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Dr. Morgan Silldorff Orthopedic Surgeon

Dr. Morgan Silldorff

Dr. Morgan Silldorff specializes in lower extremity joint reconstruction including partial and total knee replacements as well as total hip replacement. He completed his undergraduate, medical, and orthopedic residency training at the University of California, San Diego before completing a fellowship in lower extremity arthroplasty at the University of Southern California. His fellowship included a heavy emphasis on complex primary, revision, and robotic-assisted joint replacement, peri-prosthetic fracture fixation, and peri-prosthetic joint infection management. Dr. Silldorff brings his state-of-the-art expertise in joint replacements to the North County population.

Dr. Silldorff was born and raised in San Diego and takes pride in having taken care of his neighbors and community throughout his years of training. He understands the importance of connecting with patients to make sure their needs are heard and are fully informed in order to make treatment decisions that are the best for them. He offers small incision, computer- and robot-assisted surgery, and non- narcotic pain control modalities to guide patients through the surgical process with the best results possible.

In his spare time, Dr. Silldorff enjoys spending time with his family, rooting for San Diego sports teams, offshore fishing, and camping. He is also active in Operation Walk, an international medical mission that provides joint replacement in poverty-stricken areas around the world. Orthopedic Specialists of North County (OSNC), was founded in Oceanside in 1965 and incorporated in 1973. Over the years, we have treated multi- generations of families, including parents, grandparents and great-grand-parents for their orthopedic injuries and ailments.

Our 14 board-certified physicians care for accident, sports – or work-related injuries, replacing total joints, or relieving chronic or acute pain. They give patients more lifestyle choices by offering the latest procedures, to help them stay active. For the convenience of their patients OSNC also offers services such as imaging, urgent care and physical therapy to help patients recover; regain body strength quicker with less locations to visit.


University of California, San Diego
University of California, San Diego
University of California, San Diego
University of California, San Diego
University of Southern California
Field of Study
Orthopedic Surgery

Peer-reviewed Publications

  • Silldorff MD, Choo AD, Choi AJ, Lin E, Carr JA, Lieber RL, Lane JG, Ward SR. Effect of Supraspinatus Tendon Injury on Supraspinatus and lnfraspinatus Muscle Passive Tension and Associated Biochemistry. Journal of Bone and Joint Surgery, 2014.
  • Noren NK, Yang NY, SilldorffMD, Mutyala R, Pasquale EG. Ephrin-Independent Regulation of Cell Substrate Adhesion by the Eph-B4 Receptor. Biomechanical Journal, 2009.
  • Codeluppi S, Svensson CL, Hefferan MP, Valencia F, SilldorffMD, Oshiro M, Marsala M, Pasquale EB. The Rheb-m TOR Pathway is Upregulated in Reactive Astrocytes of the Injured Spinal Cord. Journal of Neuroscience, 2009.

Abstracts and Proceedings

  • SilldorffMD, Wong C, David T, Mitchel D, Collins J, Zucconi M, Cabrera A, Miner A, Robertson CM. Case Report: Lemierre's Syndrome presenting as necrotizing fasciitis in an NFL Athlete, National Football League Physicians Society 2016
  • Silldorff MD, Lane JG, Lee KS, Carr JA, Gastwirt RF, Leiber RL, Ward SR. Passive Mechanical Properties of the Human Supraspinatus and Infraspinatus Muscles. Poster Presentation, Orthopedic Research Society, 2011
  • Silldorff MD, Lane JG, Lieber RL, Ward SR. Passive Mechanical Properties of the Human Supraspinatus and Infraspinatus Muscles. Platform Presentation, International Shoulder Group, 2010

Book Chapters

Silldorff MD and Allen RT. Sacral Insufficiency Fractures, Clinical Decision Support: Spine Surgery: Decision Support in Medicine, 2016.

Past Grant Support

  • NIH Summer Training Grant, 2008
  • Howell Foundation Research Grant, 2005

University Service

  • MED 240- Careers In Medicine, UCSD School of Medicine (Mentor)
  • Lacrosse Mentoring Program, UCSD Men's Lacrosse (Mentor)

Professional Activities & Memberships

  • American Board of Orthopedic Surgery (2018)
    a. Board Eligible
  • American Association of Orthopedic Surgery (2012- present)
    a. Resident Member
  • American Association of Hip and Knee Surgeons (2016- present)
    a. Fellow Member


  • Samuel R Ward, PhD, PT
    Professor and Vice-Chair
    Departments of Orthopedic Surgery,
    Bioengineering, and Radiology
    University of California, San Diego

    9500 Gilman Drive
    Mail Code 0863 La Jolla, CA 92093
    (858) 534-4918
  • Alexandra Schwartz, MD
    Professor of Clinical Orthopedic Surgery
    Residency Program Director
    Department of Orthopedic Surgery
    University of California, San Diego

    UCSD Department of Orthopedic Surgery
    350 Dickinson Street #121
    San Diego, CA 92103-8894
    (619) 543-2539
  • Daniel A Oakes, MD
    Associate Professor of Clinical Orthopedic Surgery
    Arthroplasty Fellowship Program Director
    Residency Program Director
    Department of Orthopedic Surgery
    University of Southern California

    USC Department of Orthopedic Surgery
    HCT 1520 San Pablo Street
    Los Angeles, CA 9003
    (626) 644-2275
  • Oceanside Office

    3905 Waring Road
    Oceanside, CA 92056

  • Carlsbad Office

    6121 Paseo Del Norte
    Carlsbad, CA 92011

  • Physical Therapy - Encinitas

    351 Santa Fe Dr
    Suite 100
    Encinitas, CA 92024

    Monday – Friday : 8:00 am – 5:00 pm

  • Physical Therapy – Vista

    1958 Via Centre Drive
    Vista, CA 92081

  • Physical Therapy – Carlsbad

    6121 Paseo Del Norte
    Carlsbad, CA 92011

  • MRI Facility – Carlsbad

    6121 Paseo Del Norte
    Carlsbad, CA 92011