Abstract

The present study was performed to provide a normal reference range for humerus diaphysis length at the second trimester of pregnancy in an Indian population. This cross-sectional study was performed on 25 radiographs of aborted normal human fetuses of gestational age (GA) between 13th and 28th weeks. The radiographs were used to measure the maximum length of the humerus using a vernier calliper. Data were collected, tabulated, and statistically analyzed. The mean diaphyseal length of humerus at the fourth lunar month was 22.18 ± 6.59 mm, and at the seventh lunar month, it was 41.39 ± 10.08 mm. Simple linear regression analysis shows a strongly significant linear relationship of humerus length with GA, biparietal diameter, head circumference, and abdomen circumference. We have provided a normal reference range for humerus diaphysis length at the second trimester of pregnancy in an Indian population.

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