Our Research Team

Our research team is made up of faculty research leaders, research scientists, and support staff.

Faculty Research Leaders

Jonathan P. Braman, MD, MHA
Research Site Leader, University of Minnesota Medical Center
Professor, Department of Orthopedic Surgery


Peter Cole, MD
Research Site Leader, Regions Hospital
Professor, Department of Orthopedic Surgery


Bradley Nelson, MD
Research Site Leader, TRIA Orthopedic Center
Associate Professor, Department of Orthopedic Surgery


Marc Swiontkowski, MD
Research Committee Chair
Professor, Department of Orthopedic Surgery

Research Scientists

Elizabeth Bradley, PhD
Research Scientist
Assistant Professor, Department of Orthopedic Surgery

Liz Boyer, PhD
Clinical Scientist, Gait and Motion Analysis Research
Adjunct Assistant Professor, Department of Orthopedic Surgery

Cathy Carlson, DVM, PhD, DACVP
Research Scientist
Adjunct Assistant Professor, Department of Orthopedic Surgery

Paula Ludewig, PhD, DPT
Research Scientist
Adjunct Assistant Professor, Department of Orthopedic Surgery

Michael Schwartz, PhD
Clinical Scientist, Gait and Motion Analysis Research
Professor, Department of Orthopedic Surgery

UMMC Research Staff

Paula Rupp, MPH, ACRP-CP
Research Manager

As the department’s Research Manager, Paula partners with investigators and research staff to ensure the successful conduct of research activities in the department, including study design and planning, funding, regulatory, subject recruitment, data collection and analysis, closeout, and manuscript publication for all research studies. Paula has expertise in both the industry and hospital sides of clinical research. Prior to joining the department, she was a Project Manager for patient recruitment at WCG ThreeWire, and previously worked as the Research Manager in the Critical Care Research Center at Regions Hospital. Paula has an MPH in Epidemiology from the University of Michigan.

Tanya Doble
Grants & Contracts Professional

Tanya has expertise in planning and preparing grants as the department’s Grants & Contracts Professional. Tanya helps plan and prepare grants, navigate the pre-award process, and helps with formatting and navigating biosketches and other support pages.  She assists with manuscript submission processes. Tanya manages the department’s Musculoskeletal Research Training Program. Prior to joining the department, Tanya worked in the Division of Endocrinology and Diabetes for over 10 years helping with managing the T32 training grant for their fellowship program as well as other grant submissions. Prior to joining the Endocrinology Division, Tanya worked in the Diabetes Education Program, and helped with getting the program ADA Certified. Tanya worked as a Nursing Assistant in the Diabetes Clinic and the Pediatric Bone Marrow Transplant Unit at the University of Minnesota.

Jason Haselhuhn, DO
Research Specialist

Jason Haselhuhn, DO, is a Research Specialist who supports Professor and Spine Section Leader David W. Polly Jr., MD. In this position, Jason assists with the development of new research projects, performs data collection, and prepares studies for publication and/or presentation. Jason recently completed a preliminary residency year of training in general surgery at the University of North Dakota and attended Des Moines University for medical School.

Paul Lender
Data Analyst

Paul assists the research team by developing and maintaining databases, extracting data for reports, creating graphical display of data, and more.

Ifeoluwa (Ife) Onuoha
Research Coordinator
Ife is a Research Coordinator who acts as the lead coordinator on several prospective studies, including coordinating research study details, subject enrollments, documentation, and patient retention. Ife obtained a Masters in Biomedical Sciences with concentrations in Stem Cell Biology and Neuroscience from Rutgers University. Ife also has prior experience as an Adjunct Professor in Biology at the Sussex Community College in Sussex, NJ, and as a Clinical Research Intern at the Princeton Medical Institute in Princeton, NJ.

Paul Soriano, MD
Research Specialist
Paul is a Research Specialist who supports Professor and Spine Section Leader David W. Polly Jr., MD. In this position, Paul manages broad aspects of clinical research, including drafting study protocols, collecting data through chart reviews or in the OR, and writing abstracts and manuscripts. He is also responsible for coordinating aspects of clinical research, working with study sponsors, study participants, and the IRB. Paul attended medical school at the Ateneo School of Medicine and Public Health in the Philippines.

TRIA Orthopedic Center Research Staff

TRIA Institute is part of TRIA Orthopedics. The TRIA Institute team oversees research, patient-reported outcomes, and education.

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Regions Hospital Research Staff

As a Level 1 Adult and Pediatric Trauma Center, the orthopedic surgery care team at Regions Hospital brings forth a strong background in research and education to orthopedic surgery.

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