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Sponsored by: |
Vanderbilt University |
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Information provided by: | Vanderbilt University |
ClinicalTrials.gov Identifier: | NCT00625885 |
The purpose of this study is to determine the effects of modifiable risk factors on patient-reported quality of life, physical activity levels, and risk of early osteoarthritis following revision anterior cruciate ligament (ACL) reconstruction.
The investigators hypothesize that modifiable variables exist at the time of revision ACL reconstruction (e.g., cause of failure, current graft source and type, surgical exposure, and femoral and tibial tunnel position) which will be predictors of patient-reported outcomes.
Condition |
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Anterior Cruciate Ligament |
Study Type: | Observational |
Study Design: | Cohort, Prospective |
Official Title: | Multicenter ACL Revision Study (MARS) |
Estimated Enrollment: | 800 |
Study Start Date: | February 2007 |
Estimated Study Completion Date: | November 2012 |
Estimated Primary Completion Date: | November 2012 (Final data collection date for primary outcome measure) |
Injury to the anterior cruciate ligament (ACL) results in a threat to an active lifestyle and exposes the patient to risk of osteoarthritis. ACL reconstruction is typically chosen by individuals to allow a return to their previous work and sports activities. The results of primary ACL reconstruction have in general been good at restoring functional stability. Primary ACL reconstruction has a graft failure rate ranging from approximately 2%-8%. Consensus amongst surgeons and low-level evidence (retrospective case series) indicate a worse outcome following revision ACL reconstruction compared to primary reconstruction. The typical surgeon performs less than 10 revision ACL reconstructions per year. Thus, the ability of any single surgeon or small group of surgeons to accumulate enough cases to effectively analyze predictors for worse outcome is impossible.
With this in mind, the Multi-Center ACL Revision Study (MARS) group was established as a multi-center surgeon group to perform a prospective longitudinal cohort analysis of revision ACL reconstruction. This is a mixed group of academic and private practice physicians and has been supported and endorsed by the American Orthopedic Society for Sports Medicine (AOSSM).
This study focuses on the predictors for ACL revision outcome at two-year follow-up. This will be accomplished by three Specific Aims. Specific Aim 1 will determine the independent predictors of patient-reported quality of life, utilizing a general (SF-36) and knee-specific (Knee Injury and Osteoarthritis Outcome Score - KOOS) validated outcome instrument. Specific Aim 2 will determine the independent predictors of sports function utilizing three validated outcome instruments (the Marx activity level, International Knee Documentation Committee Subjective form - IKDC, and the KOOS sports and recreation subscale). Specific Aim 3 will identify those independent modifiable predictors measured at the time of the revision ACL reconstruction associated with symptoms of early osteoarthritis at 2 years post-surgery. Symptoms will be quantified using the validated survey instrument the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Once the predictors for these worse outcomes are identified, surgeons can be educated in potential modifiable variables to improve the outcome.
Ages Eligible for Study: | 12 Years to 65 Years |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
All ACL-deficient candidates scheduled for a revision ACL reconstruction at one of the participating MARS sites.
Inclusion Criteria:
The following graft types will be the only ones accepted for inclusion:
Fresh-frozen allografts from a single donor source (Musculoskeletal Transplant Foundation (MTF); Edison, NJ). These grafts should consist of either:
Exclusion Criteria:
Principal Investigator: | Rick W. Wright, M.D. | Washington University, St. Louis |
Principal Investigator: | Kurt P. Spindler, M.D. | Vanderbilt University |
Responsible Party: | Vanderbilt University Medical Center ( Kurt P. Spindler, M.D. ) |
Study ID Numbers: | 070110 |
Study First Received: | February 19, 2008 |
Last Updated: | September 5, 2008 |
ClinicalTrials.gov Identifier: | NCT00625885 |
Health Authority: | United States: Institutional Review Board |
Anterior Cruciate Ligament/injuries Anterior Cruciate Ligament/surgery Knee injuries/surgery Outcomes research Prospective Studies |
Knee Injuries |