- Kyung Hee University, College of Medicine faculty member
- President of Pusan National University Alumni Association
- Chairman of Orthopaedic Surgery
- Study chairman of Visiting Professor of Medicine, Pusan National University
- Visiting Professor in Busan, Sungkyunkwan, Korea, Kyung Hee University
- American Institute of microsurgical training UC Sandiego University Hospital
- America training of Glendpeed David Hospital
- Artificial Joint Center for University Hospital of Freiburg, Germany Training
- Member of the World Society for micro-surgery
- Consultant of Green Doctors
- Green Doctors Advisory Committee (current)
- President of Kang-Dong Hospital (at present)
진료과목: