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Sports Medicine

Differences in tunnel enlargement between cortical button and bioscrew fixation for ACLR

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SPORTS MEDICINE

Differences in tunnel enlargement between cortical button and bioscrew fixation for ACLR .

Comparison of Tunnel Enlargement and Clinical Outcome Between Bioabsorbable Interference Screws and Cortical Button-Post Fixation in Arthroscopic Double-Bundle Anterior Cruciate Ligament Reconstruction: A Prospective, Randomized Study With a Minimum Follow-Up of 2 Years

Arthroscopy. 2019 Feb;35(2):544-551. doi: 10.1016/j.arthro.2018.08.039

Contributing Authors

HL Ma ER Chiang HT Wu ST Wang CL Liu TH Chen MC Chang KH Chen A Chih-Chang Lin

60 patients scheduled for double-bundle anterior cruciate ligament reconstruction were randomized to either bioabsorbable interference screw fixation or cortical button fixation. Primary interest was tunnel enlargement after a minimum of 2 years after surgery. Clinical scores and knee laxity tests were also assessed. Results demonstrated significantly greater enlargement in the anteromedial tunnels on both the femoral and tibial side in the bioabsorbable screw group, while enlargement in the posterolateral tunnel on the tibial side was significantly greater in the cortical button group. Nonetheless, IKDC scores, KOOS scores, KT-1000 arthrometer results and pivot shift test grading did not significantly differ between groups.

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