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How to Avoid Knee Tunnel Convergence When Performing a Modified Lemaire Extra-Articular Tenodesis.

ABSTRACT: There has been a significant increase in the number of anterior cruciate ligament (ACL) reconstruction (ACLR) procedures being performed with a lateral extra-articular procedure (LEAP). However, tunnel convergence in combined ACLR and LEAP techniques has been described and can lead to damage to the graft or graft failure. This technical note describes how to avoid knee tunnel convergence when performing a modified Lemaire extra-articular tenodesis using a knotless suture anchor.

SUBMITTER: Hopper GP

PROVIDER: S-EPMC9244758 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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How to Avoid Knee Tunnel Convergence When Performing a Modified Lemaire Extra-Articular Tenodesis.

Hopper Graeme P GP El Helou Abdo A Philippe Corentin C Campos Joao Pedro JP Vieira Thais Dutra TD Sonnery-Cottet Bertrand B

Arthroscopy techniques 20220621 6

There has been a significant increase in the number of anterior cruciate ligament (ACL) reconstruction (ACLR) procedures being performed with a lateral extra-articular procedure (LEAP). However, tunnel convergence in combined ACLR and LEAP techniques has been described and can lead to damage to the graft or graft failure. This technical note describes how to avoid knee tunnel convergence when performing a modified Lemaire extra-articular tenodesis using a knotless suture anchor. ...[more]

PMID: 35782851

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Project description:Purpose To identify the risk of anterior cruciate ligament (ACL) femoral tunnel penetration with the use of a staple for lateral extra-articular tenodesis (LET) graft fixation and to determine whether this varied between 2 different techniques for ACL femoral tunnel drilling. Methods Twenty paired, fresh-frozen, cadaver knees underwent ACL reconstruction with a LET. Left and right knees were randomized to ACL reconstruction with femoral tunnel creation by use of either a rigid guide pin and reamer through the accessory anteromedial portal or by the use of a flexible guide pin and reamer through the anteromedial portal. Immediately after tunnel creation, the LET was performed and fixated with a small Richard’s staple. Fluoroscopy was used to obtain a lateral view of the knee to determine staple position, and visualization of the ACL femoral tunnel was performed with the arthroscope to investigate penetration of the staple into the femoral tunnel. The Fisher exact test was conducted to determine whether there was any difference in tunnel penetration between tunnel creation techniques. Results The staple was noted to penetrate the ACL femoral tunnel in 8 of 20 (40%) extremities. When stratified by tunnel creation technique, the Richards staple violated 5 of 10 (50%) of the tunnels made via the rigid reaming technique compared with 3 of 10 (30%) of those created with a flexible guide pin and reamer (P = .65). Conclusions A high incidence of femoral tunnel violation is seen with lateral extra-articular tenodesis staple fixation. Level of Evidence Level IV, controlled laboratory study. Clinical Relevance The risk of penetrating the ACL femoral tunnel with a staple for LET graft fixation is not well understood. Yet, the integrity of the femoral tunnel is important for the success of ACL reconstruction. Surgeons can use the information in this study to consider adjustments to operative technique, sequence, or fixation devices used when performing ACL reconstruction with concomitant LET to avoid the potential for disruption of ACL graft fixation.

Dataset Information

How to Avoid Knee Tunnel Convergence When Performing a Modified Lemaire Extra-Articular Tenodesis.

Publications

How to Avoid Knee Tunnel Convergence When Performing a Modified Lemaire Extra-Articular Tenodesis.

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