SINGLE VERSUS DOUBLE BUNDLE TECHNIQUE IN ACL RECONSTRUCTION USING DSTG GRAFT. PRELIMINARY RESULTS

Abstract

Purpose: Prospectively compare 3 different techniques of ACL reconstruction with autologous hamstrings graft.

Material and methods: 3 comparable groups of 25 knees each were selected. An arthroscopic single incision reconstruction was performed in all groups. In group A, a single bundle graft was inserted. In group B a double bundle reconstruction was performed with 1 tibial and 2 femoral tunnels. In group C, 2 tibial and 2 femoral tunnels were drilled. Fixation was achieved in all knees with Endobutton CL proximally and Washerloc screw distally. Outcome assessment was performed at 4 and 12 months postoperatively by an independent observer, using new IKDC evaluation form, the KT-1000 arthrom-eter, and a radiographic investigation.

Results: At 12 months FU the subjective score was 81 in group A, 76 in group B, and 89 in group C. The final IKDC score was satisfactory (A+B) in over 90% of the patients. The KT-1000 anterior tibial translation was 2.3, 2.5 and 1.9 mm in group A, B, and C respectively. The radiographic study showed no differences between the 3 groups in terms of incidence of tunnel widening.

Conclusions: At a minimum FU of 1 year we could not show a statistically advantage of the two bundle compared to the single bundle.