2015 A hands-on cadaveric course by Medtronic (Seoul, Korea)
2014 EUROSPINE 2014 (Lyon, France)
2014 The 13th Kyushu and Ho-Youngnam Neurosurgical Joint Meeting in Daegu (Comparative Analysis Between Total Disc Replacement and Posterior Foraminotomyfor Posterolateral Soft Disc Herniation with Unilateral Radiculopathy : Clinical and Biomechanical Results of A Minimum 5 Years Follow-Up )
2014 Principles of minimally invasive decompression and fixation by Medtronic (Seoul, Korea)
2013 APCSS (Asian pacific cervical spine society) annual meeting in Sapporo (Sapporo, Japan)
2013 Anterior cervical discectomy and fusion using a stand-alone polyetheretherketone cage packed with local autobone : assessment of bone fusion and subsidence (J Korean Neurosurg Soc, 2013)