Of a total of 21 cases,there were 10 bifida manifesta including 2 with secondary operation,9 spina bifida occulta and 2 no spinal bifida.

• 显性脊柱裂 10例 ,其中 2例曾做过脊膜膨出修补术 ; 隐性脊柱裂 9例 ,2例无脊柱裂。