Clavicular measurement: a new biometric parameter for fetal evaluation

Area of Science:

• Obstetrics and Gynecology
• Fetal Medicine
• Medical Imaging

Background:

• Accurate estimation of gestational age is crucial for optimal prenatal care.
• Congenital anomalies affecting the clavicle can impact fetal development and delivery.
• Identifying fetuses at risk for complications like shoulder dystocia is essential.

Purpose of the Study:

• To evaluate the correlation between fetal clavicular length and gestational age.
• To determine the utility of clavicular length in estimating fetal age.
• To explore the potential of clavicular measurements in detecting fetal abnormalities and delivery risks.

Main Methods:

• Sonographic measurement of fetal clavicular length in 85 fetuses.
• Gestational ages ranged from 15 to 40 weeks.
• Concurrent measurement of biparietal diameter (BPD) and femur length (FL).

Main Results:

• A strong linear correlation (coefficient = 0.81) was observed between clavicular length and gestational age.
• A simple relationship identified: gestational age (weeks) ≈ clavicular length (mm).
• Clavicular length proved a reliable parameter for gestational age estimation.

Conclusions:

• Fetal clavicular length is a valuable sonographic parameter for estimating gestational age.
• Clavicular measurements can aid in identifying fetuses with clavicular anomalies.
• This measurement may assist in detecting macrosomic fetuses at risk for shoulder dystocia or obstructed labor.