Myelomeningocele is a congenital defect where the vertebral arches fail to close, resulting in a sac extending from the spinal column containing neural tissue and cerebrospinal fluid. It occurs in approximately 1-2 per 1000 live births. Risk factors include low maternal folic acid, certain genetic factors, and exposure to environmental toxins. Clinical features depend on the level of spinal cord involvement and may include paralysis, bladder and bowel dysfunction. Diagnosis is typically made via prenatal ultrasound or MRI. Treatment involves surgical repair shortly after birth to prevent further neurological damage and lifelong multidisciplinary management. Prevention focuses on women consuming adequate folic acid before and during early pregnancy.