The humeral length (HL) is sometimes measured as an additional fetal biometric parameter in a second trimester ultrasound scan. It measurement can often compliment the femoral length especially in situations where there are short limb syndromes.
What is humerus in ultrasound scan?
A short humerus is defined as a measurement below the 2.5 percentile for gestational age and may be identified during a prenatal ultrasound assessment.
What is humerus in fetal biometry?
A shortened fetal humerus is a morphological description and is usually defined when the humeral length falls below the 5th percentile or less than 0.9 as predicted by the biparietal diameter (BPD). It can occur in isolation or in association with a number of other anomalies.
