Evaluation of ulnar variance on wrist MR imaging: is it a reliable measure?
Skeletal Radiol
; 49(5): 723-730, 2020 May.
Article
en En
| MEDLINE
| ID: mdl-31807873
ABSTRACT
OBJECTIVE:
To determine if ulnar variance can be evaluated by magnetic resonance (MR) imaging and if this measure can be used as a reliable indicator when correlated to the gold standard technique, conventional radiography (CR). MATERIALS ANDMETHODS:
From January to July 2018, the MR images of 64 participants, comprising 66 wrists (mean age 34.9 years; 33 females; 31 males), were obtained. Among those, 29 were referred for evaluation of the wrist for different medical reasons and 35 were asymptomatic volunteers from our radiology group. All subjects had a plain radiography of the wrist in a posteroanterior view with a mean interval between images of 1 day. Local ethics committee approved the study and written informed consent was obtained from all patients. Two musculoskeletal radiologists evaluated the images. Correlation coefficients and a linear regression model were used for statistical analyses.RESULTS:
Intra- and inter-observer analyses were performed for both diagnostic methods with results showing concordance (intra-observer kappa score MR 0.915/CR 0.931; p < 0.05; inter-observer kappa score MR 0.857/CR 0.931; p < 0.05). The intraclass correlations of MR and CR to evaluate agreement between the radiologists was slightly higher for radiologist #1 (0.771) than for radiologist #2 (0.659). A linear regression model showed good model fit indicating that MR does correlate with the ulnar variance as measured by CR (CR = 0.554 + 0.897 × MR, R2 = 0.665).CONCLUSION:
Although CR is the gold standard method for the evaluation of ulnar variance, our study demonstrated that MR can be used as a reliable qualitative option.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cúbito
/
Muñeca
/
Pesos y Medidas Corporales
/
Imagen por Resonancia Magnética
Tipo de estudio:
Prognostic_studies
/
Qualitative_research
Límite:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Skeletal Radiol
Año:
2020
Tipo del documento:
Article
País de afiliación:
Brasil