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Stephen Kayiaros, MD


Stephen Kayiaros

Joint Replacement
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About Stephen Kayiaros

Dr. Kayiaros is board certified in orthopaedic surgery. He obtained his medical degree from the University of Medicine and Dentistry of NJ-Robert Wood Johnson Medical School and his undergraduate degree from Johns Hopkins University. He completed his internship and residency in Orthopaedic Surgery as well as a fellowship in Orthopaedic Trauma at The Warren Alpert School of Medicine at Brown University followed by a fellowship in Adult Reconstruction and Joint Replacement at the Hospital for Special Surgery in New York.

Dr. Kayiaros is the Director of Total Joint Replacement Surgery at the University Center for Ambulatory Surgery (UCAS) as well as the Medical Director for the Joint Center at Robert Wood Johnson University Hospital Somerset. He is also section Chief of the Division of Orthopedics at Robert Wood Johnson University Hospital Somerset. 

Dr. Kayiaros performs over 600 joint replacement surgeries per year, making him one of the busiest joint replacement surgeons in New Jersey. Dr. Kayiaros was an early adopter of the Anterior Approach for Total Hip Replacement and is considered a pioneer of the procedure. He has written several articles as well as contributed book chapters on the surgical technique. Dr. Kayiaros is able to offer the anterior approach to all his patients, even performing the surgery on the most complex of cases. 

Additionally, Dr. Kayiaros is an experienced revision surgeon and receives referrals for complex failed joint replacements. With the myriad of techniques that he has learned in his career, Dr. Kayiaros is able to rejuvenate these old joint replacements and restore function to his patients. 


  • Subspecialty in Adult Reconstruction and Joint Replacement and Orthopaedic Trauma
  • 2015 Volunteer Faculty Award recipient, Robert Wood Johnson Medical School
  • Member of American Academy of Orthopaedic Surgeons
  • Member of American Association of Hip and Knee Surgeons
  • Nearly two dozen professional presentations on orthopaedic surgery topics
  • Clinical Assistant Professor, Department of Orthopaedic Surgery, Rutgers Robert Wood Johnson Medical School
  • Senior Clinical Associate and Clinical Instructor, Dept. of Orthopaedic Surgery, Weill Cornell Medical College, Cornell University, Hospital for Special Surgery and Dept. of Orthopaedic Surgery, The Warren Alpert School of Medicine, Brown University
  • Resident of the Year, Dept. of Orthopaedics, Warren Alpert School of Medicine, Brown University
  • Elected to Alpha Omega Alpha National Medical Honor Society
  • Excellence in Pathology, Robert Wood Johnson Medical School
  • Honors Graduate, Johns Hopkins University
  • Fluent in Greek, working knowledge of French
  • Named to Select Surgeons Bone & Joint list
  • Voted NJ Monthly Jersey Choice Top Doctor

Clinical Interests:

  • Outpatient Same Day Hip and Knee Replacement
  • Minimally Invasive Anterior Approach Total Hip Replacement
  • Complex Revision Hip and Knee Replacement
  • Post-Traumatic Joint Replacement
  • Partial Knee Replacement
  • Periprosthetic Fractures
  • Minimally Invasive Total Knee Replacement
  • Handheld Computer Navigated Knee Replacement

Additional Information:

Assistant: Saaby Ross

Phone: 732-537-0909, ext. 1106


Hospital Affiliations:

Accepting New Patients:



Partial Knee Replacement Out-Patient (Same Day) Joint Replacement Surgery

Complex Total Knee Replacement

Complex Total Hip Replacement

Minimally Invasive Total Knee Replacement Minimally Invasive Anterior Approach Hip Replacement

Revision Total Knee Replacement

Revision Total Hip Replacement


Failed Knee Replacements

Osteoarthritis of the Hip

Failed Hip Replacements

Traumatic Arthritis Arthritis Osteoarthritis of the Knee Rheumatoid Arthritis


Preston J.S., Caccavale, D., Smith A., Stull L.E., Harwood D.A., Kayiaros S. Bundled Payments for Care Improvement in the Private Sector: A Win for Everyone. Journal of Arthroplasty. 2018 Mar 14. [Epub ahead of print]

Honcharuk E., Kayiaros S., Rubin L.E. The Direct Anterior Approach for Acetabular Augmentation in Primary Total Hip Arthroplasty. Arthroplasty Today. 2017 May 12;4(1):33-39.

Bateman D.K., Dow R.W., Brzezinski A., Bar-Eli H.Y., Kayiaros S. Correlation of the Caprini Score and Venous Thromboembolism Incidence Following Primary Total Joint Arthroplasty-Results of a Single-Institution Protocol. Journal of Arthroplasty. 2017 Dec;32(12):3735-3741.

Koch C.N., Mateo L.S., Kayiaros S., Cassidy K.A., Jerabek S.A., Gonzalez Della Valle A. Spontaneous Fractures of a Modern Modular Uncemented Femoral Stem. HSS Journal. 2016 Oct;12(3):250-254.

Parcells B.W., Giacobbe D., Macknet D., Smith A., Schottenfeld M., Harwood D.A., Kayiaros S. Total Joint Arthroplasty in a Stand-alone Ambulatory Surgical Center: Short-term Outcomes. Orthopedics. 2016 Jul 1;39(4):223-8.

Kayiaros, S., MD, & Tripathi, M. S., MD. (2016). Chapter 15: Avoiding, Recognizing, and Treating Complications of the Direct Anterior Hip Approach. In The Direct Anterior Approach to Hip Reconstruction.

Bertrand W., Parcells, MD, David M. Macknet, BA, Stephen T. Kayiaros, MD. The Direct Anterior Approach for 1-Stage Bilateral Total Hip Arthroplasty. The Journal of Arthroplasty. February 01, 2016 31 | 2 | Pages 434-437; DOI: 10.1016/j.arth.2015.08.040

Kayiaros S., Harwood D. The Challenges of Managing Post-Surgical Outcomes in ASCs. Surgical Products. November 10, 2015.

Kayiaros S., Parcells B., Macknet D. The Direct Anterior Approach for One-Stage Bilateral Total Hip Arthroplasty: Early Outcomes Analysis of a Single Surgeon Case Series. The Journal of Arthroplasty. Sept 8, 2015.

Kayiaros S., Rubin L.E., Biercevicz A., Limbird R.S., Paller D. Broach Handle Offset and Impact Acceleration During Femoral Preparation for Total Hip Arthroplasty. Reconstructive Review. Sept 3(2): 41-3, 2013.

Aaron, D., Patel, A., Kayiaros, S., Calfee, R. Four Common Types of Bursitis: Diagnosis and Management. Journal of the American Academy of Orthopaedic Surgeons. 19(6): 359-67, 2011.

Kayiaros, S., Blankenhorn, B.D., DeHaven, J., Van Lancker, H.P., Sardella, P., Pascalides, J.T., DiGiovanni, C.W. Correction of Metatarsus Primus Varus Associated with Hallux Valgus Deformity Using the Arthrex Mini TightRope®: A Report of 44 Cases. Foot and Ankle Specialist. 4(4): 212-17, 2011

Thakur, N.A., Plante, M.J., Kayiaros, S., Reinert, S.E., Ehrlich, M.G. Inappropriate Transfer of Patients With Orthopaedic Injuries to a Level 1 Trauma Center: A Prospective Study. J Orthop Trauma. 24(6): 336-9, 2010.

Gusev, Y., Kayiaros, S., Dooley, W.Amplification of Centrosomes—An Early Event in Breast Cancer Progression? Clinical Immunology Newsletter. 19(1): 18, 1999.

Vopat, B.G., Ritterman, S.A., Kayiaros, S., Rubin, L.E. Primary Knee Arthrodesis for Severe Crystalline Arthropathy. Am J Orthop (Belle Mead NJ). Oct;42(10): E91-3, 2013.


Medical Degree, University of Medicine and Dentistry of NJ-Robert Wood Johnson Medical School, New Brunswick


Orthopaedic Surgery, The Warren Alpert School of Medicine at Brown University, Providence


The Warren Alpert School of Medicine at Brown University, Orthopaedic Trauma, Providence

Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, New York City