Introduction: Myelomeningocele (MMC) is an embryonic malformation that occurs in the first four weeks of gestation due to a failure in the closure of the neural tube. They have multifactorial etiology such as genetic and environmental factors that affect folic acid metabolism. Several anomalies may be associated with MMC, with the occurrence of hydrocephalus and Arnold Chiari type II malformation being most present. Surgical repair should ideally occur within the first 24 hours after birth to prevent or decrease the risk of infection, preservation of all viable nerve tissue, anatomical reconstitution. However, surgical repair of MMC intrauterine has shown substantial benefit in all babies submitted to this intervention. Objective: To compare the functional performance of children with MMC who underwent intrauterine surgical repair and those who did traditional surgery at birth. Methods: Cross-sectional study carried out at the UCB School-Clinic, where children treated with MMC were evaluated, analyzing their motor status and functional performance using the Pediatric Evaluation of Disability Inventory (PEDI) for a quantitative record of functional capacity and autonomy in daily activities, in the areas of self-care, mobility and social function. Results: There was a statistically significant relevance on the mobility function (p=0.01) for children who underwent intrauterine repair when compared to children who underwent traditional surgery. Conclusion: There is a strong relationship of better functionality of children who underwent intrauterine surgery when compared to children who underwent traditional surgery.