[The dwyer operation in the treatment of paralytic scoliosis with oblique pelvis].

Pelvic obliquity due to spinal deformity is a well defined syndrome. Its natural history is related to the evolution of the scoliosis. The authors describe two types of pelvic obliquity--total pelvic obliquity in which the sacrum is the lowest vertebra of the lumbar curve and subtotal pelvic obliquity in which there is some compensation between L5 and the sacrum. Seventeen patients were operated on. The Dwyer's procedure was found to be satisfactory in total pelvic obliquities from the point of view of correction and stabilization. In subtotal pelvic obliquity, an additional lumbosacral fusion by a posterior approach was found to be necessary.