Tibial inlay reconstruction of the medial collateral ligament using Achilles tendon allograft for the treatment of medial instability of the knee.

Although various surgical procedures have been described for the medical collateral ligament (MCL) reconstruction, none can accurately reestablish its original anatomy and orientation. The purpose of this study was to present a technique restoring the anatomy and stability of the medial knee with an Achilles tendon allograft using a tibial inlay technique. The bone block was fixed into a cancellous trough created on the medial surface of the tibia with a cancellous screw and washer, while the tendinous portion was fixed into the femoral insertion site of the superficial MCL with a bioabsorbable interference screw. This technique can successfully reproduce the native anatomy and orientation of the MCL.