Three-dimensional magnetic resonance imaging of the anterolateral ligament of the knee: an evaluation of intact and anterior cruciate ligament–deficient knees from the scientific anterior cruciate ligament network international (SANTI) Study Group

Muramatsu, K., Saithna, A. ORCID: 0000-0002-2408-5307, Watanabe, H., Sasaki, K., Yokosawa, K., Hachiya, Y., Banno, T., Helito, C.P. and Sonnery-Cottet, B., 2018. Three-dimensional magnetic resonance imaging of the anterolateral ligament of the knee: an evaluation of intact and anterior cruciate ligament–deficient knees from the scientific anterior cruciate ligament network international (SANTI) Study Group. Arthroscopy: The Journal of Arthroscopic & Related Surgery, 34 (7), pp. 2207-2217. ISSN 0749-8063

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Abstract

Purpose: The aim of this study was to determine the visualisation rate of the ALL in uninjured and ACL deficient knees when using 3D-MRI. In addition, it was sought to characterize the spectrum of ALL injury in acute and chronically ACL deficient knees, and also to determine the inter and intra-observer reliability of a 3D-MRI classification of ALL injury.

Methods: 100 knees underwent 3D-MRI (60 with ACL rupture and 40 non-injured knees). The ALL was evaluated by two blinded orthopaedic surgeons. The ALL was classified as Type A: continuous, clearly defined low-signal band, Type B: with warping, thinning, or iso-signal changes, Type C: without clear continuity. Comparison between acute (<1 month) and chronically ACL injured knees was evaluated as well as intra and inter-observer reliability.

Results: Complete visualisation of the full path of the ALL was achieved in all non-injured knees. In the ACL injured group, 24 acutely injured knees were imaged: 87.5% showed evidence of injury (3 knees were normal/Type A (12.5%), 18 Type B (75.0%), and 3 Type C (12.5%)). 36 knees chronically ACL injured knees were imaged: 55.6% showed evidence of injury (16 Type A (44.4%), 18 Type B (50.0%), and 2 Type C (5.6%)). The difference in the rate of injury between the two groups was significant (p = 0.03). Multivariate analysis demonstrated that the delay from ACL injury to MRI was the only factor (negatively) associated with the rate of injury to the ALL. Inter- and intra-observer reliability of the classification of ALL type were good (kappa 0.86 and 0.93 respectively).

Conclusion: 3D-MRI allows full visualisation of the ALL in all knees. The rate of injury to the ALL in acutely ACL injured knees identified on 3D-MRI is higher than previous reports using standard MRI techniques. This rate is significantly higher than the rate of injury to the ALL identified in chronically ACL injured knees.

Level of Evidence: IV, Diagnostic, case control study.

Item Type: Journal article
Publication Title: Arthroscopy: The Journal of Arthroscopic & Related Surgery
Creators: Muramatsu, K., Saithna, A., Watanabe, H., Sasaki, K., Yokosawa, K., Hachiya, Y., Banno, T., Helito, C.P. and Sonnery-Cottet, B.
Publisher: Elsevier
Date: July 2018
Volume: 34
Number: 7
ISSN: 0749-8063
Identifiers:
NumberType
10.1016/j.arthro.2018.02.014DOI
S0749806318301403?via%3DihubPublisher Item Identifier
Divisions: Schools > School of Science and Technology
Depositing User: Linda Sullivan
Date Added: 26 Oct 2018 11:32
Last Modified: 02 May 2019 03:00
URI: http://irep.ntu.ac.uk/id/eprint/34756

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