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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

01-04-2021 | KNEE

Remnant preservation does not affect accuracy of tibial tunnel positioning in single-bundle ACL reconstruction

Authors: Jonathan D. Kosy, Katie Walmsley, Elizabeth A. Gordon, Sadie V. Heddon, Rahul Anaspure, Peter J. Schranz, Vipul I. Mandalia

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 4/2021

Abstract

Purpose

Remnant preservation, in anterior cruciate ligament (ACL) reconstruction, has potential biological advantages. However, graft positioning remains vital to functional outcome and the prevention of failure. The aim of this study was to investigate the accuracy and precision of tibial tunnel positioning in remnant preservation single-bundle hamstring reconstruction.

Methods

Fifty consecutive adult patients, with isolated ACL rupture, were recruited to a prospective study. Remnant preservation was performed in all cases where > 25% of the native ACL was present. Three-dimensional computer tomography was preformed 3–6 months post-operatively to assess tibial tunnel position (using a grid-based measurement). Accuracy and precision of this technique were assessed against published anatomical data in direct comparison with the group where remnant preservation could not be performed.

Results

Two patients withdrew following surgery. In the remaining groups (31 remnant preservation; 17 non-remnant preservation), no difference was demonstrated in tunnel position (40.4 ± 6.7% (anterior-to-posterior) and 47.4 ± 1.5% (medial-to-lateral) vs. 38.8 ± 4.9% and 46.7 ± 1.5%, respectively; n.s.), accuracy (6.1% vs. 4.8%; n.s.) or precision (3.9% vs. 2.8%; n.s.).

Conclusions

Remnant preservation can be safely performed without compromising tunnel position. Therefore, the potential benefits of this technique can be utilised, in clinical practice, without sacrificing the ability to optimize tibial tunnel positioning.

Level of evidence

III.

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Title: Remnant preservation does not affect accuracy of tibial tunnel positioning in single-bundle ACL reconstruction
Authors: Jonathan D. Kosy
Katie Walmsley
Elizabeth A. Gordon
Sadie V. Heddon
Rahul Anaspure
Peter J. Schranz
Vipul I. Mandalia
Publication date: 01-04-2021
Publisher: Springer Berlin Heidelberg
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 4/2021
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-020-06125-y

At a glance: The STEP trials

Springer Medicine

Remnant preservation does not affect accuracy of tibial tunnel positioning in single-bundle ACL reconstruction

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

At a glance: The STEP trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

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