A common congenital midline defect of fusion of the vertebral arch without protrusion of the spinal cord or meninges. The lesion is also covered by skin. L5 and S1 are the most common vertebrae involved. The condition may be associated with an overlying area of hyperpigmented skin, a dermal sinus, or an abnormal patch of hair. The majority of individuals with this malformation are asymptomatic although there is an increased incidence of tethered cord syndrome and lumbar SPONDYLOSIS. (From Joynt, Clinical Neurology, 1992, Ch55, p34)

DUI

D016136 MeSH Browser

CUI

M0024645

Previous indexing

Spinal Dysraphism (1966-1977)

History note

1991; was SPINA BIFIDA 1978-1990; for DERMAL SINUS use NEURAL TUBE DEFECTS 1979-1990

Public note

1991; was SPINA BIFIDA 1978-1990; for DERMAL SINUS see NEURAL TUBE DEFECTS 1979-1990