A comparison of the fetal femur length and biparietal diameter in predicting gestational age in the third trimester.
Using 2 published normograms relating ultrasonic fetal femur length and gestational age, the accuracy of predicting gestational age using fetal femur length was compared to that using the biparietal diameter after 28 weeks' gestation in 50 patients. The results showed that ultrasonic fetal femur length was more accurate than the biparietal diameter in predicting gestational age in the third trimester. Ultrasonic fetal femur length provides an additional parameter in assessing gestational age in late pregnancy.
D005260:Female; D005269:Femur / Q000033:anatomy & histology / Q000196:embryology*; D005333:Fetus / Q000033:anatomy & histology*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D014465:Ultrasonics