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Stability comparison of anterior cruciate ligament between double- and single-bundle reconstructions.

Authors
Type
Published Article
Journal
International Orthopaedics
1432-5195
Publisher
Springer-Verlag
Publication Date
Volume
33
Issue
2
Pages
425–429
Identifiers
DOI: 10.1007/s00264-008-0530-2
PMID: 18324401
Source
Medline

Abstract

The purpose of this study was to evaluate the intra-operative stability during double-bundle anterior cruciate ligament (ACL) reconstructions (20 knees) using a navigation system and compare the results with those obtained from single-bundle reconstructions (20 knees). After registering the reference points during ACL reconstruction, antero-posterior and rotational stability tests with 30 degrees knee flexion using a navigation system were measured before and after reconstructions on both groups. The change of antero-posterior translation after and before reconstruction was 12.5 mm in the double-bundle group and 10.5 mm in the single-bundle group, showing significant inter-group difference (p=0.014, from 17.5 mm to 5.1 mm in the double-bundle and from 16.6 mm to 6.1 mm in the single-bundle group). The mean rotational stability of the double-bundle group also showed more significant improvement after reconstruction compared to that of the single-bundle group (9.8 degrees in the double- and 5.6 degrees in the single-bundle groups, p<0.001). These findings suggest that a double-bundle ACL reconstruction restores greater knee stability with respect to the antero-posterior and rotational stability than a single-bundle reconstruction.

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