cri-teria to stop fusion at lumbar three level in posterior surgery for adolescent idiopathic scoliosis? 7th Annual Meeting of the Spine Society of Europe (EuroSpine 2005), Bar-celona, 21-24 September 2005.
26. Mirzanli C, TEZER M, Ozturk C, Aydogan M, Erturer E, Hamzaoglu A. Late revision surgery in adolescent idiopathic scoliosis. 7th Annual Meeting of the Spine Society of Europe (EuroSpine 2005), Barcelona, 21-24 September 2005.
27. Karatoprak O, Aydogan M, Talu U, Mirzanli C, TEZER M, Ozturk C, Hamzaoglu A. Intraoperative halofemoral traction in the treatment of severe scoliosis. Eurospine 2006, 8th Annual Meeting of the Spine Society of Europe, Istanbul, 25-28 October 2006.
28. Aydogan M, Ozturk C, TEZER M, Sarier M, Kara AN, Hamzaoglu A. Multilevel cervi-cal total disc replacement for symptomatic degenerative disc disease. Annual Meeting of the Cervical Spine Research Society European Section, Leuven, 30 May-1 June 2007.
29. Aydogan M, Ozturk C, TEZER M, Karatoprak O, Kara AN, Hamzaoglu A. The effect of single-multilevel cervical total disc arthroplasty to the segmental and total lordosis of cervical spine. Annual Meeting of the Cervical Spine Research Society European Sec-tion, Leuven, 30 May-1 June 2007.
30. Ozturk C, Aydogan M, Sarier M, TEZER M, Mirzanli C, Hamzaoglu A. Surgical treatment of odontoid fractures with C1-C2 pedicle screw. Annual Meeting of the Cer-vical Spine Research Society European Section, Leuven, 30 May-1 June 2007.
31. TEZER M, Ozturk C, Aydogan M, Sarier M, Aksu N, Hamzaoglu A. Cervical disc re-placement of C7-T1 level for degenerative disc disease. Annual Meeting of the Cervi-cal Spine Research Society European Section, Leuven, 30 May-1 June 2007.
32. Ozturk C, Erdem N, Sirikci M, Teli M, TEZER M, Hamzaoglu A. Lumbar degenera-tive spine surgery in patients with Parkinson disease. International Intradiscal Therapy Society 20th Annual Conference, Albi, 19-23 June 2007.
33. TEZER M, Ozturk C, Aydogan M, Aksu N, Karatoprak O, Hamzaoglu A. Multilevel total lumbar disc replacement for symptomatic disc disease. International Intradiscal Therapy Society 20th Annual Conference, Albi, 19-23 June 2007.
34. Ozturk C, Aydogan M, TEZER M, Korkmaz F, Karatoprak O, Hamzaoglu A. 270 de-grees fusion following decompression with unilateral hemilaminectomy in the surgical treatment of degenerative lumbar spinal stenosis in middle-aged patients. International Intradiscal Therapy Society 20th Annual Conference, Albi, 19-23 June 2007.
35. Ozturk C, Erdem MN, Sirikci M, Teli M, TEZER M, Hamzaoglu A. Lumbar degenera-tive spine surgery in patients with Parkinson disease. World Spine IV: Fourth Interdis-ciplinary Congress on Spine Care, Istanbul, 29 July – 1 August 2007.
36. Aydogan M, Ozturk C, TEZER M, Karatoprak O, Teli M, Hamzaoglu A. The effect of single-multilevel cervical disc arthroplasty to the segmental and total lordosis of the cervical spine. Eurospine 2007, Brussels, 2-6 October 2007.
37. Ozturk C, Aydogan M, Teli M, Korkmaz F, Sirikci M, TEZER M, Hamzaoglu A. The pedicle screw fixation with vertebroplasty augmentation in the surgical treatment of the severe osteoporotic spines. Eurospine 2007, Brussels, 2-6 October 2007.
38. Ozturk C, Aydogan M, Talu U, Teli M, TEZER M, Hamzaoglu A. Posterior surgery instead of anterior surgery by stopping the fusion at the same distal level in the surgi-cal treatment of adolescent idiopathic scoliosis with Lenke type 5C curves. Eurospine 2007, Brussels, 2-6 October 2007.
39. Aydogan M, Ozturk C, Karatoprak O, TEZER M, Debre M, Hamzaoglu A. The role of hyperextension fulcrum graphies taken under general anesthesia in the evaluation of flexibility of kyphosis in Scheurmann disease. Spineweek2008, Geneva, 26-31 May 2008.
40. Berk H, Hamzaoglu A, Ozturk C, Aydogan M, TEZER M, Karatoprak O. Sacral tilt: an etiological factor in idiopathic scoliosis. Spineweek2008, Geneva, 26-31 May 2008.
41. Ozturk C, Hamzaoglu A, Teli M, TEZER M, Aydogan M, Enercan M. Selective tho-racic fusion in adolescent idiopathic scoliosis with Lenke type 1C, 3C or King type 2 lumbar curves of more than 50 degrees in magnitude. 43rd Scoliosis Research Society Annual Meeting & Course, Salt Lake City, 10-13 September 2008.
42. Ozturk C, Aydogan M, TEZER M, Brayda-Bruno M, Aksu N, Hamzaoglu A. The role of hyperextension fulcrum graphies taken under general anesthesia in the evaluation of flexibility of kyphosis in Scheurmann’s disease. 15th International Meeting on Ad-vanced Spine Techniques (IMAST), Hong Kong, 8-11 July 2008.
43. Aydogan M, Ozturk C, TEZER M, Enercan M, Karatoprak O, Hamzaoglu A. Anterior vs. posterior surgery in Lenke type 5 adolescent idiopathic scoliosis. 15th International Meeting on Advanced Spine Techniques (IMAST), Hong Kong, 8-11 July 2008.
44. Berk H, Hamzaoglu A, Ozturk C, Tonbul M, TEZER M, Karatoprak O. Sacral tilt: An etiological factor in idiopathic scoliosis? 15th International Meeting on Advanced Spine Techniques (IMAST), Hong Kong, 8-11 July 2008.
45. Aydogan M, Ozturk C, Teli MG, Tonbul M, TEZER M, Hamzaoglu A. The role of rou-tine magnetic resonance imaging in the pre-operative evaluation of adolescent idio-pathic scoliosis. 15th International Meeting on Advanced Spine Techniques (IMAST), Hong Kong, 8-11 July 2008.
46. Aydogan M, Ozturk C, Enercan M, TEZER M, Karatoprak O, Hamzaoglu A. Compar-ison of cosmetic and functional outcomes after anterior retroperitoneal paramedian vs. anterolateral retroperitoneal approaches in lumbar spinal stenosis surgery. 15th Inter-national Meeting on Advanced Spine Techniques (IMAST), Hong Kong, 8-11 July 2008.
47. Aydogan M, Enercan M, Ozturk C, TEZER M, Aksu N, Hamzaoglu A. Comparison of cosmetical and functional outcomes after anterior paramedian versus anterolateral retroperitoneal approaches in lumbar spinal stenosis surgery. Scoliosis Research So-ciety Worldwide Programme on Spinal Deformity: Current Concepts, New Delhi, 2-4 October 2008.
48. Ozturk C, Aydogan M, Enercan M, TEZER M, Aksu N, Hamzaoglu A. The pedicle screw fixation with vertebroplasty augmentation in the surgical treatment of lumbar spinal stenosis associated with deformity in the presence of severe osteoporosis. Sco-liosis Research Society Worldwide Programme on Spinal Deformity: Current Concepts, New Delhi, 2-4 October 2008.
49. Ozturk C, TEZER M, Enercan M, Aydogan M, Karatoprak O, Hamzaoglu A. The ped-icle screw fixation with vertebroplasty augmentation in the surgical treatment of lumbar spinal stenosis associated with deformity in the presence of severe osteoporosis. 8th International Turkish Spine Congress, İzmir, 23-26 October 2008.
50. Ozturk C, TEZER M, Enercan M, Aydogan M, Karatoprak O, Hamzaoglu A. The ped-icle screw fixation with vertebroplasty augmentation in the surgical treatment of the se-vere osteoporotic spines. 8th International Turkish Spine Congress, İzmir, 23-26 Octo-ber 2008.
51. Ozturk C, Aydogan M, Enercan M, TEZER M, Aksu N, Hamzaoglu A. Lumbar de-generative spine surgery in patients with Parkinson disease. 8th International Turkish Spine Congress, İzmir, 23-26 October 2008.
52. Karatoprak O, Aydogan M, TEZER M, Ozturk C, Enercan M, Hamzaoglu A. Cervical disc replacement of C7-T1 level for degenerative disc disease. 8th International Turkish Spine Congress, İzmir, 23-26 October 2008.
53. Ozturk C, TEZER M, Karadereliler S, Debre M, Enercan M, Hamzaoglu A. Posterior vertebral column resection in congenital thoracic lordoscoliosis. 16th International Meeting on Advanced Spine Techniques (IMAST), Vienna, 15-18 July 2009.
54. Hamzaoglu A, Ozturk C, Alanay A, TEZER M, Enercan M, Karatoprak O. How to prevent postoperative shoulder imbalance in Lenke type 1 and 3 curves with negative T1 tilt and elevated right shoulder? 16th International Meeting on Advanced Spine Techniques (IMAST), Vienna, 15-18 July 2009.
55. Ozturk C, Karatoprak O, Aksu N, Karadereliler S, TEZER M, Hamzaoglu A. The comparison of different radiological methods for the evaluation of flexibility of kyphosis in Scheuermann disease. 16th International Meeting on Advanced Spine Techniques (IMAST), Vienna, 15-18 July 2009.
56. Ozturk C, Enercan M, TEZER M, Aydogan M, Biscevic M, Hamzaoglu A. A new surgical strategy for the treatment of early-onset idiopathic scoliosis. Global Spine Congress 2009, San Francisco, 23-26 June 2009.
57. Hamzaoglu A, Ozturk C, Korkmaz MF, Karatoprak O, Enercan M, TEZER M. A new technique to prevent proximal junctional kyphosis in the surgical treatment of Scheu-ermann disease. Global Spine Congress 2009, San Francisco, 23-26 June 2009.
58. Hamzaoglu A, Ozturk C, Alanay A, TEZER M, Enercan M, Karatoprak O. How to prevent postoperative shoulder imbalance in Lenke type 1 and 3 curves with negative T1 tilt and elevated right shoulder? Global Spine Congress 2009, San Francisco, 23-26 June 2009.
59. Ozturk C, TEZER M, Karadereliler S, Debre M, Enercan M, Hamzaoglu A. Posterior vertebral column resection in congenital thoracic lordoscoliosis. 16th International Meeting on Advanced Spine Techniques (IMAST), Vienna, 15-18 July 2009.
60. Hamzaoglu A, Ozturk C, Alanay A, TEZER M, Enercan M, Karatoprak O. How to prevent postoperative shoulder imbalance in Lenke type 1 and 3 curves with negative T1 tilt and elevated right shoulder? 16th International Meeting on Advanced Spine Techniques (IMAST), Vienna, 15-18 July 2009.
61. Ozturk C, Karatoprak O, Aksu N, Karadereliler S, TEZER M, Hamzaoglu A. The comparison of different radiological methods for the evaluation of flexibility of kyphosis in Scheuermann disease. 16th International Meeting on Advanced Spine Techniques (IMAST), Vienna, 15-18 July 2009.
62. Ozturk C, TEZER M, Karadereliler S, Debre M, Enercan M, Hamzaoglu A. Posterior vertebral column resection in congenital thoracic lordoscoliosis. Eurospine 2009, War-saw, 21-24 October 2009.
63. Hamzaoglu A, Ozturk C, Alanay A, Biscevic M, Karadereliler S, TEZER M. New strategy and decision making of whether the fusion should stop at L5 or extend to sa-crum in the surgical treatment of neuromuscular scoliosis associated with severe pelvic tilt. North American Spine Society 24th Annual Meeting, San Francisco, 10-14 Novem-ber 2009.
64. Alanay A, Ozturk C, Aydogan M, TEZER M, Ganiyusufoglu K, Hamzaoglu A. Hemi-vertebra resection via posterior approach in young children with congenital deformities. 17th International Meeting on Advanced Spine Techniques (IMAST), Toronto, 21-24 July 2010.
65. Hamzaoglu A, Alanay A, Ozturk C, Enercan M, TEZER M, Aydogan M. Selective thoracic fusion in AIS by using pedicle screw constructs (PS): Which factors influence spontaneous lumbar correction? 17th International Meeting on Advanced Spine Tech-niques (IMAST), Toronto, 21-24 July 2010.
