Estudo duplo-cego randomizado da correlação entre radiografia simples e ressonância magnética na avaliação do ângulo crítico do ombro: Reprodutibilidade e curva de aprendizado*

José Carlos Garcia Júnior; Leandro Sossai Altoe; Rachel Felix Muffareg do Amaral; Andre Yui Aihara; Hilton Vargas Lutfi; Marcelo Boulos Dumans Mello

doi:10.1055/s-0040-1701288

Revista Brasileira de Ortopedia, Table of Contents

CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2021; 56(01): 078-082
DOI: 10.1055/s-0040-1701288

Artigo Original

Ombro e Cotovelo

Double-Blinded Randomized Study of the Correlation between Simple Radiography and Magnetic Resonance Imaging in the Evaluation of the Critical Shoulder Angle: Reproducibility and Learning Curve^[*]

Article in several languages: português | English

José Carlos Garcia Júnior

¹Instituto NAEON, São Paulo, SP, Brasil

,

Leandro Sossai Altoe

¹Instituto NAEON, São Paulo, SP, Brasil

,

Rachel Felix Muffareg do Amaral

²Diagnósticos da América S/A (Dasa), São Paulo, SP, Brasil

,

Andre Yui Aihara

²Diagnósticos da América S/A (Dasa), São Paulo, SP, Brasil

³Departamento de Radiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil

,

Hilton Vargas Lutfi

¹Instituto NAEON, São Paulo, SP, Brasil

,

Marcelo Boulos Dumans Mello

¹Instituto NAEON, São Paulo, SP, Brasil

› Author Affiliations

Abstract

Objective To evaluate the feasibility of magnetic resonance imaging (MRI) to obtain the critical shoulder angle (CSA) comparing the results obtained through radiography and MRI, and assess the learning curves.

Methods In total, 15 patients were evaluated in a blinded and randomized way. The CSA was measured and compared among groups and subgroups.

Results The mean angles measured through the radiographic images were of 34.61 ± 0.67 and the mean angles obtained through the MRI scans were of 33.85 ± 0.53 (p = 0.29). No significant differences have been found among the groups. The linear regression presented a progressive learning curve among the subgroups, from fellow in shoulder surgery to shoulder specialist and radiologist.

Conclusion There was no statistically significant difference in the X-rays and MRI assessments. The MRI seems to have its efficacy associated with more experienced evaluators. Data dispersion was smaller for the MRI data regardless of the experience of the evaluator.

Keywords

rotator cuff - shoulder joint - radiography - magnetic resonance imaging - reproducibility of results

Full Text

References

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Double-Blinded Randomized Study of the Correlation between Simple Radiography and Magnetic Resonance Imaging in the Evaluation of the Critical Shoulder Angle: Reproducibility and Learning Curve[*]

Double-Blinded Randomized Study of the Correlation between Simple Radiography and Magnetic Resonance Imaging in the Evaluation of the Critical Shoulder Angle: Reproducibility and Learning Curve^[*]