Pelvic deformity in experimental dislocation of the growing hip.

The hip joints of growing rats have been dislocated experimentally to determine how this affects pelvic shape and acetabular orientation. After hip dislocation the innominate bone tilts laterally in the frontal plane. It bends anteriorly in the sagittal plane and rotates contralaterally in the coronal plane. No significant acetabular anteversion develops.