He is an active member of a number of learned societies, including the International Society for the Study of the Lumbar Spine (ISSLS) of which he was Secretary from 2005 to 2008, the Spine Society of Europe (SSE) of which he was President in 2008, the Spine Society of Australia (SSA) and the North American Spine Society (NASS). He is Editor-in-Chief of the European Spine Journal and is a member of the Board of the EuroSpine Foundation. He has many publications to his name as well as books and book chapters. As a lecturer he tours the world and is still active in basic research particularly in the field of Chiropractic.