Cite this page: Ziadie MS. Torsion / hypercoiling. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/placentatorsion.html. Accessed December 8th, 2021.
Definition / general
- Normal umbilical cord has approximately 1 coil per 5 cm
- Number of coils is related to fetal movement
- Torsion / hypercoiling (> 2 coils per 5 cm) is associated with extremely long cords, twin gestation and cocaine; has increased risk of fetal growth restriction or death
- Associated with fibrosis and loss of Wharton jelly (Arch Pathol Lab Med 2000;124:1352)