Research Presentations

This page lists research presentations given by OHSU faculty, fellows, residents and medical students at orthopaedic meetings and conferences. The research is grouped by the event at which it was presented.

2022 Annual Meeting of the American Association of Hip and Knee Surgeons (AAHKS 2022)

2022 Orthopaedic Trauma Association Annual Meeting (OTA 2022)

2022 AAHKS ANNUAL MEETING

The Annual Meeting of the American Association of Hip and Knee Surgeons covers a wide range of scientific topics including implant design, outcomes, surgical techniques and complications of primary and revision total joint arthroplasty for hip and knee surgeons. The following are papers and posters presented by OHSU orthopaedic faculty and residents.

Friday, 11/4/22: Paper #3 (Podium)

A Reimbursement Retrospective.
Presented by Erik Woelber, MD, PI: Kathryn Schabel, MD.

Saturday, 11/5/22: Paper #23 (Podium)

No Difference in Risk of Dislocation with Lumbar Spine Fusion Prior to or After Total Hip Arthroplasty.
Presented by Sebastian Welling, MD, PI: Ryland Kagan, MD

Saturday, 11/5/22: Paper #24 (Podium)

Blame the Opioid not the Spine Surgeon; Dislocation After Total Hip Arthroplasty with Prior Lumbar Surgery.
Presented by Ryland Kagan, MD, PI: Jung Yoo, MD

Saturday, 11/5/22: Paper #33 (Podium)

Fibromyalgia Increases Post-Operative Healthcare Utilization Following Total Hip Arthroplasty.
Presented by Mark E. Mildren, MD, PI Ryland Kagan, MD

James A. Rand Young Investigators Award

Increased Revision Risk with Rotating Platform Bearings in Total Knee Arthroplasty.
Presented to: Vishal Hegde, MD, PI Ryland, Kagan, MD

Posters

poster describing the increased post-op periprosthetic femur fracture risk
poster describing risk of revision and complications after total hip arthroplasty
Poster describing increased mortality and complications for underweight patients after total hip arthroplasty
poster describing cemented femoral fixation for total hip arthroplasty reduces the risk of periprosthetic femur fracture in patients 65 and older
Award poster
Poster describing femoral component design influences risk of periprosthetic femur fracture after total hip arthroplasty
Poster describing lower revision risk with all-polyethylene tibial components in total knee arthroplasty

Orthopaedic Trauma Association Annual Meeting 2022

photo collage from OTA video

The Orthopaedic Trauma Association’s 38th Annual Meeting took place on October 12 - 15, 2022. Listed below are research papers presented with OHSU faculty, resident and medical student co-authors.

Watch our short video summarizing OHSU’s participation at OTA 2022.

Paper - Oct 12, 2022 Paper Session III: Fracture Healing & Clinical Models

Collagen X Biomarker Correlates to Canonical Bone Turnover Markers During Fracture Healing and Distinguishes Sex-Related Differences in Soft Callus Formation

Zachary Mark Working MD; Kelsey O'Hara BS; Anna Laura Nelson MS; Ryan Coghlan BS; Lucas Scott Marchand MD; Sofia Bzovsky MSc; Sheila Sprague PhD; Nathan N O'Hara PhD; Gerard Slobogean MD; Chelsea S Bahney PhD

Paper - Oct 12, 2022 Paper Session III: Fracture Healing & Clinical Models

Collagen X Longitudinal Fracture Biomarker Suggests Staged Fixation in Tibial Plateau Fractures Delays Rate of Endochondral Repair

Zachary Mark Working MD; Danielle Peterson MD; Michelle Lawson MD; Kelsey O'Hara BS; Ryan Coghlan MS; Matthew T Provencher MD; Darin M Friess MD; Brian Johnstone PhD; Theodore Miclau MD; Chelsea S Bahney PhD

Paper - Oct 13, 2022 Annual Meeting - Paper Session I

Increased Risk of Postoperative Periprosthetic Femur Fracture With Uncemented Versus Cemented Hemiarthroplasty: A Nationwide Database Study of 24,468 Femoral Neck Fractures

Frank Rodgers MD; Qian Yang MPH; Darin M Friess MD; Zachary Mark Working MD; Jung U Yoo MD; Ryland Phillip Kagan MD

Paper - Oct 13, 2022 Annual Meeting - Paper Session I

Risk Factors for Instability after Hip Arthroplasty for Femoral Neck Fracture

Jeffrey Frandsen MD; Graham John Dekeyser MD; Brenna Blackburn PhD; The Arthroplasty for Hip Fracture Consortium; Jeremy Gililland MD
University of Utah, Salt Lake City, UT, United States

Paper - Oct 13, 2022 Annual Meeting - Paper Session I

Nail-Plate Fixation for Distal Femur Fractures: A Multicenter Case Series

Brendan Shi MD; Benjamin Kelley MD; Dane Jensen Brodke MD; Alexander Upfill-Brown MD; Sai Devana MD; Nathan N O'Hara PhD; Cynthia Burke BS; Jayesh Gupta BS; Natasha McKibben BS; Robert V O'Toole MD; John Morellato MBBS; William Hunter Gillon MD; Murphy McGriff Walters MD; Colby Barber MD; Paul William Perdue MD; Graham John Dekeyser MD; Lillia Steffenson MD; Lucas Scott Marchand MD; Marshall James Fairres MD; Stephen J Shymon MD; Loren O Black MD; Zachary Mark Working MD; Trevor Gulbrandsen MD; Matthew Hogue MD; Omar Hammad Atassi MD; Thomas W. Mitchell MD; Erika Roddy MD; Ashraf N El Naga MD; Christopher Lee MD

Paper - Oct 13, 2022 Annual Meeting - Paper Session I

Risk Factors for Reoperation to Promote Union in 1128 Distal Femur Fractures

Dane Jensen Brodke MD; Sai Devana MD; Adolfo Hernandez MS; Nathan N O'Hara PhD; Cynthia Burke BS; Jayesh Gupta BS; Natasha McKibben BS; Robert V O'Toole MD; John Morellato MBBS; Murphy McGriff Walters MD; William Hunter Gillon MD; Colby Barber MD; Paul William Perdue MD; Graham John Dekeyser MD; Lillia Steffenson MD; Lucas Scott Marchand MD; Stephen J Shymon MD; Marshall James Fairres MD; Loren O Black MD; Zachary Mark Working MD; Matthew Hogue MD; Trevor Gulbrandsen MD; Omar Hammad Atassi MD; Thomas W. Mitchell MD; Erika Roddy MD; Ashraf N El Naga MD; Christopher Lee MD

Paper - Oct 13, 2022 Annual Meeting - Paper Session I

Malreduction Is the Most Important Technical Factor Contributing to Nonunion in Supracondylar Distal Femur Fractures Treated With Lateral Locked Plating

David John Stockton MD; Nathan N O'Hara PhD; Dane Jensen Brodke MD; Natasha McKibben BS; Kathleen Marie Healey BA; Abraham Michael Goch MD; Haley Demyanovich MS; Lucas Scott Marchand MD; Stephen J Shymon MD; Paul William Perdue MD; Omar Hammad Atassi MD; Zachary Mark Working MD; Ashraf N El Naga MD; Matthew Hogue MD; John Morellato MBBS; Eric Hempen MD; Gerard Slobogean MD; Christopher Lee MD; Robert V O'Toole MD

Paper - Oct 13, 2022 Paper Session V: Post-Traumatic OA

High-Energy Pilon Fractures Result in Significant Chondrocyte Cell Death on Both the Tibia and Talar Side of Injury

Justin Haller MD; Graham John Dekeyser MD

Paper - Oct 14, 2022 Annual Meeting - Paper Session IV

Single-Incision Fasciotomy Decreases Infection Risk Compared to Dual-Incision Fasciotomy in Treatment of Tibial Plateau Fractures With Acute Compartment Syndrome

Graham John Dekeyser MD; Eli w. Bunzel MD; Dillon Christopher O'Neill MD; Sean E Nork MD; Justin Haller MD; David Barei MD

Paper - Oct 14, 2022 Annual Meeting - Paper Session V

Is Iliosacral Screw Removal Useless? A Causal Analysis of Prospective Observational Data

Natasha McKibben BS; Nicolas H Zingas BS; Kathleen Marie Healey BA; Caroline Ann Benzel BS; David John Stockton MD; Haley Demyanovich MS; Gerard Slobogean MD; Robert V O'Toole MD; Marcus F Sciadini MD; Nathan N O'Hara PhD

Paper - Oct 14, 2022 Annual Meeting - Paper Session V

Risk of Revision and Complications: An Analysis of 956 Total Hip Arthroplasty Procedures for Acute Treatment of Acetabular Fractures

Danielle Peterson MD; Mackenzie Kelly MD; Darin M Friess MD; Jung U Yoo MD; Zachary Mark Working MD; Ryland Phillip Kagan MD

Paper - Oct 15, 2022 Annual Meeting - Paper Session VIII

The LIMB-Q: A Novel Patient-Reported Outcomes Instrument Specific to Lower-Extremity Trauma Patients

Lily Mundy MD; Anne Klaasen PhD; ANDREA PUSIC MD; Tim De Jong; Nicole Lindenblatt MD; Nina Vestergaard Simonsen MD; Lotte Poulsen MD; Ariana Paniagua BA; Natasha McKibben BS; Nicolas H Zingas BS; Kathleen Marie Healey BA; Raymond A Pensy MD; Scott Hollenbeck MD; Mark Gage MD

Poster – Annual Meeting #124

Does the Matta Acetabular Fracture Nomogram Have External Validity?: Evaluation Over 10 Years at an Academic Level 1 Trauma Center Acetabular Service with 2 Years of Follow Up

Catherine Hutchison MD, Natalie Lacey Zusman MD, Natasha McKibben, Karalynn Lancaster, Qian Yang MPH, Darin Friess MD MPH, Zachary M Working MD