Myelomeningocele is the most common type of spina bifida. It is characterized by protrusion of the spinal cord components (including nerves) outside the body and is usually accompanied by the more severe complications associated with spina bifida (i.e., paralysis, brain defects, hydrocephalus, reduced bladder and bowel control).

• Meningocele is the least common type (about 10% of all cases). In these cases, only the spinal meninges (membrane that covers and protects the spine) protrude outside the body. This condition is usually corrected by surgery with little effect on the spinal nerves.

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