Limb Bones Chitty

Estimates the percentile of fetal humerus, radius, ulna, femur, tibia, fibula, or foot length for gestational weeks 12–42.

Measurement

Gestational age (weeks)

Length

Reference: Chitty & Altman. Charts of fetal size: limb bones. BJOG 2002; 109: 919–929, Tables 1–7.