Multicenter ACL Revision Study (MARS) (MARS)
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|ClinicalTrials.gov Identifier: NCT00625885|
Recruitment Status : Active, not recruiting
First Posted : February 28, 2008
Last Update Posted : April 27, 2020
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 or disease|
|Rupture of Anterior Cruciate Ligament|
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 2, 6, and 10 years following a patient's revision ACL reconstruction. 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, 6, and 10 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.
|Study Type :||Observational|
|Actual Enrollment :||1234 participants|
|Official Title:||Multicenter ACL Revision Study (MARS)|
|Study Start Date :||February 2007|
|Estimated Primary Completion Date :||December 2021|
|Estimated Study Completion Date :||December 2022|
- Graft re-rupture [ Time Frame: 2, 6, and 10 years after revision ACL surgery ]
- Patient based outcome measures [ Time Frame: 2, 6, and 10 years after revision ACL surgery ]Activity level (as measured by the Marx activity scale). Sports function (as measured by the KOOS and IKDC). Pain and swelling (as measured by the WOMAC).
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 ClinicalTrials.gov identifier (NCT number): NCT00625885
|Principal Investigator:||Rick W. Wright, M.D.||Vanderbilt University Medical Center|
|Principal Investigator:||Kurt P. Spindler, M.D.||Vanderbilt University Medical Center|