Tucson Orthopaedic Research Center

Center Information

Nebojsa Skrepnik, M.D. PhD
Director and Medical Director of Research
Tucson Orthopaedic Research Center
5301 E. Grant Rd.
Tucson, AZ 85712

Currently Enrolling Trials

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Therapeutic Areas

Cardiology/Vascular Diseases
Infections and Infectious Diseases
Internal Medicine
Obstetrics/Gynecology (Women’s Health)
Orthopedics/Orthopedic Surgery
Pulmonary/Respiratory Diseases
Trauma (Emergency, Injury, Surgery)


The Tucson Orthopaedic Research Foundation was created in 1995 so that the physicians could participate in clinical research, develop projects and assess outcomes. Research has been undertaken in clinical studies related to orthopaedics including pain management, blood problems, soft tissue injuries, and postoperative care. In 2001 the Foundation’s mission was expanded and renamed the Tucson Orthopaedic Research Center.

The new Tucson Orthopaedic Research Center (TORC) is a multi-specialty investigative research facility dedicated to conducting clinical research trials efficiently and at the highest level of quality.

Tucson Orthopaedic Research Center is a division of the Tucson Orthopaedic Institute (TucsonOrtho), which includes 47 practicing orthopaedic providers. Tucson Orthopaedic Institute operates three Tucson clinics: East office, Northwest office, and Oro Valley office.

Orthopaedic Clinical trials are completed in 2 hospitals and three clinics: Tucson Medical Center, Northwest Medical Center, and at the three Tucson Orthopaedic Institute clinics. The center also cooperates with research services of investigators who are board certified in Rheumatology, Cardiology, Pulmonary, Internal Medicine, Radiology, Neurology, Gynecology, Gastroenterology, among others.


Since 2002, TORC conducted over 45 Osteo–Arthritis (OA) studies and in all of them met enrollment goals (in some studies doubled and tripled goals). TORC was top enroller in the country in over 20 OA studies. Dr Skrepnik is a consultant for major pharma and device companies and was main PI for US in multiple OA studies, developing new protocols and helping with data analysis. Clinical trial experience and therapeutic interest include:

  • Orthopaedic devices
  • Acute and chronic pain (post-surgical)
  • Acute and chronic back, neck and shoulder pain
  • Osteoarthritis
  • Rheumatoid arthritis
  • Bursitis
  • Epicondylitis
  • Fibromyalgia
  • Osteoporosis
  • Tendonitis
  • Carpal tunnel syndrome
  • Trauma
  • Hip and knee disorders
  • Soft tissue injuries
  • Erythropoiesis stimulants
  • DVT prevention
  • Anti-inflammatory medications
  • (COX-2 and other NSAID’s)
  • Internal Medicine
  • Cardiology
  • Pulmonary
  • Allergy
  • Gastroenterology
  • Infectious Disease
  • Immunology
  • Neurology
  • Gynecology
  • Radiology
  • Orthopaedic Pediatrics

TORC has worked with many Pharmaceutical, Device and Biotechnology Companies, and CRO’s including:

  • AAI Pharma
  • Algos Pharmaceuticals
  • Alza
  • Amgen
  • Arthrex
  • AstraZeneca
  • Bayer
  • Boehringer
  • Bristol-Myers Squibb
  • Careers in Research
  • ClinTrials Research. Inc
  • Covance
  • DePuy AcroMed (Johnson& Johnson)
  • Elan
  • ESKA
  • Endo
  • Forest Laboratories. Inc
  • ICON Clinical
  • Ingenix
  • Johns Hopkins
  • Karl Storz
  • Kendle International
  • Neurobiological Technologies.Inc
  • Novartis
  • De Puy (J&J) orthopaedics
  • Smith&Nephew
  • Medtronic
  • Takeda
  • DJO
  • Omni
  • Averion
  • Biomet
  • Biomimetic
  • Auxulium
  • Merck
  • King Pharmaceutical
  • Johnson&Johnson
  • INC Research
  • Genzyme
  • Ferring Pharmaceutical
  • Organon
  • Ortho Biotech
  • Ortho McNeil
  • Orthologic
  • Parexel
  • Parke-Davis
  • Pfizer
  • Pharmaceutical Resource Corporation
  • Pharmacia
  • PPD
  • PRA International
  • Purdue Pharma
  • Research Services. Inc
  • RS Medical
  • Sanofi-Synthelabo
  • Scirex
  • Searle
  • SmithKline Beecham
  • Stryker Howmedica
  • Syntex
  • TAP Pharmaceutical
  • VQ Orthocare
  • Zimmer
  • ZymoGenetics
  • Wyeth
  • VertiFlex
  • Stryker
  • Sanofi-Aventis
  • Synthes
  • Regeneron
  • Research Point
  • Quintilies
  • ProChon
  • Omeros
  • Eli Lilly
  • Kyphon
  • Cerimon
  • CATO Research
  • ProMetrika
  • And others


Tucson Orthopaedic Institute is one of the largest full-service orthopaedic practices in the Southwest, with 3 three locations serving East Tucson, Northwest Tucson and Oro Valley. The East facility is housed in the first floor of the 200,000+ sq. ft. TMC Orthopaedic and Surgical Tower. It accommodates our 22 orthopaedic physicians, and includes casting and x-ray rooms, over 70 exam rooms, a pain management suite, spacious waiting areas, and ten operating rooms on the third floor. There is a podiatrist, occupational medicine specialist, physiatrist and 15 mid-level providers employed by TucsonOrtho.

TucsonOrtho’s Northwest facility is housed in 17,500 sq.ft., with 8 orthopaedic surgeons on staff, 2 non-surgical physicians, 35 exam rooms, four cast rooms, and a conference room. The TucsonOrtho Oro Valley location has 6 orthopaedic surgeons on staff to assist patients with their needs.In addition to TucsonOrtho’s world class orthopaedic specialty physicians, the practice also features 2 physical therapy centers with state-of-the-art equipment and highly trained therapists linked to the orthopaedic offices to provide coordinated rehabilitation and personalized treatment plans.

The Research Headquarters (TORC) is located on the second floor. Within our facility there are 3 patient rooms, conference room, work area for CRA’s and monitors, secure record and medication storage, a freezer (-20° F), a dedicated refrigerator, fax, copier, numerous telephone lines, Internet access, a state-of-the-art computer system, centrifuge, and phlebotomy.


  • Jay A.Katz, M.D.
    Medical Director

  • Jelena Candito, CCRC
  • Yvonne Ruiz, CCRC

  • Eric P Anctil, MD
  • Jeffrey M. Baron, M.D.
  • Kevin W. Bowers, M.D.
  • Caryl S. Brailsford-Gorman, M.D.
  • A. Mark Braunstein, M.D.
  • Russell G. Cohen, M.D.
  • Stephen L. Curtin, M.D.
  • Walter Calvin Damper, D.O.
  • Scott. L. Evans, D.P.M.
  • Joel R. Goode, M.D.
  • Scott D. Goorman, M.D.
  • Stephen E. Hanks, M.D.
  • Lawrence R. Housman, M.D.
  • Gerard K. Jeong, M.D.
  • Geoffrey S. Landis, D.O

  • Joleen Cox, NP-C
  • Amy Irwin, NP
  • Lauren King, PA-C
  • Kimberly Merrill-McNurlin, PA-C
  • Marni Miller, PA-C
  • Philip Olona, PA-C
  • Jason Randall, PA-C
    • Nebojsa V. Skrepnik, M.D., PhD
      Director and Medical Director of Research

    • Crystal Placencia, CRC

    • Andrew P. Mahoney, M.D.
    • John A. Maltry, M.D.
    • Eugene Y. Mar, M.D.
    • Brian B. Nielsen, M.D.
    • Michael A. Parseghian, M.D.
    • Edward P. Petrow Jr, D.O.
    • Luis A. Piedrahita, M.D.
    • William D. Prickett, M.D.
    • William J. Quinlan, M.D.
    • Murray F. Robertson, M.D.
    • Steven A. Shapiro, M.D.
    • Scott V. Slagis, M.D.
    • Todd J. Tucker, M.D.
    • Jesse J Wild, III, M.D.
    • John J. Wild. Jr., M.D.
    • Steven C. Zeiller, M.D.

    • Sonrisa Raths, PA-C
    • Nicole Stoker, PA-C
    • Richard Street, PA-C
    • Betty Thomas, FNP
    • Daniel Trimble, PA-C
    • Brent E. Walker, PA- C
    • Betsy Zeh, PA-C
    • Laura Zimmerman, FNP-C


    Metropolitan Tucson is home to more than 1,000,000 permanent residents. During the winter months, the estimated population increases to more than 1,200,000 because of the deep, southwest pocket location and superb climate. TORC is conveniently located inside TOI, adjacent to TMC, and is a less than a half hour’s drive from Tucson International airport. Tucson is a highly diverse community with an extensive population of seniors, college students, and minority groups. Our comprehensive in-house patient database is continually expanding with more than 30,000 active charts.

    Demographic Breakdown:

    Female: 51%    Male: 48.9%

    White: 68.8%
    Hispanic Origin: 39.5%
    Black: 4.4%
    Asian: 2.7%
    American Indian: 2.8%
    Other: 17.8%
    Age as % of population
    Median age: 32.8 Years
    0-4: 7.6%
    5-17: 17.4%
    18-24: 11.8%
    25-44: 31.8%
    45-64: 17.7%
    65yrs+: 13.7%


    If you are a sponsor and want to contact Dr. Skrepnik, please email him at nskrepnik@tucsonortho.com

    Contact Center

    If you are interested in contacting this center to discuss clinical trials, please complete and send the email form below. A representative from the research center will then follow up with you.