open spinal dysraphism

In 187 fetuses with open spinal dysraphism, prenatal motor level was more caudal than the anatomical level in 85% of cases, with larger gaps in myeloschisis and higher lesions.

Prenatal ultrasound in open spinal dysraphism often underestimates functional level: in 85% of fetuses, motor level was more caudal than anatomy. Lesion type and height influenced the gap, with implications for counseling and fetal care planning.