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Published in: Archives of Orthopaedic and Trauma Surgery 8/2014

01-08-2014 | Arthroscopy and Sports Medicine

Restoration of joint congruency and the glenoidal labrum after arthroscopic revision Bankart repair: a MRI match-paired analysis comparing primary Bankart repair and the uninjured labrum

Authors: T. Stein, J. Buckup, A. P. Mehling, R. Hoffmann, T. Efe, R. von Eisenhart-Rothe, F. Welsch

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 8/2014

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Abstract

Purpose

The restoration of joint congruency and labrum slope and height after arthroscopic revision Bankart repair (RB) compared to the primary arthroscopic Bankart repair (PB) remain unclear.

Methods

Twenty-three consecutive patients after RB with minor glenoid deficits were matched to 23 patients after PB and retrospectively followed by a score system and native 1.5 T magnetic resonance imaging (MRI) assessment. Bankart repair surgeries were performed using double-loaded knotless suture anchors. The glenoidal (GAA) and labral articulation arc (LAA), labrum slope, height index and morphology were assessed separately for the anterior and inferior glenoid and compared to 23 healthy volunteers [radiologic control group (RC)].

Results

Arthroscopic revision Bankart repair showed 28.0 months post-operative equivalent anterior labral congruency (LAA, 9.3°/PB 9.9°/RC 10.1°) and inferior (LAA 9.9°/PB 9.6°/RC 10.5°). The anterior GAA remain decreased (54.6°/PB 55.7°/RC 58.0°) with an original inferior GAA (85.1°/PB 83.2°/RC 83.8°). The RB labrum was slightly decreased anteriorly (slope 22.9°/PB 23.9°/RC 24.6°; height index 2.4/PB 3.0/RC 3.2). The inferior portion had an equivalent labrum slope (23.8°/PB 24.7°/RC 25.1°), but a decreased height index (2.1/PB 2.2/RC 2.3). Morphologic labrum analysis revealed significant changes between all three groups. The clinical outcome after revision surgery was good-to-excellent, but inferior to the primary stabilization and without influence of joint congruency and labrum morphology to the clinical outcome.

Conclusion

A properly applied arthroscopic revision of a Bankart repair generates sufficient restoration of the anteroinferior labral joint congruency and good clinical results.

Study design

Case series.

Level of evidence

3.
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Metadata
Title
Restoration of joint congruency and the glenoidal labrum after arthroscopic revision Bankart repair: a MRI match-paired analysis comparing primary Bankart repair and the uninjured labrum
Authors
T. Stein
J. Buckup
A. P. Mehling
R. Hoffmann
T. Efe
R. von Eisenhart-Rothe
F. Welsch
Publication date
01-08-2014
Publisher
Springer Berlin Heidelberg
Published in
Archives of Orthopaedic and Trauma Surgery / Issue 8/2014
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI
https://doi.org/10.1007/s00402-014-1990-z

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