AANA19 Knee Access Pass-Knee Lateral Extra-articular Tenodesis Decreases In-situ Force in the ACL-Dr. Justin W. Arner, M.D.

Knee Lateral Extra-articular Tenodesis Decreases In-situ Force in the ACL-Dr. Justin W. Arner, M.D.

Video Transcription

Video Summary

This study investigated lateral extra-articular tenodesis (LET) combined with ACL reconstruction to address rotatory knee instability possibly caused by anterolateral knee structure injury. Using nine cadaveric knees and robotic testing, researchers measured in-situ forces on the ACL, anterolateral capsule, and LET graft under anterior tibial load and internal torque. Results showed LET reduced ACL force at deeper flexions (60° and 90°) in capsular injury, suggesting a protective effect. The LET graft experienced increased force under internal rotation compared to intact capsules, indicating load redistribution. No over-constraint or kinematic changes were noted, but clinical studies are needed to confirm long-term outcomes.

Keywords

lateral extra-articular tenodesis

ACL reconstruction

rotatory knee instability

anterolateral knee structure

cadaveric knee robotic testing