Comparative accuracy of mid-thigh soft tissue thickness and the hadlock formula in fetal weight estimation during the third trimester: A prospective cross-sectional study

Key Points

• Fetal weight estimation during the third trimester is more accurate when using mid-thigh soft tissue thickness than the Hadlock formula.
• The study measured fetal weights with an accuracy of 90% using soft tissue thickness compared to 76% for the Hadlock formula.
• In this prospective cross-sectional study, ultrasound measurements were taken at various hospital locations to assess accuracy.
• These findings highlight the need for refined techniques in fetal weight estimation to improve clinical outcomes during pregnancy.