Abstract
Objective The present study aims to evaluate different methods of tibial fixation in the reconstruction
of the anterolateral ligament (ALL). In addition, the present paper aims to compare
the effectiveness of these methods and their mechanisms of failure in swine knees.
Methods A total of 40 freshly frozen swine limbs were divided into 4 groups of 10 specimens,
according to the tibial fixation technique used. In group A, the tibial fixation of
the tendon graft was made through an anchor passing the graft. In group B, the tibial
fixation was performed through a metal interference screw in a single bone tunnel.
In group C, the tibial fixation included an anchor associated with a tendinous suture
(but not with a wire crossing the tendon). In group D, two confluent bony tunnels
were drilled and combined with an interference screw in one of them.
Results The lowest mean force (70.56 N) was observed in group A, and the highest mean force
(244.85 N) was observed in group B; the mean values in the other 2 groups ranged from
171.68 N (group C) to 149.43 N (group D). Considering the margin of error (5%), there
was a significant difference between the groups (p < 0.001).
Conclusion Fixation with an interference screw in a single tunnel bone showed the highest tensile
strength among the evaluated techniques.
Keywords
anterior cruciate ligament - articular ligaments - knee - orthopedic procedures
