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About Dr. John Antoniou

MD, PhD, FRCSC, FAAOS
Orthopaedic Surgeon | Hip & Knee Specialist
Professor at McGill University

Dr. John Antoniou is one of Canada’s leading orthopedic surgeons, internationally recognized for his expertise in hip and knee replacement surgery.

He has performed over 15,000 procedures and holds dual membership in the Hip Society and International Hip Society—a distinction shared by only 20 surgeons worldwide.

Based in Montreal, he serves as Professor of Surgery and Research Director at McGill University, while also offering private, personalized surgical care through his practice at Ortho Westmount. Patients across Quebec, Canada, and abroad seek his advanced expertise and faster access to care.

Credentials & Training

MD – McGill University
PhD in Experimental Surgery – McGill University
Orthopaedic Surgery Residency – McGill University

Fellowships in hip, knee & shoulder reconstruction at:

  • University of Washington (Seattle)
  • Rush University (Chicago)
  • University of Pennsylvania (Philadelphia)

Certifications:

  • Fellow of the Royal College of Physicians and Surgeons of Canada (FRCSC)
  • Board-Certified Orthopedic Surgeon in the U.S.
  • Fellow of the American Academy of Orthopaedic Surgeons (FAAOS)

Clinical Expertise

Dr. Antoniou combines leading-edge techniques with personalized care to treat complex hip and knee conditions — helping patients regain mobility and return to active lives.

Specializations:

  • Total Hip Replacement
  • Hip Resurfacing (bone-preserving for younger patients)
  • Total Knee Replacement
  • Complex Revision Surgeries

Key Advantages:

  • 15,000+ joint procedures performed
  • Minimally invasive techniques
  • Use of advanced, durable implants
  • Private surgery options for quicker access

Research & Publications

A nationally funded clinician-scientist, Dr. Antoniou has authored over 200 peer-reviewed publications and presented at 250+ international conferences. His work bridges clinical innovation and regenerative research.

Research Focus:

  • Hip and knee implant outcomes
  • Regenerative therapies using stem cells and growth factors
  • Cartilage and disc repair
  • Surgical innovation and implant technologies

Select Achievements:

  • Co-author of Physical Examination of the Shoulder and Knee
  • Lead investigator on long-term implant durability studies
  • 500+ abstracts presented worldwide

Current Roles

  • Professor of Surgery, McGill University
  • Director, Arthroplasty Fellowship Program, McGill
  • Research Director, Division of Orthopaedic Surgery, McGill
  • Orthopaedic Surgeon, Jewish General Hospital
  • Research Director, Orthopaedic Research Lab, Lady Davis Institute
  • Private Practice Surgeon, Ortho Westmount (Montreal)
  • Holds dual membership in the Hip Society and International Hip Society

Awards & Leadership

Past President, Canadian Orthopaedic Association (COA)
Past President, Canadian Orthopaedic Research Society (CORS)

Honors:

  • Chercheur National – Fonds de recherche du Québec – Santé (FRQS)
  • Royal College Gold Medal in Surgery
  • Canadian ORS Founders’ Medal
  • Hansjörg Wyss Award
  • Amorchem Knockout Entrepreneur Award
  • adMare BioInnovations Accelerate Program Winner
  • Omega Award (2018 & 2019) – for academic excellence in fellowship training

Proudly Affiliated With Leading Institutions

Our Private State Of The Art Surgery Centre

At Ortho Westmount, your care goes beyond the procedure. Located in the iconic Westmount Square, our private surgical center offers a welcoming, discreet environment designed for a smooth and stress-free experience. We offer a full-service approach that includes pre-operative consultations, day-of surgery care, and comprehensive post-operative support—all in one location, with no hospital admission required.

Amenities and Features:

  • Private, State-of-the-Art Surgical Suites – Our operating rooms are fully equipped with advanced medical technology to ensure precision, safety, and efficiency.
  • Modern Recovery Rooms – Designed for comfort and tranquility, our recovery areas promote healing and offer privacy for a restful post-op experience.
  • On-Site Consultations and Post-Op Care – From your initial evaluation to follow-up physiotherapy, all services are delivered under one roof by our experienced team.
  • Up to 48 Hours of Private Convalescence – Patients benefit from extended recovery time in our facility with attentive nursing care, helping you transition smoothly to home life.
  • Seamless, Hospital-Free Experience – No hospital admission is needed. Enjoy specialized surgical care in a dedicated orthopedic environment that minimizes wait times and maximizes patient attention.
  • Physiotherapy Services On-Site – Early rehabilitation starts right here, with access to professional physiotherapy immediately following surgery.
  • Discreet and Accessible Location – Our Westmount Square location offers easy access, privacy, and convenience for patients across Montreal and beyond.

Real Stories, Life-Changing Results

Dr. Antoniou was great. I have Paget's in my left hip and femur. Dr Antoniou had operated on people with this problem. He had to so some straightening out for my femur and it worked well. Had to wait for less then a week to have the operation. Would have had to wait at least another year to go through our health system. Was in a situation where I could hardly walk as I had bone on bone. Health care system did not care. Told me to just wait. Can now do fun things with my grandkids.
Don Masse
I was extremely pleased with the surgery and recovery time from my bilateral hip surgery. The post op care was excellent at the clinic and my recovery was uneventful. I followed Dr Antoniou's recommendation to do both hips at the same time as the recovery is only slightly longer than for one hip. He forecasted that I would be back to riding my horse in 4 months after surgery and I was able to achieve that. It's now been 5 months, I'm riding every second day and life is virtually back to normal. It's been a great experience.
Jacek Morawski
I cannot express enough gratitude for the exceptional care I received from Dr. John Antoniou and the entire team at Westmount Square Surgical Center. From my very first consultation to my post surgery recovery, every step of the process was handled with professionalism, kindness and expertise. Dr. Antoniou took the time to explain everything in detail, ensuring I felt confident and informed about my hip replacement surgery. Their skill and precision made all the difference in my recovery.
Roy McLachlan
My experience with a bilateral hip replacement was Excellent! Very professional and highly competent. Dr. Antoniou Explained everything so well which was reassuring to me. Maria and staff were not only prompt but truly comforting to me in answering my questions. I highly recommend Dr. Antoniou and team. Very grateful for a surgery well done! Cynthia gillingham moxness
Ralph Moxness
Dr. John Antoniou is an exceptional surgeon. My experience with having my hip replaced through the Westmount Ortho Clinic was amazing. He, and his team, took the time to thoroughly answer all of my questions to properly prepare me for the surgery. I travelled from Calgary to Montreal because I wanted the best surgeon. I highly recommend Dr. Antoniou to all choosing to have a hip replacement operation.
Karen Brown
Outstanding from the very first phone call. I had a double hip replacement and now 7 months later I’m fully recovered with zero pain and full mobility. Dr Antoniou is a very skilled surgeon and I would not hesitate to recommend.
Elise Williamson

5-Star Average on

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