Specialty: Orthopaedic Trauma


Specialty: Orthopaedic Trauma



Orthopaedic Traumatology



> University of California San Francisco/San Francisco General Hospital, San Francisco, CA - Fellowship in Orthopaedic Trauma
> University of Vermont/Fletcher Allen Healthcare, Burlington, VT - Residency in Orthopaedic Surgery
> Drexel University College of Medicine, Philadelphia, PA - Doctor of Medicine
> Dartmouth College, Hanover, NH - Bachelor of Arts

Certifications & Affiliations

American Board of Orthopaedic Surgery - Board Certified
American Academy of Orthopaedic Surgeons - Active Member
Orthopaedic Trauma Association - Active Member
AO Trauma - Active Member

Presentations & Publications


  • Matityahu A, Duffy RK, Goldhahn S, Joeris A, Richter PH, Gebhard F. The Great Unknown—A systematic literature review about risk associated with intraoperative imaging during orthopaedic surgeries. Injury. 2017 Apr 21.
  • Duffy RK, Bernhaneselase E, Morshed S.Pilot Study of Effect of Real-time Dosimetry on Surgeon Radiation Exposure During Operative Repair of Femur and Pelvis Fractures.Poster at the 32nd Annual Meeting of the Orthopaedic Trauma Association, National Harbor, MD, October 2016.
  • Duffy RK, Shafritz AB. Bone Cement. Journal of Hand Surgery American, 2011 June; 26(6): 1086-8.
  • Bartlett CS, Hahn JC, Hall J, Duffy RK. Fractures of the Tibial Pilon. In Skeletal Trauma; Basic Science, Management, and Reconstruction, Fifth Edition. Saunders. 2014.


  • Duffy RK. Pelvic Injuries. Concord Hospital.Concord, NH. October 25th 2018.
  • Duffy RK. Pilon fractures. SUNY Downstate Department of Orthopaedics Grand Rounds, Brooklyn, NY. May 11th 2017.
  • Duffy RK. Open Fractures in 2016. SUNY Downstate Department of Orthopaedics Grand rounds, Brooklyn, NY. May 13, 2016.
  • Duffy RK. Non-operative Management of Common Lower Extremity Fractures. Musculoskeletal Seminar for PCPs. Orthopaedic Trauma Institute. San Francisco, CA December 9, 2014.
  • Duffy RK. Acute Compartment Syndrome. Copley Hospital Emergency Department Education Day. Morrisville, VT. April 2014.
  • Duffy RK. Bone Architecture of the Lumbar Pedicle: Can We Measure Cortical Thickness with Spiral Computed Tomography? University of Vermont Research Day. Burlington, VT June 14, 2013.
  • Duffy RK. Open Fractures. University of Vermont Department of Orthopaedics Grand Rounds. May 30, 2013.
  • Duffy RK. Pediatric Supracondylar Humerus Fractures. University of Vermont Department of Orthopaedics Grand Rounds. February 2, 2012.
  • Duffy RK. Surgical Tourniquets in Orthopaedics. University of Vermont Department of Orthopaedics Grand Rounds. March 31, 2011.


The outdoors, biking, skiing, and good food!


  • "Great surgery with Dr. Duffy!"
    - A. | November 2017 | November 2017
  • Excellent bedside manner

    Dr. Duffy has an excellent bedside manner. He is clearly very competent and knowledgeable. I always felt I was in good hands with him.

    - Annonymous | Concord, NH

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To our Patients, Families and Communities,

Your health, welfare & safety are paramount when you come for an appointment at any of our facilities. We are closely monitoring the guidance of the World Health Organization and the Centers for Disease Control & Prevention regarding the spread of the virus. Our focus is to ensure we meet our patient’s needs while doing our part to keep you, our associates, and our communities safe. Effective immediately, the Acute Injury Clinic (AIC), will remain open Monday-Friday from 9 a.m. - 4 p.m. The AIC will NOT open on Saturdays.

At this time, the impact to our communities has been minimal and our staff is focused on providing the orthopaedic care our patients expect and deserve. If you have an appointment with us, we respectfully ask that you let us know if you have a fever, cough, and/or shortness of breath in advance of your appointment. Also, if you have recently traveled to or been in close contact with anyone who has traveled outside of New Hampshire, especially to New York State, we ask that you avoid visiting our practice for a period of 14 healthy days.

Thank you for your continued trust in COPA. We appreciate your cooperation as we work to support the health of our patients & employees.


Ron Chorzewski