Dr. Benjamin Rosenberg

Orthopedic Surgeon
Dr. Rosenberg is a board-certified orthopedic surgeon with
additional fellowship training in orthopedic sports medicine,
shoulder, and knee surgery. He has a certificate of added
qualification (CAQ) in orthopedic sports medicine. He has
practiced orthopedic surgery in Middlebury for 25 years.

Dr. Rosenberg is the orthopedic consultant for Middlebury College athletic teams and orthopedic advisor to the Mad River Glen ski patrol. He is a past-president of the Vermont Orthopaedic Society and the Porter Hospital Medical Staff. He currently serves as the Vermont representative to the American Academy of Orthopedic Surgeons Board of Councilors.

Dr. Rosenberg performed the first arthroscopic ACL reconstruction in Middlebury, along with the first arthroscopic rotator cuff repair, the first arthroscopic labral repair for recurrent shoulder dislocation, the first total shoulder replacement, and the first reverse total shoulder replacement. He also helped develop a total joint replacement program at Porter that offers faster recovery and shorter hospital stays.

Clinical Interests

  • Sports-related injuries of the knee and shoulder
  • Arthroscopy and open treatment of knee, shoulder, elbow, and ankle injuries
  • Joint replacement of the knee and shoulder
  • Surgery of the hand


  • Fellowship | Tufts-New England Medical Center, Orthopedic Sports Medicine
  • Residency | University of Massachusetts Medical School, Orthopedic Surgery
  • Medical School | University of Massachusetts Medical School
  • College | Harvard College

Board Certifications | Orthopedic Surgery, American Board of Orthopaedic Surgery

Specialty | Sports Medicine

Watch Dr Rosenberg's Intro Video

Dr. Eric Benz

Orthopedic Surgeon
Dr. Eric Benz joined Dr. Rosenberg in founding Porter Orthopedics in 2002. A 1988 summa cum laude graduate of Middlebury College, was drawn back to the area for its biking, skiing, hiking and quality of life. He graduated from Harvard Medical School in 1994 and received his training in Orthopedic Surgery at the University of Rochester Medical Center from 1995-1999.

Dr. Benz's practice includes evaluation and treatment of problems of the hip, knee, shoulder, elbow, hand, wrist, foot, ankle, and spine. He has a special interest in joint replacement surgery, including anterior approach total hip replacement, custom total knee replacement and partial knee replacement. He also performs fracture treatment, arthroscopic surgery, and hand surgery.

After serving as an officer in the U. S. Air Force Medical Corps, Dr. Benz moved to Middlebury with his wife and four children. .

Clinical Interests

  • Joint replacement
  • Carpal tunnel release
  • Fracture Treatment


  • Residency | University of Rochester, Orthopedic Surgery
  • Medical School | Harvard Medical School
  • College | MIddlebury College, Bachelor of Arts

Board Certifications | Orthopedic Surgery, American Board of Orthopaedic Surgery

Specialty | Orthopedic Surgery

Watch Dr Benz's Intro Video

Get to know our Physician Assistants


Trina L . Wilson, PA-C

Trina Wilson joined Porter Orthopedics in November 2009. She assists in surgery
and performs pre and post-operative patient care. She previously worked at
Brigham and Women’s Hospital in Boston, Massachusetts in general surgery.
While at Brigham, her primary duties included assisting in the operating room
and managing in-patient care. She also served as a preceptor for Harvard
Medical School, where she taught clinical skills to medical and physician
assistant students.

Ms. Wilson graduated from Yale University’s Physician Associate Program in
2003. Prior to her graduate studies, she worked as a registered dietitian at
Massachusetts General Hospital and Dartmouth Hitchcock Medical Center,
with a specialty in critically ill patients. Ms. Wilson is a cum laude graduate
of the University of Vermont and received her bachelor’s degree in nutrition
and dietetics.

She lives in Middlebury with her husband and two children.

Clinical Interests

  • Musculoskeletal care
  • Osteoarthritis management
  • Sports-related injuries


  • Post graduate | Yale University Medical School, Physician Assistant Program, Masters of Medical Science
  • Undergraduate | University of Vermont, Bachelor of Science
  • Board Certifications

Brian Joslin, PA-C

Brian Joslin is a nationally certified physician assistant, and he completed his
graduate degree program at Franklin Pierce University. He is an eighth generation
Vermonter who attended the University of Vermont for undergraduate
studies. He joined the Porter orthopedic practice in 2017 and treats both adult
and pediatric patients with a wide range of orthopedic conditions.

Having previously competed as a junior alpine ski racer and an amateur triathlete
Mr. Joslin has a special interest in sports-related injuries. He lives in Middlebury
with his wife Tracy and their black lab, Rally. He enjoys hiking, skiing, and cycling
throughout the Green Mountains in his free time.

Clinical Interests

  • Sports-related injuries of the knee and shoulder
  • Total joint replacement of the hip, knee and shoulder


  • Post graduate | Franklin Pierce University, Master of Physician Assistant Studies
  • Undergraduate | University of Vermont, Bachelor of Science, Biological Science

Board Certifications

  • AAPA
  • VAPA

Luc Dupuis, PA-C

Luc Dupuis is a nationally-certified Physician Assistant who completed his Masters in Physician Assistant Studies at Northeastern University in 2012. He is a native Vermonter, born and raised in the Northeast Kingdom, who also attended the University of Vermont for his undergraduate studies.

He began his career at Porter Orthopedics in October of 2012, providing treatment to patients of all ages for surgical and non-surgical orthopedic conditions. In 2017, he joined the UVM Medical Center Emergency Department, where he treats many conditions from minor injuries to critical illness. He returned to Porter Medical Center in 2019, to continue his work in orthopedics, while also assuming the role of Clinical Director of Surgical Process Improvement. As a Board Member of the Physician Assistant Academy of Vermont, he works to maintain quality and advancement of the profession.

Mr. Dupuis resides in Shelburne with his wife Francesca, son Sebastien, and their dogs Copper and Diesel. He enjoys many outdoor activities, including mountain biking, kayaking, hiking, and nordic skiing, as well as organized basketball, hockey, and football. You will also find him cruising Vermont roads on his motorcycle.

Clinical Interests:

  • Sports Medicine
  • Orthopedic Trauma
  • Total Joint Replacement
  • Wilderness Medicine
  • Emergency Medicine


  • Northeastern University Master of Physical Assistant Studies
  • University of Vermont - Biological Science