2003-2004 Internship, Yonsei University, Seoul, Korea 2004-2008 Residency, Department of Orthopedics Yonsei University, Seoul, Korea 2011-2012 Fellowship, Spine Department of Orthopedics Yonsei University, Seoul, Korea 2013-2017 Assistant professor, Spine, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University, Gyeonggi-do, Korea 2018-present Associate professor, Spine, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University, Gyeonggi-do, Korea