For treatment, prenatal surgery is done to close a myelomeningocele, but this surgery can be dangerous to the developing fetus as well as the mother.

柱裂的治疗包括髓出型可行产前手术，但这种手术胎儿和母亲都是很危险的。

This one's the least common form of spina bifida, and because the spinal cord itself is not damaged, these individuals often do not experience the severe symptoms that are seen in myelomeningocele.

这是最少见的一种类型，由髓本身并无损伤，患者通常不会出现髓出型那样的严重症状。

Now a myelomeningocele is typically associated with a condition called an Arnold Chiari II malformation, which is where cerebellar and brainstem tissue slip down into the foramen magnum, the opening at the base of the skull.

髓出通常与小脑扁桃体下疝（Arnold–Chiari）畸形Ⅱ型有关，即小脑和脑干组织从颅腔底部的枕骨大孔疝出。