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Open Access 01-12-2021 | Research article

Clinical study of anatomical ACL reconstruction using a rounded rectangular dilator

Authors: Junsuke Nakase, Yasushi Takata, Kengo Shimozaki, Kazuki Asai, Rikuto Yoshimizu, Mitsuhiro Kimura, Hiroyuki Tsuchiya

Published in: BMC Musculoskeletal Disorders | Issue 1/2021

Abstract

Background

The aim of this study was that to compare clinical results between the rounded rectangular femoral tunnel ACL reconstruction (RFTR) and the conventional round femoral tunnel ACL reconstruction using a hamstring tendon. The hypothesis was that ACL reconstruction performed using the rounded rectangular dilator technique was better than that performed using the conventional round femoral tunnel technique in terms of clinical results and bone tunnel enlargement.

Methods

We conducted retrospective study. After exclusions, 40 patients were included in the conventional anatomical single-bundle ACL reconstruction (ASBR) group and 40 patients were included in the RFTR group. The evaluation items were knee stability, Lysholm knee score, IKDC subjective score at 2 years after surgery and bone tunnel enlargement.

Results

The RFTR group had a larger femoral tunnel area (average area, 53.1 ± 4.0 mm² vs. 46.1 ± 7.0 mm²; P < 0.01), better anteroposterior stability, and higher Lysholm scores than the ASBR group (average side-to-side difference for anterior tibial translation, 0.6 ± 0.8 mm vs. 1.6 ± 1.4 mm; P < 0.01; average Lysholm score, 98.5 ± 2.1 vs. 97.5 ± 3.5; P < 0.01). Further, bone tunnel enlargement ratio was significantly lower in the RFTR group (73 ± 38% vs. 107 ± 41%; P < 0.01).

Conclusions

We designed and developed an original rounded rectangular dilator to perform a novel ACL surgery. This technique can create a larger bone tunnel and improve clinical results than the conventional round anatomical single-bundle ACL reconstruction.

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Title: Clinical study of anatomical ACL reconstruction using a rounded rectangular dilator
Authors: Junsuke Nakase
Yasushi Takata
Kengo Shimozaki
Kazuki Asai
Rikuto Yoshimizu
Mitsuhiro Kimura
Hiroyuki Tsuchiya
Publication date: 01-12-2021
Publisher: BioMed Central
Published in: BMC Musculoskeletal Disorders / Issue 1/2021
Electronic ISSN: 1471-2474
DOI: https://doi.org/10.1186/s12891-020-03913-y

At a glance: The STEP trials

Springer Medicine

Clinical study of anatomical ACL reconstruction using a rounded rectangular dilator

Abstract

Background

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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