| AO Trauma Japan 監事 |
2021.07 - |
| AO Trauma Japan 副理事長・研究開発委員長 |
2018.03 -2021.06 |
| AO Trustee (Board member) | 2016.07 - |
| AO Trauma Japan 研究開発委員 |
2015.04 - |
| AO Trauma Japan 理事 |
2013.03 -2021.06 |
| AO TC - Asia Pacific Expert Group (ASEG) | 2012.05 - |
| AO Trauma Japan 教育委員 | 2011.03 - 2013.03 |
| AO Trauma Japan 顧問 | 2017.03 - |
| AO Trauma Japan 監事 | 2012.03 - 2017.02 |
| AO TK Working Group - Asian Trauma Working Group (ASWG) | 2006.06 - 2012.05 |
| AO Trauma Asia Pacific Chairman | 2007.04 - 2012.02 |
| AO Trauma International Board | 2007.04 - 2012.02 |
| AO Trauma (旧AO AA Chapter) Japan 幹事 | 2008.03 - 2012.02 |
| AO AA Japan Chapter 会長 | 1998.04 - 2008.02 |
| AO Trustee (Board member) | 1999.06 - 2007.06 |
| Vice President of AO East Asia | 2002.10 - 2006 |
| AO Foundation Board Member Trauma Expert | 2024.07 - |
| AO Trauma Asia Pacific Board Chairperson | 2021.07 - 2024.06 |
| AO Trauma Asia Pacific Chairperson Elect | 2020.07 - 2021.06 |
| AO TK | |
| - Next TomoFix Task Force Chairman | 2021.02 - 2024.06 |
| - Pelvic and Joint Preservation GEC member | 2021.02 - 2024.06 |
| - Next Generation Plating Task Force | 2021.01 - 2024.03 |
| AO Trauma Japan 研究開発委員 | 2020.01 - |
| AO Trauma Japan 顧問 | 2019.03 - |
| AO Trauma Japan 理事長 | 2008.03 - 2019.02 |
| AO TK - Pelvic Expert Group (PEEG) |
2009.04 - 2015.12 |
| AO Trustee (Board member) | 2007.06 - 2012.06 |
| AO AA Japan Chapter 副会長 | 1998.04 - 2008.02 |
| AO AA Japan Chapter 開発委員長 | 2005.10 - 2008.02 |
| AO TK - Asian Trauma Working Group (ASWG) | 2006.06 - 2009.04 |
| Steering Committee Member of AO East Asia | 2002.10 - 2006 |
| AO Trauma Japan 教育委員 |
2017.03 - |
| AO Trauma Japan 教育委員 |
2017.03 - |
| AO Trauma Japan 教育委員 |
2024.02 - |
| AO Trauma Japan 教育委員 |
2017.03 - |
| AO Trauma Japan 教育委員 |
2017.03 - |
| AO Trauma Japan 教育委員 |
2017.03 - |
| AO Trauma Japan 教育委員 |
2017.03 - |