Long Bone Ratio

The bones of the upper and lower limbs are considered long bones such as the tibia, fibula, femur, radius, ulna, humerus, metacarpals, metatarsals, phalanges, and clavicles. The measurement or the ratio of these limb bones in a fetus are used in dating the pregnancy and detecting the growth of the fetus and its anatomy. The femur length is used in regular pregnancy scans to diagnose any fetal anomaly if present through ultrasonography. Long bone ratios can reveal any fetal skeletal dysplasia.

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Does my ultrasound report show any skeletal abnormality?

Query: Hi doctor, Please comment on my ultrasound report. Single fetus in cephalic presentation. Placenta: anterior Gr-1 and amniotic fluid is adequate (AFI-16.4). Fetal measurements are as follows: BPD 80 mm, HC 306 mm, AC 280 mm and FL 58 mm, RT - humerus 52 mm, radius 45 mm, ulna 50 mm, tibia 50 mm and ...  Read Full »


Dr. Sameer Kumar

Answer: Hello, Welcome to icliniq.com. This is a normal third trimester fetal growth parameter ultrasound report. Biophysical profile is normal. Weight is corresponding to the age of gestation and presentation is cephalic with head down towards pelvis, which is normal. So, you need not worry. Baby's growth ...  Read Full »

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