[Congenital luxation of the hip in a newborn infant after tubal pregnancy (feto-salpynx). Plea for the postural theory of luxation].

The authors report a case of an infant born after a 37-week intra-tubal pregnancy (foeto-salpinx). There were several orthopaedic complications due to malposition: torticollis which will be treated by sternomastoid tenotomy at the age of three, pes valgus with metatarsus varus and congenital dislocation of the right hip. Conservative treatment proved inadequate and required treatment by pelvic osteotomy to correct a severe acetabular dysplasia. A review of the literature reveals that tubal pregnancies resulting in the birth of a mature and living new born are exceptional. From the mechanical point of view, the authors consider that, in this case, two factors combined to produce a congenital dislocation of the hip--excessive pressure exerted on the foetus by the tubal wall and an abnormal position of the foetus favouring the dislocation. The reasons for the ineffectiveness of conservative treatment to correct the severe acetabular dysplasia are discussed.