Evaluation of the adequacy of Hadlock's reference chart for identification of fetuses with growth restriction.

Objective: This study aimed to verify whether Hadlock's reference values for fetal weight identify fetuses below the 10th percentile in our population correctly.

Methods: The fitness of the Hadlock reference range to our study population was tested by assessment of Z scores. We evaluated differences between the reference weight ranges proposed in our study and those recommended by Hadlock.

Evaluation of the adequacy of reference charts for the accurate identification of fetuses with bone length below the 5th percentile.

Aim: To identify reference charts for femoral and humeral lengths enabling appropriate identification of fetuses <5th percentile in one population.

Methods: Two samples of fetuses aged 14-40 weeks were selected from our institution's ultrasonographic database. Regression analysis was used to construct reference charts of femoral and humeral lengths based on the local population (n=901).

Association of midtrimester short femur and short humerus with fetal growth restriction.

Objective: To investigate the association between the midtrimester presence of short femur and short humerus and intrauterine growth restriction.

Methods: This retrospective study included ultrasound examinations of 1043 fetuses. Fetuses with normal-length bones were compared with fetuses that had femoral or humeral lengths below the 5(th) percentile for gestational age by Student's t-test and the chi-squared test.