BACKGROUND: Longer-term results of bioabsorbable screws for anterior cruciate ligament reconstruction (ACLR) have been reported, but results are specific to the exact screw material and design. @entity702 and @entity7049 with @entity692 ( @entity15274 -HA) screw outcomes have been compared only to 2 years. PURPOSE/HYPOTHESIS: The purpose of this study was to compare the clinical and radiologic outcomes of the @entity15274 -HA screw versus @entity702 screw for hamstring tendon ACLR over a 5-year follow-up period. The hypothesis was that there are no differences in clinical scores or tunnel widening between the @entity15274 -HA and the @entity702 screws and that the @entity15274 -HA screw as seen on magnetic resonance imaging (MRI) should show high-grade resorption and ossification response over 5 years. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: A total of 40 @entity1 undergoing ACLR were randomized to receive either a @entity15274 -HA screw (PLLA-HA group) or a @entity702 screw ( @entity702 group) for ACL fixation. Blinded evaluation was performed at 2 and 5 years with the International Knee Documentation Committee and Lysholm knee score, KT-1000 arthrometer, single-legged hop test, and MRI to evaluate tunnel and screw volumes, periscrew ossification, graft integration, and cyst formation. RESULTS: There was no difference in any clinical outcome measure at 2- or 5-year follow-up between the 2 groups. At 2 years, the femoral tunnel in the @entity15274 -HA group was smaller than that in the @entity702 group (P = .02); at 5 years, there was no difference. At 2 years, the femoral @entity15274 -HA screw was a mean 76% of its original volume, and by 5 years, it was 36%. At 2 years, the tibial @entity15274 -HA screw mean volume was 68% of its original volume, and by 5 years, it was 46%. At 5 years in the @entity15274 -HA group, 88% of femoral tunnels and 56% of tibial tunnels demonstrated a significant ossification response. There was no increase in cyst formation in the @entity15274 -HA group and no screw breakages. CONCLUSION: There were equivalent clinical results between the @entity15274 -HA and @entity702 groups at 2- and 5-year follow-ups. The @entity15274 -HA screw was not associated with increased tunnel widening or cyst formation when compared with the @entity702 screw. The @entity15274 -HA screw demonstrated progressive screw resorption and gradual but incomplete ossification over 5 years.

Bioabsorbable Versus XXXX Screws in Anterior Cruciate Ligament Reconstruction Using Hamstring Autograft: A Prospective, Blinded, Randomized Controlled Trial With 5-Year Follow-up.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity15274 :: ('CHEBI:53408', 'Chemical') :: ['PLLA'] @entity7049 :: ('MESH:C010506', 'Chemical') :: ['poly-L-lactic acid'] @entity692 :: ('MESH:D017886', 'Chemical') :: ['hydroxyapatite'] @entity702 :: ('MESH:D014025', 'Chemical') :: ['titanium', 'Titanium']
@entity702 :: (MESH:D014025,Chemical) :: ['Titanium']
