What are the causes of fetal malposition? Fetal malposition refers to the abnormal position of the fetus in the uterus, including incorrect head position, incorrect breech presentation, incorrect transverse position, etc. There are many reasons for malposition of the fetus, including the following. Maternal factors: On the one hand, maternal pelvic malformations, congenital uterine development abnormalities, uterine fibroids, pelvic inflammation and other pathological factors may affect the position of the fetus in the uterus. For example, endometrial fibroids can cause deformation of the uterine cavity and cause abnormal fetal head position; for example, pelvic inflammation can cause adhesions between the uterus and appendages, preventing the fetus from moving freely, and may cause various fetal positions.