DeNovo NT Natural Tissue Graft Stratified Knee Study

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01670617
Recruitment Status : Active, not recruiting
First Posted : August 22, 2012
Last Update Posted : January 26, 2017
Information provided by (Responsible Party):
Zimmer Orthobiologics, Inc.

Brief Summary:
The purpose of this study is to evaluate the long-term relief of pain and return to function for patients receiving DeNovo NT for cartilage lesions in the knee. DeNovo NT is a marketed product and has been used in more than 7,500 patients over the last 7 years.

Condition or disease Intervention/treatment Phase
Defect of Articular Cartilage Knee Injuries Other: Particulated Juvenile Articular Cartilage Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 90 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Stratified, Post-Market Study of DeNovo NT for the Treatment of Femoral and Patellar Articular Cartilage Lesions of the Knee
Study Start Date : March 2012
Estimated Primary Completion Date : December 2018
Estimated Study Completion Date : December 2021

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
DeNovo NT Graft
DeNovo NT Graft stratified by lesion location - femur or patella
Other: Particulated Juvenile Articular Cartilage
Treatment of articular cartilage defects up to 7.5 cm2
Other Name: DeNovo NT Natural Tissue Graft

Primary Outcome Measures :
  1. Improvement in KOOS scores [ Time Frame: Between baseline and 24 months post surgery ]
    Improvement in Knee Injury and Osteoarthritis Outcomes Survey (KOOS) scores

Secondary Outcome Measures :
  1. X-ray Evaluation [ Time Frame: Preop, 12 months and 24 months post surgery ]
    X-ray evaluation of joint narrowing, and osteophyte and cyst formation

  2. Incidence and time to reoperation/revision [ Time Frame: 5 years ]
  3. Mean IKDC Knee Examination grades [ Time Frame: Annually to 5 years post surgery ]
  4. MRI Evaluation [ Time Frame: Preop, 12 Months and 24 Months post surgery ]
    Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score

  5. Incidence of adverse events [ Time Frame: Annually to 5 years post surgery ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


  1. Voluntary signature of the IRB approved Informed Consent,
  2. Male or female subjects between the ages of 18 to 55 years,
  3. If female: Actively practicing a contraception method and willing to continue for a minimum of 1 year postoperatively, practicing abstinence and willing to continue for a minimum of 1 year postoperatively, or sterile
  4. One or two contained lesion(s) of the femur or patella ≥ ICRS Grade 3 or OCD lesions with healed bone base with no loss of bone greater than 6mm
  5. Has peripheral cartilage debridement to healthy cartilage that results in at least one lesion with an area of ≥ 2 cm2 and ≤ 7.5 cm2,
  6. Lesion(s) to be treated must be contained/shouldered > 70% of the periphery,
  7. Ligaments in the affected knee are stable,
  8. Ipsilateral knee compartment has intact menisci
  9. The contralateral knee is asymptomatic, stable, and fully functional,
  10. Is refractory to conservative non-surgical management or minimal surgical intervention and ≥ 3 months from the start of either treatment,
  11. Must record a response, at the preoperative study visit, of moderate to extreme pain for any one of the KOOS Pain Scale questions, P2 through P9.
  12. Must be physically and mentally willing and able, in the Investigator's opinion at the time of enrollment, to be compliant with the protocol


  1. Clinical disease diagnosis of the indexed affected joint that includes

    • Osteoarthritis or avascular necrosis,
    • Rheumatoid arthritis, or history of septic or reactive arthritis,
    • Gout or a history of gout or pseudogout in the affected knee,
    • Bipolar articular cartilage involvement (or kissing lesions)
    • Has more than two clinically relevant chondral lesion(s) on the index knee,
    • Osteochondritis dissecans of the knee with significant bone loss
    • Associated damage to the underlying subchondral bone requiring bone graft,
    • Has well-defined subchondral cyst(s),
    • Has current or impending subchondral avascular necrosis,
  2. History of secondary arthropathies (i.e., sickle cell disease, hemochromatosis, or autoimmune disease),
  3. Uncontrolled diabetes,
  4. Displays a high surgical risk due to unstable cardiac and/or pulmonary disease,
  5. Has HIV or other immunodeficient state
  6. Is at substantial risk for the need of organ transplantation
  7. Is pregnant or breast-feeding,
  8. Body Mass Index >35 (BMI=kg/m2),
  9. Is participating concurrently in another clinical trial
  10. Is receiving prescription pain medication other than NSAIDs or acetaminophen for conditions unrelated to the index knee condition, chronic use of anticoagulants, or taking corticosteroids,
  11. Has a neuromuscular, neurosensory, or musculoskeletal deficiency that limits the ability to perform objective functional assessment of either knee,
  12. Active joint infection or history of chronic joint infection at the surgical site,
  13. Prior total meniscectomy of either knee,
  14. Has severe patellofemoral malalignment/maltracking or patellar instability
  15. Radiographically has >5 degrees of malalignment
  16. Has received, within the past 3 months HA or cortisone injections in knee,
  17. Has undergone prior tendon repair, meniscus repair, ligament repair or distal realignment/osteotomy surgery in the index knee, < 6 months prior to surgery,
  18. Failed marrow stimulation or ACI treatment performed < 12-mo before baseline,
  19. Index knee has been surgically treated for cartilage repair with OATs, mosaicplasty or osteochondral allograft,
  20. Involves concomitant procedures in the affected knee with the exception of incidental loose body removal, debridement, synovectomy, retinacular release, and/or partial meniscectomy
  21. Has contraindications for Magnetic Resonance Imaging (MRI),
  22. Has an allergy to Polymyxin B sulfate or Bacitracin antibiotics,
  23. Is receiving workman's compensation or currently involved in litigation relating to the index knee

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01670617

United States, California
Kerlan Jobe Orthopaedics
Los Angeles, California, United States, 90045
Naval Medical Center San Deigo
San Deigo, California, United States, 92134
United States, Colorado
Colorado Orthopedic Consultants
Aurora, Colorado, United States, 80012
United States, Florida
Andrews Institute for Orthopaedics & Sports Medicine
Gulf Breeze, Florida, United States, 32561
United States, Georgia
Emory Spine & Sports Medicine Center
Atlanta, Georgia, United States, 30329
United States, Louisiana
Tulane University Medical Center
New Orleans, Louisiana, United States
United States, Maryland
Sinai Hospital of Baltimore
Baltimore, Maryland, United States, 21215
United States, Minnesota
TRIA Orthopaedic Center
Bloomington, Minnesota, United States, 55431
Minnesota Orthopedic Sports Medicine Institute at Twin Cities Orthopedics
Edina, Minnesota, United States, 55435
United States, Missouri
A.T. Still University of Health Sciences
Kirksville, Missouri, United States, 63501
United States, New Jersey
University Orthopaedic Associates
Somerset, New Jersey, United States, 08873
United States, New Mexico
New Mexico Orthopaedic Consultants
Albuquerque, New Mexico, United States, 87106
United States, Oregon
Oregon Health & Science University
Portland, Oregon, United States, 97201
United States, Texas
San Antonio Military Medical Center
San Antonio, Texas, United States, 78234
United States, Virginia
University of Virginia
Charlottesville, Virginia, United States, 22903
United States, Washington
Madigan Army Medical Center
Tacoma, Washington, United States, 98431
Canada, Ontario
Ottawa Hospital
Ottawa, Ontario, Canada
Women's College Hospital
Toronoto, Canada, M5S 1B1
Sponsors and Collaborators
Zimmer Orthobiologics, Inc.

Responsible Party: Zimmer Orthobiologics, Inc. Identifier: NCT01670617     History of Changes
Other Study ID Numbers: CSU2011-03B
First Posted: August 22, 2012    Key Record Dates
Last Update Posted: January 26, 2017
Last Verified: December 2016

Additional relevant MeSH terms:
Knee Injuries
Cartilage Diseases
Leg Injuries
Wounds and Injuries
Musculoskeletal Diseases
Connective Tissue Diseases