Cost-effectiveness of anterior cruciate ligament reconstruction: A preliminary comparison of single-bundle and double-bundle techniques

Background: There has been growing interest in anatomical reconstruction of the anterior cruciate ligament (ACL), including the use of double-bundle (DB) reconstruction techniques. Hypothesis: The DB technique will not be cost-effective when compared with single-bundle (SB) reconstruction. Study Design: Economic and decision analysis; Level of evidence, 1. Methods: A decision-analysis model with input values derived from the literature was used to estimate the cost-effectiveness of DB ACL reconstruction compared with SB ACL reconstruction. Effectiveness was based on the revision rate and the postoperative International Knee Documentation Committee (IKDC) score. Results: Sixty-four percent of DB knees result in an IKDC score of A, compared with 54% of SB knees. The incremental cost-effectiveness ratio of a DB reconstruction compared with an SB reconstruction was $6416 per quality adjusted life year in the baseline scenario and $64 371 per quality adjusted life year in the alternate scenario. The model is very sensitive to the proportions of IKDC A outcomes. The model is also sensitive to the utility values assigned to IKDC A and B outcomes and is less sensitive to the marginal cost of a DB reconstruction. Conclusion: This preliminary analysis based on published clinical results to date shows DB ACL reconstruction may be cost-effective, despite increased upfront cost. More research is needed to confirm whether there is any difference in the distribution of IKDC outcomes between the 2 techniques. Perhaps more importantly, the lack of any other demonstrated clinical benefit from the DB technique questions the clinical relevance of this difference in IKDC scores. Clinical Relevance: Revision data and longer term outcomes after DB reconstruction and more reliable clinical utility data are needed to definitively compare the cost-effectiveness of DB and SB ACL reconstruction. Studies of ACL reconstruction and other sports medicine procedures should report the distribution of outcomes data to facilitate future analyses of clinical effectiveness.