Steering Board

Mandated by the AO Foundation Board, these five are well-connected heavyweights in the orthopedic world. As AO Recon's patrons they employ their excellent recon expertise and long years of AO involvement to represent the interests of AO Recon within the AO Foundation.


Carsten Perka AO Recon arthroplasty surgeon

Carsten F Perka

Charité Berlin


Carsten Perka is Chairman of the Orthopaedic Department and Director of the Center for Musculoskeletal Surgery at the Charité, University Medicine Berlin. He published more than 375 peer-reviewed papers and co-authored over 30 chapters in medical textbooks, including the comprehensive standard work "Periprosthetic Fracture Management". Perka is currently President of the German Association of Orthopaedics and Orthopaedic Surgery, Secretary General of the German Society for Endoprosthetics and Speaker of the German Endoprosthesis Register.

Past Chairperson:

Norbert Haas AO Recon arthroplasty surgeon

Norbert P Haas

Charité Berlin


Norbert Haas was Director of the Center for Musculoskeletal Surgery, Department of Trauma and Reconstructive Surgery and Department of Orthopaedics at the Charité, University Medicine Berlin until his retirement in 2016. He was president of numerous scientific societies and the AO Foundation President from 2010-2012. As an early member he has a long active history in the AO Foundation which continues.


Daniel Berry AO Recon arthroplasty surgeon

Daniel J Berry

Mayo Clinic Rochester


Daniel Berry is Professor at the Mayo Clinic in Rochester, Minnesota, where he was Chief of Orthopedic Surgery for the past ten years. He served as Director of the American Board of Orthopaedic Surgery, as the Chairman of the Maurice E. Müller Foundation, President of the Mid-America Orthopaedic Association, President of the American Association of Hip and Knee Surgeons, and President of the American Academy of Orthopaedic Surgeons.

Keith Mayo AO Recon arthroplasty surgeon

Keith Mayo

University Hospital Washington


Keith Mayo is Clinical Professor at the Hansjörg Wyss Endowed Chair for the Advancement of Hip and Pelvis Surgery in Seattle, WA. His 30 + year career has encompassed all aspects of hip and pelvis care including complex trauma, joint replacement and a progressive focus on hip preservation. He has a career long involvement in surgeon education and clinical research and is involved in numerous associations.

Bas Masri AO Recon arthroplasty surgeon

Bas A Masri



Prof Bas Masri is Head of the Department of Orthopaedics at the University of British Columbia, and Head of the Department of Orthopaedics at Vancouver Acute (Vancouver General and University Hospitals). He is past president of the Canadian Orthopaedic Association, a fellow of the American Academy of Orthopaedic Surgeons, a fellow of the American Orthopaedic Association, as well as a member of the Knee Society and the Hip Society.

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Nominated by the Education Forum, these expert groups of arthroplasty surgeons develop educational content for AO Recon courses.

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Nominated by the Steering Board, these key opinion leaders take strategic leadership for AO Recon's educational content.


Selected by the Education Forum, these experts engage in AO Recon events to provide surgeons with excellent arthroplasty education.