Past president of various national and regional associations including Malaysian Orthopaedic Association (MOA), (2005 - 2006) and ASEAN Arthroplasty Association (AAA)
Examiner of Fellowship in Arthroplasty, Ministry of Health (MOH), Malaysia - Journal reviewer of Malaysian Orthopaedic Association (MOA)
Invited speaker and presenter at various national and international meetings.
Assoc. Prof. (C) Dr. Ruslan Nazaruddin Simanjuntak
Assoc. Prof. (C) Dr. Ruslan Nazaruddin Simanjuntak