What causes fetal malposition?

The causes of abnormal fetal position are diverse, mainly including the following points: 1. Polyhydramnios: When a pregnant woman has excessive amniotic fluid, the fetus has increased mobility within the uterine cavity, making the fetal position unstable and increasing the likelihood of abnormal fetal position. 2. Abnormal uterine shape: Uterine developmental defects or abnormalities (such as unicornuate uterus, bicornuate uterus, septate uterus, etc.) can restrict the normal movement space of the fetus within the uterus, leading to abnormal fetal position. 3. Pelvic abnormalities: Pelvic narrowing or abnormal pelvic shape can affect the descent of the fetal head, preventing it from entering the pelvis smoothly, thereby resulting in abnormal fetal position. 4. Fetal factors: Inherent fetal issues, such as fetal macrosomia, growth restriction, or congenital malformations, may all affect the normal formation of fetal position. 5. Multiple pregnancies: In multiple pregnancies, due to limited space within the uterus, the fetuses may assume abnormal positions. Pregnant women should undergo regular prenatal examinations during pregnancy to promptly identify and manage factors that may lead to abnormal fetal position.