Short fetal long bone in upper arm length; Short foetal humerus length; Short foetal long bone in upper arm length
Definition:
A short humerus length is defined as a length below the 2.5th percentile for gestational age or as a measurement less than 0.9 of that predicted by the measured biparietal diameter. The humerus should be measured with the bone perpendicular to the ultrasound beam and with epiphyseal cartilages visible but not included in the measurement (PMID:16100637).