Feb. 1992. – Feb. 1993. Intern at Severance Hospital, Yonsei University
Feb. 1993. – Feb. 1997. Resident at Severance Hospital, Yonsei University
May 2000. – Feb. 2003. Research Instructor of Spine, Neurosurgery, Gangnam Severance Hospital
Mar. 2003. – Feb. 2007. Assistant Professor of Spine, Neurosurgery, Gangnam Severance Hospital
Mar. 2005. – Aug. 2006. Training at Emory Univ. Spine Center, Atlanta, USA
Mar. 2007. – Mar. 2012. Associate Professor of Spine, Neurosurgery, Gangnam Severance Hospital
Sep. 2008. – Aug. 2010. Head of Education Department, College of Medicine, Yonsei University
Sep. 2010. – Aug. 2012. Head of Gangnam Department, College of Medicine, Yonsei University
Sep. 2014. – Aug. 2016. Head of Medical Studies Department, Yonsei University
Sep. 2016. – Aug. 2018. Public Relations Manager, Gangnam Severance Hospital
Mar. 2012. – Currently Professor of Spine, Neurosurgery, Gangnam Severance Hospital
Mar. 2018. – Currently Head Professor of Department of Medical Devices Industry, Graduate School
Sep. 2018. – Currently Vice President of Research Department, Gangnam Severance Hospital
Sep. 2018. – Currently Deputy Head of Gangnam College of Medicine, Yonsei University
Sep. 2018. – Currently Head of Clinical Trials Office, Gangnam Severance Hospital

1986 – 1992 Bachelor, College of Medicine, Yonsei University
1997 – 1999 Masters, College of Medicine, Inha University
2001 – 2004 M.D., College of Medicine, Yonsei University

[Academic Activities Outside of School] • Member of the Korean Neurosurgical Society • Member of Korean Spinal Neurosurgical Society • Member of Korean Cervical Spine Research Society (CSRS) • Member of World Cervical Spine Research Society • Member of North American Spine Society (NASS) • Formal Jury at Korea Research Foundation • Finance director of Korean Spinal Neurosurgical Society • Trustee of director of Korean Spinal Osteoporosis Research Society [Research Tasks] • 2003 Yonsei University New Professor Research Grant Study on neurotization of spinal-cord injury after transplant of the Brain-derived neurotrophic factor(BDNF) and bone marrow cells • 2005 University Professor Overseas Visit Research Support (Korea Research Foundation) Regeneration of disk pulpy nucleotoxin using bone marrow stem cell transplants and tissue biomechanics • 2006 Yonsei University College of Medicine-Long-term Overseas Training Research Fund Comparative analysis of SGAG formation and Chondrogenic MRNA Expression for recurring disks and degenerative disks due to disk regeneration • 2009 Yonsei University College of Medicine-General Professor Research Grant Differences in the regenerative function of the degenerative disks and non-degenerative disks during cytotherapy using cytokine • 2011 AO Spine Foundation Grant Cytotoxicities of contrast agent for discogram and disc staining agent for endoscopic surgery on human nucleus pulposus cells • 2012 Korea Research Foundation Research Grant Comparative study on cytotoxicity of four different contrast dye in human nucleus pulposus cell

[Thesis]
• Biologic Response of Degenerative Living Human Nucleus Pulposus Cells to Treatment with Cytokines
YONSEI MEDICAL JOURNAL 56/1 :277-286,2015
• Which iodinated contrast media is the least cytotoxic to human disccells?
SPINE JOURNAL 15/5 :1021-1027,2015
• Anterior Cervical Discectomy and Fusion Alters Whole-Spine Sagittal Alignment
YONSEI MEDICAL JOURNAL 56/4 :1060-1070,2015
• Bone Mineral Density Changes after Orchiectomy using a Scrotal Approach in Rats
Korean Spinal Neurosurgery Society Scholarly Journal 12/2 : 55-59,2015
• Prevalence, Distribution, and Significance of Incidental Thoracic Ossification of the Ligamentum Flavum in Korean Patients with Back or Leg Pain : MR- Based Cross Sectional Study
JOURNAL OF KOREAN NEUROSURGICAL SOCIETY 58/2 :112-118,2015
• Minimally Invasive Transforaminal Lumbar Interbody Fusion for Spondylolisthesis: Comparison Between Isthmic and Degenerative Spondylolisthesis
WORLD NEUROSURGERY 84/5 :1284-1293,2015
• Minimally Invasive Transforaminal Lumbar Interbody Fusion in Multilevel: Comparison with Conventional Transforaminal Interbody Fusion
WORLD NEUROSURGERY 85/ :236-243,2016
• A retrospective observational study on the treatment outcomes of 26 patients with spinal cord astrocytoma including two cases of malignant transformation
EUROPEAN SPINE JOURNAL 25/ :1-13,2016
• Association of miR-146a, miR-149, miR-196a2, and miR-499 Polymorphisms with ossification of the posterior longitudinal ligament of the cervical spine
PLOS ONE 11/7 :e0159756-,2016
• Paraspinal muscle, facet joint, and disc problems: risk factors for adjacent segment degeneration after lumbar fusion
SPINE JOURNAL 16/7 :867-875,2016
• Changes in bone metabolism in young castrated male rats
YONSEI MEDICAL JOURNAL 57/6 :1,386-1,394,2016
• Joint kinematics of surgeons during lumbar pedicle screw placement
INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY 12/4 :701-709,2016
• A nationwide retrospective study of opioid management patterns in 2,468 patients with spinal pain in Korea
Asian Spine Journal 10/6 :1,122-1,131,2016
• Critical Values of Facet Joint Angulation and Tropism in the Development of Lumbar Degenerative Spondylolisthesis: An International, Large-Scale
Multicenter Study by the AOSpine Asia Pacific Research Collaboration Consortium
Global Spine Journal 6/5 :414-421,2016
• The Influences of Different Ratios of Biphasic Calcium Phosphate and Collagen Augmentation on Posterior Lumbar Spinal Fusion in Rat Model
YONSEI MEDICAL JOURNAL 58/2 :407-414,2017
• Management of Esophageal and Pharyngeal Perforation as Complications of Anterior Cervical Spine Surgery.
WORLD NEUROSURGERY 102/ :275-283,2017
• A Rare Case of Aggressive Melanotic Schwannoma Occurred in Spinal Nerve of a 59-Year-Old Male
Journal of Pathology and Translational Medicine 51/5 :505-508,2017
• Late-Developing Metastatic Malignant Melanoma in the Thoracic Spine Originating from Choroidal Melanoma
Korean Spinal Neurosurgery Society Scholarly Journal 14/2 :53-56,2017
• Herniated Discs at the Cervicothoracic Junction
WORLD NEUROSURGERY 118/118 :651-658,2018
• Treatment outcomes of 17 patients with atypical spinal meningioma, including 4 with metastases: a retrospective observational study.
SPINE JOURNAL Epub ahea :-,2018
• Does minimally invasive fusion technique influence surgical outcomes in isthmic spondylolisthesis?
MINIMALLY INVASIVE THERAPY & ALLIED TECHNOLOGIES 28/ :1-8,2018

[Awards]
•. 2006 Korean Neurotraumatology Academic Award
•. 2008 Outstanding Clinical Instruction Award, Gangnam Severance Hospital
•. 2012 Korean Spinal Neurosurgery Society Rami Kim Young Su Academic Award
•. 2014 Korean Spinal Neurosurgery Society Basic Studies Academic Award