- Chief of Trauma service at Royal Thai Army hospital from1992-1997
- Orthopaedic Surgeon at Bangkok hospital during 1998-2002
- Orthopaedic Surgeon at Bumrungrad hospital during 2002-2011
- President of Royal College of Orthopaedic Surgeon of Thailand 2004 -2006
- Corresponding member of German Trauma Society since 2006
- President Asean Orthopaedic Association 2005-2006
- Chairman Education AOTAP 2007-2009
- Member of Board Director AO Foundation 2006-2012
- President Elect AO Foundation 2012-2014
- President AO Foundation 2014-2016
- Past President AO Foundation
- Honorary member Hungarian Trauma Society since 2015
- President of Thai Osteoporosis Foundation 2010-2012
- Senior director Orthopedic Bangkok Hospital 2011-2015
- Chief of BDMS Orthopedic and Trauma Care Network 2015-2020