Sonographic evaluation of the distal femoral epiphyseal ossification center.
Two hundred and twenty fetuses more than 29 weeks of gestational age were examined for the presence of the ossification center of the distal femoral epiphysis. One hundred and three fetuses did not demonstrate any ossification. There were 44 fetuses than demonstrated a small slit-like ossification center, at a mean age of 33.6 weeks, and 73 that demonstrated a large globular epiphyseal center, at a mean age of 35.4 weeks. There is good correlation of the ultrasonic appearance of the ossification center of the distal femoral epiphysis with the radiographic appearance.
D004838:Epiphyses / Q000196:embryology*; D005260:Female; D005269:Femur / Q000196:embryology*; D005865:Gestational Age; D006801:Humans; D010012:Osteogenesis; D011247:Pregnancy; D014463:Ultrasonography