Fluid-fluid levels in injured knees: do they always represent lipohemarthrosis?
Radiology
; 198(2): 499-502, 1996 Feb.
Article
en En
| MEDLINE
| ID: mdl-8596856
ABSTRACT
PURPOSE:
To determine if fluid-fluid levels on horizontal-beam radiographs of posttraumatic knee joints always represent lipohemarthrosis. MATERIALS ANDMETHODS:
The files of 41 patients with tibial plateau fracture were reviewed retrospectively. Twelve with fluid-fluid levels on radiographs who underwent computed tomography (CT) or magnetic resonance (MR) imaging were selected; CT attenuation and MR signal intensity patterns were used to assess fluid-fluid levels. Simulated hemarthrosis and lipohemarthrosis underwent plain radiography, CT, and MR imaging.RESULTS:
Eight patients showed no evidence of fat in the supernatant fluid with either CT (n = 7) or CT and MR imaging (n = 1). Fluid levels resulted from blood separating into cellular elements and supernatant serum. Four patients showed evidence of lipohemarthrosis with either CT (n = 3) or MR imaging (n = 1); in one of these patients, a double fluid-fluid level could be demonstrated retrospectively on plain radiographs.CONCLUSION:
Single fluid-fluid levels in posttraumatic knee joints do not necessarily represent a lipohemarthrosis. Double fluid-fluid levels are a more specific finding.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fracturas de la Tibia
/
Hemartrosis
/
Traumatismos de la Rodilla
/
Articulación de la Rodilla
/
Lípidos
Tipo de estudio:
Observational_studies
Límite:
Humans
Idioma:
En
Revista:
Radiology
Año:
1996
Tipo del documento:
Article
País de afiliación:
Estados Unidos