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International Orthopaedics

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01-01-2018 | Original Paper

Reproducibility of a new method for measuring lowering and medialisation of the humerus after reverse shoulder arthroplasty

Authors: Axel Marcoin, Antoine Ferrier, Laurent Blasco, Paul De Boissieu, Cécile Nerot, Xavier Ohl

Published in: International Orthopaedics | Issue 1/2018

Abstract

Background

Reverse shoulder arthroplasty (RSA) requires lowering the humerus and medialisation of the centre of rotation. Several techniques based on standard X-rays are available in the literature. The aim of this study was to expose and validate a new technique for measuring these parameters.

Materials and methods

Radiographic data of 20 patients were included. Three observers examined each X-rays three times to establish the inter- and intra-reproducibility of each technique (Jobin, Renaud and our method).

Results

Intra-observer reproducibility was between 0.10 and 0.94. The best intra-observer intraclass correlation coefficient (ICC) was obtained using Renaud’s and our techniques. The inter-observer reproducibility was between 0.37 and 0.74. The best inter-observer ICC was obtained with our technique.

Discussion

We describe a reliable and reproducible method to evaluate lowering and medialisation of the humerus after RSA. This technique may allow determine the optimal threshold of lengthening after RSA.

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Title: Reproducibility of a new method for measuring lowering and medialisation of the humerus after reverse shoulder arthroplasty
Authors: Axel Marcoin
Antoine Ferrier
Laurent Blasco
Paul De Boissieu
Cécile Nerot
Xavier Ohl
Publication date: 01-01-2018
Publisher: Springer Berlin Heidelberg
Published in: International Orthopaedics / Issue 1/2018
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-017-3510-6

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Reproducibility of a new method for measuring lowering and medialisation of the humerus after reverse shoulder arthroplasty

Abstract

Background

Materials and methods

Results

Discussion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Materials and methods

Results

Discussion

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