Ryland Kagan, M.D.

  • Assistant Professor of Orthopaedics and Rehabilitation, School of Medicine

Biography

My roots are deeply imbedded in the Portland community, and it is an honor to have the opportunity to serve a community that has given me so much. As a Portland native, I know the importance of mobility for fellow Oregonians. We are surrounded by remarkable landscapes that pull you into them. Whether you have your sights set on summiting South Sister, or you would like to walk to the grocery store without hip or knee discomfort, my objective is to help you reach your personal health goals.

My role as a surgeon is to empower patients to take ownership of their own care through a guided treatment plan that best fits their values, be that through surgery or non-operative care.  I understand that each of my patients is unique, and with that they bring their own particular aspirations for their health. 

I provide care to patients with hip and knee arthritis; non-operative care, partial knee replacement and total knee and hip replacement surgery. For certain types of knee replacement surgery, I use the CORI Surgical System, an advanced robotic technology. Additionally, I am a specialist in the field of Hip Preservation surgery - treating adolescent and young adults with hip dysplasia or other congenital and acquired disorders of the hip.

In my free time I am an enthusiastic albeit mediocre snowboarder and surfer. I am a proud 2-time greater Portland soccer district, and softball city league champion.  I enjoy spending time with my adventurous wife and our two wild dogs camping, hiking, and biking. 

Education and training

  • Degrees

    • M.D., 2012, Albany Medical College

  • Residency

    • Orthopaedic Surgery, Oregon Health and Science University, 2017

  • Fellowship

    • Adult Joint Reconstruction and Hip Preservation, University of Utah, 2018

  • Certifications

    • American Board of Orthopaedic Surgery: Board Certified

Memberships and associations:

  • American Academy of Orthopaedic Surgeons (AAOS)
  • American Association of Hip and Knee Surgeons (AAHKS)
  • Oregon Association of Orthopaedic Surgeons (OAO)

Publications

Elsevier pure profile

Publications

  • Body Mass Index Is Not Associated With Risk for Mechanical Loosening Following Primary Total Knee Arthroplasty

    Journal of Arthroplasty
    1. Ryland Kagan
    2. Dencel A. García Vélez
    3. Christopher E. Pelt
    4. J. Ryan Martin
    5. Jason M. Jennings
    6. Ayushmita De
    7. Isabella Zaniletti
    8. Vishal Hegde

  • Lower Associated Risk of Revision With All-Polyethylene Tibial Components in Total Knee Arthroplasty

    Journal of Arthroplasty
    1. Ryland Kagan
    2. John Andrawis
    3. Jamil Kendall
    4. Ayushmita De
    5. Kyle Mullen
    6. Adam A. Sassoon

  • Active Amphetamine Abuse in Total Hip Arthroplasty Carries Increased Risk for Postoperative Surgical and Medical Complications

    Arthroplasty Today
    1. Mackenzie Kelly
    2. Thomas Huff
    3. Kathryn Schabel
    4. Jung Yoo
    5. Elizabeth Lieberman
    6. Ryland Kagan

  • Femoral Component Design Is Associated With the Risk of Periprosthetic Femur Fracture After Cementless THA in Patients 65 Years or Older

    Clinical orthopaedics and related research
    1. Mackenzie Kelly
    2. Antonia F. Chen
    3. Sean P. Ryan
    4. Zachary M. Working
    5. Ayushmita De
    6. Kyle Mullen
    7. Kimberly R. Porter
    8. Ryland Kagan

  • Increased Opioid Use in Patients With Ehlers-Danlos Syndrome Before and After Total Hip Arthroplasty

    Arthroplasty Today
    1. Mackenzie Kelly
    2. Ryland P. Kagan
    3. Jung Yoo

  • Leaving the Patella Unresurfaced Does Not Increase the Risk of Short-Term Revision Following Total Knee Arthroplasty

    Journal of Knee Surgery
    1. Dencel A. García Vélez
    2. Anirudh Buddhiraju
    3. Ryland Kagan
    4. Isabella Zaniletti
    5. Ayushmita De
    6. Harpal S. Khanuja
    7. Christopher E. Pelt
    8. Vishal Hegde

  • Selective Use of Modern Cementless Total Knee Arthroplasty is Not Associated with Increased Risk of Revision in Patients Aged 65 or Greater

    Journal of Knee Surgery
    1. Ryland Kagan
    2. Christopher E. Pelt
    3. Harpal S. Khanuja
    4. Julius K. Oni
    5. Isabella Zaniletti
    6. Ayushmita De
    7. Vishal Hegde

  • The Multiplicative Effects of Individual Risk Factors in the Development of Osteonecrosis of the Femoral Head

    Journal of Arthroplasty
    1. Sarah E. Lindsay
    2. Mackenzie Kelly
    3. Spencer J. Smith
    4. Ryland P. Kagan
    5. Duncan C. Ramsey
    6. Jung U. Yoo

  • Cemented Femoral Fixation in Total Hip Arthroplasty Reduces the Risk of Periprosthetic Femur Fracture in Patients 65 Years and Older

    Journal of Arthroplasty
    1. Mackenzie Kelly
    2. Antonia F. Chen
    3. Sean P. Ryan
    4. Zachary M. Working
    5. Kimberly R. Porter
    6. Ayushmita De
    7. Kyle Mullen
    8. Ryland Kagan

  • Fibromyalgia Increases Post-operative Healthcare Utilization Following total Hip Arthroplasty

    Journal of Arthroplasty
    1. Aidan T. Morrell
    2. Mark E. Mildren
    3. Spencer Smith
    4. Jung Yoo
    5. Ryland Kagan

  • Is Timing of Total Hip Arthroplasty and Lumbar Spine Fusion Associated With Risk of Hip Dislocation?

    Arthroplasty Today
    1. Sebastian Welling
    2. Spencer Smith
    3. Jung Yoo
    4. Travis Philipp
    5. Mark Mildren
    6. Ryland Kagan

  • It is the Opioids Not the Spine Surgeon; Dislocation After Total Hip Arthroplasty is Associated With Opioid Use in Patients Who Have Prior Lumbar Spine Fusion

    Journal of Arthroplasty
    1. Ryland Kagan
    2. Sebastian Welling
    3. Mark E. Mildren
    4. Spencer Smith
    5. Travis Philipp
    6. Jung Yoo

  • Risk of Revision and Complications After Total Hip Arthroplasty for Acute Treatment of Acetabular Fracture

    Journal of Arthroplasty
    1. Mackenzie Kelly
    2. Danielle F. Peterson
    3. Jung Yoo
    4. Zachary M. Working
    5. Darin Friess
    6. Ryland Kagan

  • The James A. Rand Young Investigator's Award

    Journal of Arthroplasty
    1. Vishal Hegde
    2. Jamil Kendall
    3. Kathryn Schabel
    4. Christopher E. Pelt
    5. Patrick Yep
    6. Kyle Mullen
    7. Ayushmita De
    8. Ryland Kagan

  • No Reduction in Revision Risk Associated With Highly Cross-linked Polyethylene With or Without Antioxidants Over Conventional Polyetheylene in TKA

    Clinical orthopaedics and related research
    1. Jamil Kendall
    2. Christopher E. Pelt
    3. Benjamin Imlay
    4. Patrick Yep
    5. Kyle Mullen
    6. Ryland Kagan

  • Revision Risk for Total Knee Arthroplasty Polyethylene Designs in Patients 65 Years of Age or Older

    Journal of Bone and Joint Surgery
    1. Jamil Kendall
    2. Christopher E. Pelt
    3. Benjamin Imlay
    4. Patrick Yep
    5. Kyle Mullen
    6. Ryland Kagan

  • Traditional Versus Digital Media–Based Hand Therapy After Distal Radius Fracture

    Journal of Hand Surgery
    1. Taylor R. Lara
    2. Ryland P. Kagan
    3. Shannon L. Hiratzka
    4. Austin R. Thompson
    5. Omar F. Nazir
    6. Adam J. Mirarchi

  • Trends in Polyethylene Design and Manufacturing Characteristics for Total Knee Arthroplasty

    Journal of Arthroplasty
    1. Jamil Kendall
    2. Christopher E. Pelt
    3. Patrick Yep
    4. Kyle Mullen
    5. Ryland Kagan

  • Disagreement in Readmission Rates After Total Hip and Knee Arthroplasty Across Data Sets

    Arthroplasty Today
    1. Stephanie Zhao
    2. Jamil Kendall
    3. Alicia J. Johnson
    4. Alicia A.G. Sampson
    5. Ryland Kagan

  • Does Resident Participation in the Surgical Fixation of Hip Fractures Increase Operative Time or Affect Outcomes?

    Journal of Surgical Education
    1. Ryland Kagan
    2. Christopher Hart
    3. Shannon L. Hiratzka
    4. Adam J. Mirarchi
    5. Amer J. Mirza
    6. Darin M. Friess

  • Radiographic evidence of soft-tissue gas 14 days after total knee arthroplasty is predictive of early prosthetic joint infection

    American Journal of Roentgenology
    1. Ningcheng Li
    2. Ryland Kagan
    3. Christopher J. Hanrahan
    4. Barry G. Hansford

  • Radiographic parameter-driven decision tree reliably predicts aseptic mechanical failure of compressive osseointegration fixation

    Acta Orthopaedica
    1. Ryland Kagan
    2. Lindsay Parlee
    3. Brooke Beckett
    4. James B. Hayden
    5. Kenneth R. Gundle
    6. Yee Cheen Doung

  • Spinal anesthesia in a designated block bay for total joint arthroplasty

    Regional anesthesia and pain medicine
    1. Ryland Kagan
    2. Stephanie Zhao
    3. Andrew Stone
    4. Alicia J. Johnson
    5. Thomas Huff
    6. Kathryn Schabel
    7. Glenn E. Woodworth
    8. Ryan Mj Ivie

  • Ten-Year Survivorship, Patient-Reported Outcomes, and Satisfaction of a Fixed-Bearing Unicompartmental Knee Arthroplasty

    Arthroplasty Today
    1. Ryland Kagan
    2. Mike B. Anderson
    3. Travis Bailey
    4. Aaron A. Hofmann
    5. Christopher E. Pelt

  • Advantages of an Anterior-Based Muscle-Sparing Approach in Transitioning From a Posterior Approach for Total Hip Arthroplasty

    Journal of Arthroplasty
    1. Ryland P. Kagan
    2. Eric M. Greber
    3. Stephen M. Richards
    4. Jill A. Erickson
    5. Mike B. Anderson
    6. Christopher L. Peters

  • Reliability and Validity of the Vancouver Classification in Periprosthetic Fractures Around Cementless Femoral Stems

    Journal of Arthroplasty
    1. Shanjean Lee
    2. Ryland Kagan
    3. Lian Wang
    4. Yee Cheen Doung