Outcomes of All-Inside Arthroscopic ACL Reconstruction with Lateral Extra-Articular Tenodesis (ACLR + LET).

BACKGROUND

Anatomic single-bundle ACL reconstruction (ACLR) produces good results when the graft and tunnel are positioned in the anatomic footprint on the femoral and tibial insertion sites in a more oblique orientation. The of the knee and its biomechanical role in controlling rotational laxity, internal rotation, and pivot shift has led to adding adjunctive procedures like extra-articular augmentation and lateral extra-articular tenodesis (LET) to decrease rotational laxity. We prospectively analyzed young adults with rotational instability and generalized laxity undergoing an arthroscopic single bundle ACLR with an additional LET procedure.

METHODS

42 patients, aged between 20 and 50, undergoing all-inside ACLR augmented with concomitant lateral extra-articular tenodesis between November 2020 and October 2021 were included. All patients were followed up for one year and functional assessment comprised of the International Knee Documentation Committee [IKDC] score, visual analogue score [VAS], and Lysholm Knee Scoring Scale at 6 months and 1 year. Return to activity was assessed using the Tegner Activity Score.

RESULTS

The Lysholm score, IKDC score, and VAS showed significant improvements at 6 months after ACLR + LET ( < 0.0001) and further improved significantly at 1 year. The patients had a significant decline in the Tegner Activity Scale at 6 months but returned to the near pre-injury level (5.98 ± 0.924) at 1 year (5.67 ± 0.816) which was insignificant ( = 0.1067). Three patients sustained mild complications. 93% were satisfied with the surgery, 66% returned to sports and no patient underwent re-operation.

CONCLUSIONS

Combination of LET with ACLR produces good functional outcomes, high rates of return to sports activities, and no graft failure in young patients at high risk of failure.