Get to know the AO Past Presidents
Florian Gebhard
(2021–23)
Gebhard has decades of experience as a clinician and educator, leading fellow surgeons in support of the AO mission of promoting excellence in patient care and outcomes in trauma and musculoskeletal disorders. He has been a member of the AO Foundation Board (AO FB) since 2012, served as AO Trauma Germany Vice President (2013–18) and is currently—after having served as AO President from 2021 until summer 2023—AO Immediate Past President.
Robert McGuire
(2018–21)
McGuire has served the AO in a wide range of leadership roles: AO North America (AO NA) President (2015–16), AO NA Spine Board member since 2003, InSpine editor since 2004, member of the AO NA Degenerative Spine Committee since 2005, AO NA Chairperson from (2006-09), AO Technical Commission (AO TC) Spine member and chairperson, and member of the AO Technical Commission Executive Board (AO TCEB) from 2010 to 2016. He has been deputy editor of Global Spine Journal since 2021 and served as AO President from 2018 to 2021.
Nikolaus Renner
(2016–18)
After graduating from medical school at the University of Basel, Switzerland, Nikolaus Renner worked at the Laboratory for Experimental Surgery, Davos, Switzerland. From 1982−88 he worked at the Department of Surgery, University of Basel, which was headed by Prof Martin Allgöwer until 1983.
In 1990 Renner was a clinical instructor and international faculty member at Jackson Memorial Hospital, University of Miami, FL, United States, delegated by AO International. From 1991−93 he was a senior physician in general surgery at the Department of Surgery, University of Basel. From 1993−2021 he was head of traumatology at Kantonsspital Aarau, Switzerland.
At the AO, Renner started as an assistant table instructor at an advanced course during the 1983 AO Davos Courses. He served as faculty at over 200 AO courses worldwide (1992−2019). He has been a member of the Board of Trustees since 2002 and has served in various roles at the AO: Specialty Academic Council General Trauma Chairperson, member of the Academic Council of the AO Foundation, AO Trauma Research and Development Commission Chairperson, member of the AO Research and Development Committee, member of the AO Trauma Transition Board, AO Trauma International Board Chairperson, and AO President (2016−18). Since 2020, he has been vice president of the AO Alliance Board of Directors.
Suthorn Bavonratanavech
(2014–16)
In December 1978, he attended his first AO Basic Principles course in Davos, Switzerland. Thereafter, he became a regular participant at the AO Davos Courses. In 1982 he was an AO Fellow at Kantonsspital Basel, Switzerland. In the 1980s, he became AO Faculty and began to travel all over Asia and globally to lecture. He has been a member of the AO Assembly of Trustees since 1988 and has served in several leadership roles: member of the AO Academic Council (1992–99), AO East Asia President (1994–99), and AO Trauma Asia Pacific Education Commission Chairperson (2007–09). He was AO President from 2014 to 2016 and a member of the AO Alliance Foundation Board of Directors from 2017 to 2019.
Jaime Quintero
(2012–14)
Quintero has served the AO many capacities: He has been a member of the AO Assembly of Trustees since 1988, the Alumni Association Colombia Chapter President (1993–98), AO Latin America Chairperson (1999−2003), a member of the AO Education Commission, AO International Commission, the AO Socio-Economic Committee, the AO Alumni Association (1992−2009), and the AO Academic Council (1995−2001). He has been a member of AO Spine and AO Trauma since 2007 and 2009, respectively. Quintero was AO President from 2012 to 2014, founder and a member of the AO Alliance Foundation Board of Directors (2014–16), and since 2020 has been a member of the AO Access Steering Committee. He has been a volunteer member of Patrulla Aérea Civil de Bogotá PAC, a health flying mission in Bogotá, since 1998.
Norbert Haas
(2010–12)
Since his first contact with the AO in the 1970s, Haas has played an important role in the organization’s development as an AO Trustee since 1994 and AO Technical Commission Trauma Chairperson, AO President (2010–12), and in the progression of AO Recon from an initiative into a full-fledged clinical unit. In addition to his professional activities, Haas has served as a volunteer member on the management and advisory boards of many national and international scientific organizations. In 2012, he was awarded the Order of Merit of the Federal Republic of Germany, 1st class, for his many years of volunteer work.
Paul Manson
(2008–10)
As one of the first surgeons to use the then-new Synthes titanium implants for maxillofacial surgery in his country, Manson pioneered the AO philosophy of craniofacial surgery in the United States. He has been active as AO Faculty and course chairperson since the mid-1980s and was the driving force in creating the North American Maxillofacial Education Committee in 1988, serving as its first chairman for several years. Manson served as a member of the AO’s Academic Council (1994–99) and the AO Foundation Board (2003–06), and as AO President (2008–10). Since 2010, he has worked as a cofounder and board member of the AO Neuro initiative, now known as Global Neuro.
Chris van der Werken
(2006–08)
In addition to being a member of the Orthopaedic Trauma Association, he is affiliated with several other associations. He is an honorary member of AO Latin America and the Asociación Argentina del Trauma Ortopédico among others. He is a member of the AO Assembly of Trustees, a founding member of the AO Alliance, and from 2001 to 2006 was a member of the AO Alliance Board of Directors. Additionally, he coedited a best-selling 2006 book, Resident's Handbook: Orthopaedic Trauma Care, with Piet de Boer. In 2008, during the final year of his term as AO President, AO CMF and AO Trauma were established and the AO celebrated its 50th anniversary.
James Kellam
(2004–06)
Kellam’s many contributions to the AO include his service as editor of AO Dialogue, AO North America (AO NA) Trauma Fellowship Committee Chairperson (2011−16), and as a member of the AO Ethics and Compliance Committee (2014−18). He served as AO President from 2004−06.
René Marti
(2002–04)
In 2003, Marti was appointed Knight in the Order of the Netherlands Lion for his contributions to the development of orthopedics and for introducing the treatment of bone fractures with screws and plates in the Netherlands. He retired from his academic career in 2004 but stayed active in his private practice in St Moritz for a few more years. Marti was a passionate art collector and ran a gallery in Amsterdam, with his wife, Doris. He cofounded the Marti-Keuning-Eckhardt Foundation for the benefit of orthopedic research and cultural projects.
Peter Matter
(2000–02)
In 1971, Matter joined Spital Davos as its medical director and head of surgery. He remained at the helm until his retirement in 1994. Matter led extensive studies in alpine ski equipment and accidents, collaborating with the Basel teaching staff and Prof Stephan Perren from the AO’s Laboratory of Experimental Surgery Davos—now known as the AO Research Institute Davos (ARI)—to organize courses to further this research. Beginning in the 1980s, he organized the AO Davos Courses for about 15 years. In 1982, he became president of AO Switzerland. He chaired the AO’s Documentation Center (1988), established AO Publishing (1997), and served as president of AO International (1993−99), the AO’s educational institute at that time. Matter was AO President from 2000 to 2002. In 2007, he received the Davos Crystal for his life’s work.
Joseph Schatzker
(1998–2000)
Schatzker has been involved with the AO since 1967, when he spent a fellowship year with Maurice Müller in Switzerland. He translated the first AO manual, the AO Manual of Operative Fracture Treatment (1970) into English and helped spread the AO’s method and message in North America and globally as a speaker. He served as AO President from 1998 to 2000 and became an AO Honorary Trustee in 2000. Additionally, he served the AO as senior editor of AO Surgery Reference (2008−18) and is the author of Maurice Edmond Müller—in His Own Words (2018).
Chris Colton
(1996–98)
Colton became involved with the AO while working as a junior resident in Bristol. In 1967, on the recommendation of Keith Lucas, his chief at the time, he spent six weeks in Chur, Switzerland, working with Martin Allgöwer, Thomas Rüedi, Peter Matter, and Stephan Perren. He was the executive editor of AO Surgery Reference and is a lifetime AO Honorary Trustee, as well as a founding member of the AO Alliance. Since 2011, he has been honored with the University of Nottingham’s Fracture Forum’s annual Chris Colton Trauma Lecture. Colton is an advanced trauma life support (ATLS) instructor and a master diver.
Siegfried Weller
(1994–96)
Weller was a participant of the first AO course and brought the AO techniques and principles to Freiburg and, later, Tübingen. He was a founding member of AO Germany in 1970 and served as president of AO Germany until 1991. In 1974, he was asked by Hans Willenegger to help spread the AO’s message in Asia, and in the following decades frequently traveled to India, Thailand, Indonesia, Japan, and many other countries. He became a mentor for many young orthopedic and trauma surgeons in Asia and was instrumental in developing a strong AO community in the region. Weller was AO President from 1994 to 1996. Among the many honors earned during his career was the Order of Merit of the Federal Republic of Germany, 1st class, in 1988.
Marvin Tile
(1992–94)
Tile was AO President from 1992 to 1994, a period when new regional organizations were being established to supplement the existing national organizations—AO Switzerland, AO Germany, AO Spain, and AO Austria—and other regionally centralized organizations. Under Tile’s presidency, the first new regional organization, AO North America (AONA), was established in June 1992. Among the many awards he has earned is the Order of Canada, the country’s highest civilian honor.
Martin Allgöwer
(1984–92)
Allgöwer was amongst the 13 surgeons who founded the Arbeitsgemeinschaft für Osteosynthesefragen, later to become the AO, in 1958. He privately financed a small research laboratory for tissue culture and burn studies in Davos, which was newly established as the Laboratory for Experimental Surgery, the AO’s first research institute, in 1959. Allgöwer was its first director. In 1967, Allgöwer was appointed professor of surgery at the University of Basel and created Switzerland’s first surgical department. He was instrumental in the creation of the AO Foundation and in 1984 was elected as the first AO President, a position he held until 1992. In 1988, he and fellow AO founders Maurice Müller and Hans Willenegger were awarded the Marcel Benoist Prize, the highest scientific recognition of the Swiss Government, recognizing "the extraordinary achievements for a new type of trauma surgery, which has helped thousands upon thousands of patients to heal more quickly and without complications, and which is now being imitated worldwide."