Why Does Pelvic Deformity Occur in Experimental Dislocation of the Growing Hip?

A three-dimensional pelvic deformity was observed when experimental dislocation of the hip was reproduced in Wistar rats using hormonal and biomechanical factors. Resection or surgical dislocation of the femoral head created its absence in the acetabular socket without pelvic deformity. Muscular contractures were observed in all animals. We conclude that progressive displacement of the femoral head could produce pelvic deformity and simultaneous alterations in the triradiate cartilage.