[Development in conservatively treated scoliosis in patients with myelomeningocele (patients of the years 1964-1977)].

The advances in urological and neurosurgical management in myelomeningocoele patients have led to an increased survival rate. The extremely complex spinal deformity presents a major treatment challenge. Clinical and radiological evolution of scoliosis treated conservatively for at least 10 years was studied. Eighty-nine myelomeningocoele patients born between 1964 and 1977 were reviewed. Thirty-one (35%) were noted to have scoliosis (10 congenital type, 21 developmental type). All congenital forms showed rapid progression despite brace treatment, often to curvatures in excess of 100 degrees. Among the developmental type, curves detected prior to 10 years (10 cases before 5 years, 6 cases between 6 and 10 years) were rapidly progressive beyond 70 degrees. Curves detected after 10 years (5 patients) never exceeded 30 degrees. Because of this natural history, conservative treatment should be limited to developmental forms less than 50 degrees. Spinal stabilization is indicated in all curvatures over 50 degrees without awaiting adulthood.