中山醫學大學2021-09-132026-04-012021-09-132021-09-13https://scholars.csmu.edu.tw/handle/123456789/8676Femur length (FL) is one of the three key biometric parameters routinely measured via ultrasound during prenatal visits to determine fetal gestational age and growth. A short FL is generally defined as a value that is two standard deviations below the mean FL for a particular gestational age. The etiology of short FL includes skeletal dysplasias, aneuploidies, and intrauterine growth restriction. We present a case of a pregnant patient with isolated short FL of fetus on third trimester ultrasound exam.en-USarticle