Magnetic resonance imaging of the medial rectus muscle of patients with consecutive exotropia after medial rectus muscle recession.
Ophthalmology
; 117(10): 1876-82, 2010 Oct.
Article
em En
| MEDLINE
| ID: mdl-20541264
ABSTRACT
PURPOSE:
To investigate the morphologic characteristics of the medial rectus muscle in patients with consecutive exotropia.DESIGN:
Retrospective, nonrandomized, interventional study. PARTICIPANTS AND CONTROLS Eleven eyes of 10 patients with consecutive exotropia were studied. Thirteen eyes of 13 age-matched normal subjects were studied as controls.METHODS:
All of the patients underwent an advancement of a previously operated medial rectus muscle. Patients were divided into 3 groups based on the insertion of the medial rectus muscle Normally recessed stretched scar, and slipped muscle. MAIN OUTCOMEMEASURES:
A comparison was made of the clinical findings, intraoperative findings, and distance from the limbus to the medial rectus muscle measured on magnetic resonance images among the groups.RESULTS:
The medial rectus of 4 eyes of 3 patients had normally recessed insertions and 7 eyes had abnormal insertions (3 stretched scars, 4 slipped muscles). The clinical findings were not different among the 3 groups. The magnetic resonance images showed that the medial rectus muscle was located closest to the limbus in the control subjects and most distant in the patients with a slipped muscle (P<0.005). The clinical findings in the patients with a stretched scar and with normally recessed were indistinguishable.CONCLUSIONS:
Magnetic resonance images of the medial rectus muscles of the control subjects and operated groups are significantly different morphologically. A slipped medial rectus muscle has characteristic magnetic resonance findings that are distinguishable from the muscle with normally recessed and stretched scar.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Procedimentos Cirúrgicos Oftalmológicos
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Imageamento por Ressonância Magnética
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Exotropia
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Músculos Oculomotores
Tipo de estudo:
Observational_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Ophthalmology
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Japão