2022 AOSSM Annual Meeting Recordings with CME-Biomechanical Analysis of Tibial Motion and ACL Graft Forces after ACLR with and without LET at Varying Tibial Slopes

Biomechanical Analysis of Tibial Motion and ACL Graft Forces after ACLR with and without LET at Varying Tibial Slopes

Video Transcription

Video Summary

In this video, the speaker discusses the impact of posterior tibial slope on ACL graft forces and the potential benefits of adding lateral extra-articular tenodesis (LAT) to ACL reconstruction. The study involved performing ACL reconstruction on cadaveric knees and measuring graft force, anterior tibial translation, and internal rotation at different flexion angles and posterior slopes. The results showed that increasing posterior tibial slope led to increased graft force and anterior tibial translation, regardless of whether LAT was added or not. However, at 30 degrees of flexion, LAT reduced graft force by approximately 8.3%. While LAT showed some protective effects, the study suggests that posterior tibial slope correction may be more effective in reducing graft force.

Asset Caption

Stephanie Pearce, MD

Keywords

posterior tibial slope

ACL graft forces

lateral extra-articular tenodesis

ACL reconstruction

cadaveric knees