Pseudoradial Tear of the Medial Meniscus: A Relatively Common Potential Pitfall
Journal of the Korean Society of Magnetic Resonance in Medicine
;
: 219-224, 2014.
Artigo
em Inglês
| WPRIM
| ID: wpr-23918
ABSTRACT
PURPOSE:
To determine the incidence of truncated triangle appearance of anterior horn (AH) to body of medial meniscus (MM) and determine its clinical significance. MATERIALS ANDMETHODS:
IRB approval was obtained, and informed consent waived for this study. The criteria of "pseudoradial tear" was truncated triangle appearance of the tip of AH to body of MM on one or more coronal images with adjacent fluid signal intensity at the blunted tip. Two musculoskeletal radiologists retrospectively evaluated 485 knee MR images independently for the presence and number of sections with "pseudoradial tear" of AH to body of MM using proton density-weighted coronal MR images. Inter-and intraobserver agreement was calculated using kappa coefficients. Medical records were reviewed for arthroscopic correlation.RESULTS:
A pseudoradial tear in the AH to body of MM was present in 381 (78.6%) patients. Locations were 112 in AH (29.4%), 143 in AH to body (37.5%), and 126 in body (33.1%). Number of consecutive sections of pseudoradial tear were 1 in 100 (26.2%), 2 in 164 (43.0%), 3 in 94 (24.7%), 4 in 21 (5.5%), and 5 in 2 (0.5%). Interobserver agreement was 0.99 for presence and 0.43 for number of sections of pseudoradial tear. Arthroscopies were performed in 96 patients and none of the pseudoradial tears were proven as true radial tears on arthroscopy.CONCLUSION:
Pseudoradial tears are frequently seen in AH to body of MM on coronal MR images and may be another pitfall that a radiologist needs to be aware of and be able to differentiate from true radial tear.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Artroscopia
/
Prótons
/
Lágrimas
/
Meniscos Tibiais
/
Imageamento por Ressonância Magnética
/
Prontuários Médicos
/
Incidência
/
Estudos Retrospectivos
/
Comitês de Ética em Pesquisa
/
Cornos
Tipo de estudo:
Estudo de incidência
/
Estudo observacional
/
Estudo prognóstico
Limite:
Animais
/
Humanos
Idioma:
Inglês
Revista:
Journal of the Korean Society of Magnetic Resonance in Medicine
Ano de publicação:
2014
Tipo de documento:
Artigo
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