Critical Shoulder Angle Assessment in Radiographies and Magnetic Resonance Imaging (MRI): Measurement of Intra and Inter-Observer Agreement

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Published Apr 29, 2022
DOI: https://doi.org/10.18103/mra.v10i4.2750

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Main Article Content

José Carlos Souza Vilela, MD, PHD
Unimed BH hospital; Mater dei Hospital
Anna Luiza Amancio Vidal
Unimed BH hospital
Mabelly Andrade Correa
Unimed BH hospital
Luciene Mota de Andrade
ECOAR Diagnosis clinic
Paulo Henrique Sampaio Ribeiro
Unimed BH hospital
Bruno Biller Teixeira Fernandes de Araúj
ECOAR Diagnosis clinic
Tadeu Fonseca Barbosa
Unimed BH hospital: IPSEMG
Thalles Leandro Abreu Machado
Unimed BH hospital: IPSEMG

Abstract

Objective: to evaluate the critical shoulder angle by comparing the results of measurements performed by radiography and magnetic resonance imaging, considering the intra and interobserver perspectives.


Methods: we evaluated radiographic and magnetic resonance images of 74 shoulders (71 patients) submitted to these exams between 2017 and 2020, regardless of the acquired pathology. We ran a statistical analysis comparing the mean values of the data obtained by the student's t-test, and the analysis of intra and interobserver agreement used the Interclass Correlation Coefficient (ICC), with bidirectional mixed models and a confidence interval of 95%.


Results: the patients had a mean age of 51.7 years, with a predominance of men (51.9%) and the most affected shoulder was the right-sided one (57.9%). There were no significant differences between the measurements made by radiography and those by magnetic resonance, both by intra and interobserver views, and the ICC showed a satisfactory level of agreement in relation to these aspects. Conclusion: there was an excellent degree of agreement between the examiners, in all the situations compared (intra and interobserver, radiography and MRI), considering the two periods of analysis.

Keywords: Critical Shoulder Angle, X-ray, Magnetic Resonance Imaging

Article Details

How to Cite
SOUZA VILELA, José Carlos et al. Critical Shoulder Angle Assessment in Radiographies and Magnetic Resonance Imaging (MRI): Measurement of Intra and Inter-Observer Agreement. Medical Research Archives, [S.l.], v. 10, n. 4, apr. 2022. ISSN 2375-1924. Available at: <https://esmed.org/MRA/mra/article/view/2750>. Date accessed: 05 nov. 2024. doi: https://doi.org/10.18103/mra.v10i4.2750.
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Issue
Vol 10 No 4 (2022): Vol.10 Issue 4 April 2022
Section
Research Articles

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