Fetal femur length and gestational age.
Ultrasound measurement of the fetal femur length during the second trimester is now possible and is a good indicator of fetal age, comparing favorably with measurement of fetal biparietal diameter. It is a simple technique and can be performed quickly. The prospect of the first fetal physical examination is fast becoming a reality, and this technique adds a new dimension.
D005260:Female; D005269:Femur / Q000196:embryology*; D005325:Fetal Organ Maturity; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography