Magnetic resonance imaging to assess vascularity of scaphoid nonunions.
J Hand Surg Am
; 16(3): 479-84, 1991 May.
Article
em En
| MEDLINE
| ID: mdl-1861031
ABSTRACT
The unreliability of current methods of assessing of bone vascularity is well documented, precluding any prospective analysis of its influence on bone healing. In hopes of accurately predicting scaphoid vascularity, magnetic resonance imaging was used prospectively in patients with radiographic evidence of nonunion. Magnetic resonance imaging scans were compared to plain radiographs, tomograms, and the operative impressions of the surgeon. The diagnostic accuracy of each test was determined by a pathologist's interpretation of histological sections. Ten of thirteen surgical specimens were available for analysis. The magnetic resonance imaging scan accurately predicted scaphoid viability in all ten cases (three viable, seven avascular). This compared with diagnostic errors in six of ten plain radiographs, one of seven tomographs, and two of ten surgical assessments. Magnetic resonance imaging can accurately predict the vascularity of the ununited scaphoid. With further follow-up of these patients, the capability of the avascular scaphoid to heal will become evident. Definitive preoperative determination of the healing potential of scaphoid nonunions may then be possible, thereby aiding the surgeon's choice of the appropriate surgical procedure.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Ossos do Carpo
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Fraturas não Consolidadas
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
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Observational_studies
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Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
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Humans
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Male
Idioma:
En
Revista:
J Hand Surg Am
Ano de publicação:
1991
Tipo de documento:
Article