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Post Market Study of DeNovo NT, Natural Tissue Graft

This study has been completed.
Information provided by (Responsible Party):
Zimmer Orthobiologics, Inc. Identifier:
First received: November 13, 2008
Last updated: August 7, 2014
Last verified: August 2014
The purpose of this post market study is to evaluate surgical implantation technique and the quality of repair of the cartilage defect with particulated juvenile cartilage in the human knee joint.

Condition Intervention
Cartilage Repair
Biological: Particulated Juvenile Cartilage Allograft

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: A Post Market Study of Articular Cartilage Defects of the Knee Treated Wtih DeNovo NT, Natural Tissue Graft

Further study details as provided by Zimmer Orthobiologics, Inc.:

Primary Outcome Measures:
  • KOOS [ Time Frame: Preoperatively, postoperatively at 10 Days, 3, 6, 12, 18 & 24 Months ]

Secondary Outcome Measures:
  • IKDC Subjective Knee Evaluation [ Time Frame: Preopertively, postoperatively at 10 Days, 3, 6, 12, 18, & 24 Months ]

Enrollment: 25
Study Start Date: January 2006
Study Completion Date: August 2012
Primary Completion Date: August 2012 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
DeNovo NT
Biological: Particulated Juvenile Cartilage Allograft
Particulated Juvenile Cartilage Allograft

Detailed Description:
The intent of this post market study is to assess the clinical outcomes of DeNovo NT, a particulated juvenile cartilage tissue for the treatment of one or two contained lesion(s) equal to an ICRS Grade 3a, 3b, 3c, 3d of the femoral condyle or trochlear groove and OCD lesions (Grade 4a) with healed bone base, which is non sclerotic and no loss of bone greater thank 6mm measured from the surrounding subchondral plate.

Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Clinical population

Inclusion Criteria:

  • Voluntary signature of the IRB approved Informed Consent
  • Male or female subjects between the ages of 18 to 55 years
  • If female:

    • Actively practicing a contraception method, or
    • Practicing abstinence, or
    • Surgically sterilized, or
    • Postmenopausal
  • Pretreatment arthroscopic confirmation indicating one or two contained lesion(s) are equal to an ICRS Grade 3a, 3b, 3c, 3d of the femoral condyle or trochlear groove and OCD lesions (Grade 4a) with healed bone base, which is non sclerotic and no loss of bone greater than 6mm measured from the surrounding subchondral plate,
  • Has peripheral cartilage debridement to healthy cartilage that results in a lesion(s) with an area of greater than or equal to 1 cm squared and less than or equal to 5 cm squared,
  • PCL, LCL and MCL in the affected knee are stable and the ACL is stable or can be stabilized as a concomitant procedure,
  • Ipsilateral knee compartment has intact menisci (or requires partial meniscectomy resulting in stable menisci),
  • The contralateral knee is asymptomatic, stable and fully functional,
  • Must be physically and mentally willing and able to comply with post-operative rehabilitation and routinely schedule clinical and radiographic visits through 24 months.

Exclusion Criteria:

  • Clinical and/or radiographic 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,
    • Osteochondritis dissecans of the knee with significant bone loss (greater than 6mm deep from the subchondral plate),
    • Associated damage to the underlying subchondral bone requiring an osteochondral graft,
  • History of secondary arthropathies (i.e. sickle cell disease, hemochromatosis, or autoimmune disease),
  • Uncontrolled diabetes,
  • Displays a high surgical risk due to unstable cardiac and/or pulmonary disease,
  • Has HIV or other immunodeficient state including subjects on immunosuppressant therapies, or has significant illness (metastasis of any type) that decreases the probability of survival to the 2 year endpoint,
  • Is at substantial risk for the need of organ transplantation, such as renal insufficiency,
  • Is pregnant or breast-feeding,
  • Body Mass Index >35 (BMI=kg/m2),
  • Has bipolar articular cartilage involvement or kissing lesions of the ipsilateral compartment, described as tibial or patellar lesions in the same compartment with greater than ICRS Grade 2 chondrosis,
  • Is participating concurrently in another clinical trial, or has participated ina clinical trial within 30 days of surgery,
  • 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,
  • Has a neuromuscular, neurosensory, or musculoskeletal deficiency that limits the ability to perform objective functional assessment of either knee,
  • Active joint infection,
  • Prior total meniscectomy of either knee,
  • Radiographically has >5 degrees of malalignment as measured from the hip, knee and ankle mechanical axis,
  • Has received, within the past three months intra-articular hyaluronic acid therapy or cortisone injections in the index knee,
  • Prior realignment surgery in the affected knee within the past 6 months,
  • Failed microfracture treatment performed less than 12-months before baseline,
  • Is receiving workman's compensation or currently involved in litigation relating to the index knee,
  • Has history of alcoholism, medication or intravenous drug abuse, psychosis, is a prisoner, has a personality disorder(s), poor motivation, emotional or intellectual issues that would likely make the subject unreliable for the study, or any combination of variables in the investigator's judgement that should exclude a potential subject,
  • Had or have an aneurysm clip implanted, intraocular foreign bodies (commonly seen in welders), subcutaneous metal shards (found in sheet metal workers), or some shrapnel; additionally no cardiac pacemaker, defibrillator, implanted neurostimulator (TENS implants), some prosthetic heart valve (especially mitral valve), cochlear implant or other hearing aid, or has a tendency of claustrophobia. Have tattoos that may contain iron-based dyes.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00791245

United States, Illinois
Midwest Orthopaedics at Rush
Chicago, Illinois, United States, 60612
United States, Indiana
Indianapolis, Indiana, United States, 46237
United States, New Mexico
New Mexico Orthopaedic Association, PC
Albuquerque, New Mexico, United States, 87106
Sponsors and Collaborators
Zimmer Orthobiologics, Inc.
  More Information

Responsible Party: Zimmer Orthobiologics, Inc. Identifier: NCT00791245     History of Changes
Other Study ID Numbers: ISTO - DeNovo NT 03-07-02
Study First Received: November 13, 2008
Last Updated: August 7, 2014

Keywords provided by Zimmer Orthobiologics, Inc.:
ISTO Technologies, Inc
cartilage repair
361 HCT/P
human tissue
knee processed this record on May 25, 2017