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Michael Baumgaertner, MD

Professor of Orthopaedics and Rehabilitation

Contact Information

Michael Baumgaertner, MD

Patient Care Location

Office Location

Mailing Address

  • Orthopaedics & Rehabilitation

    P.O. Box 208071

    New Haven, CT 06520-8071

    United States



Michael R. Baumgaertner, M.D., is fracture surgeon who is Professor of Orthopaedic Surgery & Rehabilitation. He serves as Chief of the Orthopaedic Trauma Service at Yale-New Haven Hospital, where he has practiced for more than 25 years, treating patients with severe fractures, fracture complications, and worn out joints.

Following a childhood in Minnesota, Dr. Baumgaertner graduated from Stanford University with a degree in Art History. He attended the University of California (San Diego) Medical School as a Regent’s Scholar where he earned his M.D. He then did his orthopaedic surgery residency at the University of California (San Francisco), following that he completed a one-year fellowship in plastic and reconstructive surgery at the University of Massachusetts Medical Center in Worcester, Massachusetts. He joined the Faculty of the Yale School of Medicine in 1988.

Dr. Baumgaertner’s landmark 1995 publication on hip fracture fixation performed at Yale initiated his international recognition. The measurement he described at that time has been validated repeatedly and remains the universal standard. He has authored numerous original articles and chapters in orthopaedic textbooks. He has lectured and taught residents in training and practicing surgeons on five continents optimal surgical fracture care.

He has served as Chairperson of Education for both the Orthopaedic Trauma Association and AO North America, was elected President of AONA, and served as the Chairperson of the Board of Directors. of AO North America, a non-profit organization of more than 1000 surgeons that is dedicated to the optimal care of patients with fractures and/or deformity. He is a Trustee of the AO Foundation, an international group of more than 15000 surgeons, and is currently serving as Chair of the AO Trauma International Board.

His academic career notwithstanding, Dr. Baumgaertner is a surgeon dedicated to the recovery of his injured patients: Providing technically expert surgical repair, as well as the education and counseling necessary to heal not only the patient’s fracture, but also the lifestyle.

Education & Training

  • guest AOfellow
    AO Center Kantonspital, (1989)
  • Fellow
    University of Massachusetts Medical Center (1988)
  • Resident
    University of California at San Francisco (1987)
  • Resident
    University of California, San Francisco (1984)
  • MD
    University of California, San Diego (1982)
  • AB
    Stanford University, Art History (1978)


  • AOSurgery Reference (AOSR)Executive Editors Annual Meeting
    Reykjavík, Iceland 2017
    Review/ assess budget new and recurring projects within AOSR
  • Nonunion Management, AO Education, Proximal Femur Fractures
    Montreal, QC, Canada 2017
    Graduation weekend
  • Korea 43rd Annual meeting of Korean Fracture Society
    Gyeongju-si, Gyeongsangbuk-do, South Korea 2017
    Keynote lectures 1) Managing Femoral Trochanteric Fractures, 2) Mechanical causes of Nonunion
  • AOTNA Basic Principles of Fracture Management Course “Unique learning resources of the AO Foundation”
    Dallas, TX, United States 2017
    Lecture “Unique learning resources of the AO Foundation” and coaching for the faculty
  • AOFoundation/AOTrauma Masters Course- Complications International faculty
    Mumbai, MH, India 2016
    1) “Violation of AO principles;” 2) “Osteoporotic fractures around the knee 3) Chairperson, Faculty coaching program
  • Pro-C
    Barcelona, CT, Spain 2016
    Association for Medical Education in Europe (AMEE) Conference
  • 42nd Annual Japanese Society of Fracture Repair annual meeting, AOT Seminar
    Tokyo, Tokyo, Japan 2016
    Invited Keynote lecture “Management of Trochanteric Fractures”
  • XXII Congresso Brasileiro de Trauma Ortopedico
    Maceió, AL, Brazil 2016
    1)Tips and technical tricks for trochanteric fractures; 2) Prevention and treatment of tibia shaft malunion; 3)Salvage of mismanaged proximal femur fractures.
  • AO Lower Extremity master's Course
    São Paulo, SP, Brazil 2015
    Invited International guest to teach at regional psycho-motor fracture management course
  • AOTrauma Advanced Fracture Care Management Course
    Wuhan, Hubei, China 2012
    International invited faculty to teach advance fracture management principles
  • AO Master's Fracture Managagement course
    Agra, UP, India 2008
    International invited faculty to teach advance fracture management principles
  • Visiting Consultant Surgeon Middlemore Hospital
    Auckland, Auckland, New Zealand (2002-2003)
    Sabatical work in Auckland, NZ
  • AONA Algower Traveling Fellowship
    Bern, BE, Switzerland; Edinburgh, Scotland, United Kingdom; Los Angeles, CA, United States (1997-1998)
    Competitive award to work in Trauma Centers of excellence for up to 3 months
  • AO Fellow & Illizarov fellow
    Chur, GR, Switzerland; Lecco, Lombardy, Italy 1989
    learned advanced fracture care techniques

Honors & Recognition

AwardAwarding OrganizationDate
Distinguished Clinical Career AwardYale School of Medicine and Yale Medicine2022

Professional Service

GLOBAL AO FOUNDATION dedicated to optimal care of musculoskeletal traumaI have served this global organization for 25+ years with increasing responsibilities, and will continue to do so. Initially as a teacher and subsequently course organizer & developer and now focused on developing faculty skills. I serve as a Trustee of the AO Foundation, Executive Editor of the AOTrauma Surgical Reference and am currently Chair of the AOTrauma International Board, among other duties.1989 - 2017
AO North AmericaJoining as a participant then faculty then Education Committee member then Chair, ultimately becoming President of AONA from 2011-15 I now serve as Chairman of the Board of Directors of AONA, a 501(c)3 and 501(c)6 based in PA, it is the regional representation of the AOFoundation in US and provides education and career opportunities for all medical professionals involved in the care of musculoskeletal injury.1988 - 2017

Departments & Organizations