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Erschienen in: International Orthopaedics 9/2020

12.05.2020 | Original Paper

Comparative biomechanical study of five systems for fixation of the coracoid transfer during the Latarjet procedure for treatment of anterior recurrent shoulder instability

verfasst von: Valentin Massin, Damien Lami, Matthieu Ollivier, Martine Pithioux, Jean-Noël Argenson

Erschienen in: International Orthopaedics | Ausgabe 9/2020

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Abstract

Purpose

This work compares the biomechanical resistance of five modes of fixation coracoid bone-block fixation during Latarjet open-air or arthroscopic procedures. The hypothesis is that these systems are equivalent.

Methods

Latarjet procedures were performed on cadavers, then the samples were subjected to an increasing tension until the fixation failed. Five systems were tested: two malleolar screws, one screw with washer, two 3.5-mm self-compressive screws, one 4-mm self-compressive screw associated with one 3-mm self-compressive screw, and endobutton. The main judgment criterion was the strength necessary for the failure of the fixation. The secondary criterion was the stiffness of the assembly.

Results

The single malleolar screw fixing has a lower breaking threshold than other fixings. There is no difference in strength concerning the other systems. The average strength is greater than the stresses of a shoulder during daily life activities. There is no difference regarding the secondary criterion.

Conclusion

The use of a single screw is insufficient, but the other systems seems reliable. The use of small diameter self-compressive cannulated screws can provide a better result. This biomechanical work must be validated in clinical studies.
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Metadaten
Titel
Comparative biomechanical study of five systems for fixation of the coracoid transfer during the Latarjet procedure for treatment of anterior recurrent shoulder instability
verfasst von
Valentin Massin
Damien Lami
Matthieu Ollivier
Martine Pithioux
Jean-Noël Argenson
Publikationsdatum
12.05.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
International Orthopaedics / Ausgabe 9/2020
Print ISSN: 0341-2695
Elektronische ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-020-04565-2

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