Diagnostic accuracy of preoperative magnetic resonance imaging for detecting subscapularis tendon tears: a diagnostic test study
São Paulo med. j
;
138(4): 310-316, July-Aug. 2020. tab
Artigo
em Inglês
| LILACS, SES-SP
| ID: biblio-1139710
ABSTRACT
ABSTRACT BACKGROUND:
The accuracy of magnetic resonance imaging (MRI) for making the diagnosis of subscapularis tears presents wide variation in the literature and there are few prospective studies.OBJECTIVE:
To compare the findings from MRI and arthroscopy for diagnosing subscapularis tears. DESIGN ANDSETTING:
Diagnostic test study performed in a tertiary care hospital.METHODS:
We included patients who underwent arthroscopic rotator cuff repair and who had firstly undergone high magnetic field MRI without contrast. The images were independently evaluated by a shoulder surgeon and two musculoskeletal radiologists. Sensitivity, specificity, positive and negative predictive values, accuracy and inter and intra-observer agreement were calculated.RESULTS:
MRIs on 200 shoulders were evaluated. The incidence of subscapularis tears was 69.5% (41.5% partial and 28.0% full-thickness). The inter and intra-observer agreement was moderate for detection of subscapularis tears. The shoulder surgeon presented sensitivity of 51.1% to 59.0% and specificity of 91.7% to 94.4%. The radiologists showed sensitivity of 83.5% to 87.1% and specificity of 41% to 45.9%. Accuracy ranged from 60.5% to 73.0%.CONCLUSION:
The 1.5-T MRIs without contrast showed mean sensitivity of 70.2% and mean specificity of 61.9% for detection of subscapularis tears. Sensitivity was higher for the musculoskeletal radiologists, while specificity was higher for the shoulder surgeon. The mean accuracy was 67.6%, i.e. lower than that of rotator cuff tears overall.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Traumatismos dos Tendões
/
Imageamento por Ressonância Magnética
/
Manguito Rotador
/
Lesões do Manguito Rotador
Tipo de estudo:
Estudo diagnóstico
/
Estudos de avaliação
/
Estudo observacional
/
Estudo prognóstico
/
Fatores de risco
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
São Paulo med. j
Ano de publicação:
2020
Tipo de documento:
Artigo
Instituição/País de afiliação:
Universidade de Sao Paulo/BR
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