Fetal femur length: a critical reevaluation of the relationship to menstrual age.
Obstet Gynecol
; 66(1): 69-75, 1985 Jul.
Article
en En
| MEDLINE
| ID: mdl-3892390
ABSTRACT
This investigation has reexamined the measurement of the femur length and the use of this measurement as a growth and dating parameter. Straight-line measurements of shaft length were found to be smaller than measurements made along the bone curvature. However, the maximum difference did not exceed 2 mm. Thus, because of its simplicity, use of straight-line measurements appears justified. The optimal (R2 = 96.1%) growth curve model was a linear-quadratic function, with variability around the regression line increasing with menstrual age. The optimal (R2 = 96.8%) dating curve model was a linear-quadratic function in which loge menstrual age is a function of femur length. The variability associated with age estimates increased with femur length. These data were used to construct new standard curves for growth assessment and dating of fetuses using femur length measurements.
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Banco de datos:
MEDLINE
Asunto principal:
Edad Gestacional
/
Fémur
/
Desarrollo Embrionario y Fetal
/
Menstruación
Tipo de estudio:
Diagnostic_studies
Límite:
Female
/
Humans
/
Pregnancy
Idioma:
En
Año:
1985
Tipo del documento:
Article