According to physical finding and MRI examination, they were categorized into spina bifida cystica( n =13), spina bifida occulta( n =7) and repair of meningomyelocele( n =13).

• 根据临床表现和MRI检查，显性脊柱裂13例，隐性脊柱裂7 例，有脊膜膨出手术史13 例。