[Can simple pelvic osteotomy using the Chiari or Salter technic result in labor complications?]

The simple pelvic osteotomy in the techniques of Chiari and Salter respectively has become a frequently performed operation on the hip joint to improve the acetabulum in congenital hip dysplasia. Both techniques were simulated in a macerated, normally developed, natural female pelvis. Various parameters which indicate the deformation of the pelvis were measured. The results lead to the conclusion that both operations - especially when bilaterally performed - can cause changes of the birth canal which may prevent spontaneous labour.