Clinical Outcome Study of the Triad Allograft for Posterior Lumbar Fusion

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: NCT00205101
Recruitment Status : Completed
First Posted : September 20, 2005
Last Update Posted : December 19, 2007
Information provided by:
University of Wisconsin, Madison

September 13, 2005
September 20, 2005
December 19, 2007
September 2004
Not Provided
Not Provided
Not Provided
Complete list of historical versions of study NCT00205101 on Archive Site
Not Provided
Not Provided
Not Provided
Not Provided
Clinical Outcome Study of the Triad Allograft for Posterior Lumbar Fusion
Clinical Outcome Study of the Triad Allograft for Posterior Lumbar Fusion

The purpose of the study is to prospectively measure pain, function, and patient satisfaction in 70 consecutive patients treated by lumbar fusion using the Triad allograft. Results of the Triad allograft will be compared to those of other anterior lumbar interbody fusion (ALIF), transforaminal lumbar interbody fusion (TLIF), and posterior lumbar interbody fusion (PLIF) surgeries. Patient participation is based on the physician determination that the patient requires one of these surgeries. Participants will be evaluated pre-operatively and post-operatively at 3, 6, 12,and 24 month intervals. Clinic procedures will be related to standard of care except for the completion of several study questionnaires:

  1. Back Pain Questionnaire;
  2. Oswestry Disability Index Questionnaire;
  3. Short Form-36 (SF-36) Survey;
  4. Visual Analog Pain Scale (VAS); and
  5. The Modems Patient Satisfaction Survey.

Outcome Measurements:

  1. The patient's pain is scored by a VAS normalized to 100;
  2. Patient function is based on Oswestry scores;
  3. General health is assessed by SF-36 completion; and
  4. Overall patient satisfaction will be determined by the completion of the Modems.
Not Provided
Observational Model: Cohort
Time Perspective: Prospective
Not Provided
Not Provided
Not Provided
Not Provided
  • Pain
  • Stenosis
  • Spondylolisthesis
Not Provided
  • 1
    Triad allograft
  • 2
    other anterior lumbar interbody fusion (ALIF)
  • 3
    transforaminal lumbar interbody fusion (TLIF)
  • 4
    posterior lumbar interbody fusion (PLIF)
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
Not Provided
Not Provided

Inclusion Criteria:

  1. Voluntary consent for an observational study
  2. One of the following diagnoses:

    • isthmic spondylolisthesis,
    • degenerative spondylolisthesis,
    • pseudoarthritis,
    • severe foraminal stenosis, and
    • prior failed discectomies
  3. Single, two, or three level fusions
  4. Patients require treatment by TLIF or PLIF posterior fusion as determined by surgeon. Pedicle screw instrumentation will be placed in all cases.

Exclusion Criteria:

  1. Infection at operative site
  2. Severe osteoporosis
  3. Inability to return for follow-up.
Sexes Eligible for Study: All
18 Years and older   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
United States
HSC# 2004-0235
Not Provided
Not Provided
Not Provided
Paul Anderson MD, University of Wisconsin
University of Wisconsin, Madison
Principal Investigator: Paul Anderson, MD University of Wisconsin, Madison
University of Wisconsin, Madison
December 2007