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Abstract Presented at the 26th Annual Meeting of the Arthroscopy Association of North America| Volume 23, ISSUE 6, SUPPLEMENT , e5, June 2007

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Double-Bundle vs. Single-Bundle Anterior Cruciate Ligament Reconstruction: Prospective, Randomize Clinical Study (SS-08)

      Summary

      Sixty-five patients were randomized into either double-bundle (n = 35) or single-bundle (n = 30) ACL reconstruction with hamstring tendons and bioabsorbable screw (Hexalon, Inion Company, Finland) fixation in both group. At the 1-year follow-up, the rotational stability and the early anterior stability were significantly better in the double-bundle group than in the single-bundle group. In addition, none of the patients in double-bundle group had graft failure, while four patients in the single-bundle group had. However, knee scores were equal at the follow-up, and all the results were significantly better at the follow-up than preoperatively, in both groups.

      Purpose

      The purpose of this prospective, randomize clinical study is to compare the outcomes of anterior cruciate ligament reconstruction when using either double-bundle or single-bundle technique and bioabsorbable interference screw fixation with both techniques.

      Methods

      Sixty-five patients were randomized into either double-bundle (n = 35) or single-bundle (n = 30) ACL reconstruction with hamstring tendons and bioabsorbable screw (Hexalon, Inion Company, Finland) fixation in both group. The evaluation methods were clinical examination, KT-1000 arthrometer measurements, radiographic evaluation, as well as International Knee Documentation Committee (IKDC), and Lysholm knee scores.

      Results

      There were no differences between the study groups preoperatively. For the minimum of 1-year follow-up (range, 12 to 19 months), 31 patients of the double-bundle group and 27 patients of the single-bundle group were available (89%). At the follow-up, the rotational stability, as evaluated by pivot shift test, was significantly better in the double-bundle group than in the single-bundle group. Also, the early anterior stability was significantly better with double-bundle technique, although at 1-year follow-up, no significant difference between the groups was found anymore. In addition, none of the patients in double-bundle group had graft failure, while four patients in the single-bundle group had. However, knee scores were equal at the follow-up, and all the results were significantly better at the follow-up than preoperatively, in both groups.

      Conclusions

      Rotational stability and early anterior stability were significantly better with double-bundle technique than with single-bundle technique in ACL reconstruction with hamstring autografts and bioabsorbable screw fixation. However, both fixation techniques improved patients’ performance.