The acetabular component of dysplastic osteoarthritic hips after congenital dislocation

A total of 71 (25-110) months after primary total hip replacement, 17 patie nts with high congenital hip dislocation and false iliac acetabulum were cl inically and radiologically assessed. Twenty-one threaded cups were placed, 16 at the site of the true acetabulum, one at the site of the acetabular r im and four at the site of the false acetabulum. The Harris hip score incre ased from 37.1 (20.2-55.5) points preoperatively to 84.7 (67.4-97.7) points postoperatively. Radiologically there were no signs of cup migration. It c an be concluded that even complicated dysplastic hips can be treated succes sfully by total hip replacement, without prior ileo-femoral distraction or additional acetabular augmentation.