Cementless modular centroid reconstruction cup in young adults with congenital dysplasia of the hip.

The anatomic abnormalities associated with the dysplastic acetabulum make total hip arthroplasty a very complex and challenging procedure. Various techniques have been reported for the reconstruction of the dysplastic acetabulum. This prospective study examined the clinical results and technical challenges associated with acetabular reconstruction using a cementless modular centroid reconstruction cup in 62 dysplastic hips. The mean follow-up period was 62 +/- 9.2 months (range, 46-84 months). No patient was lost to follow-up. There were no revisions and no radiographic signs of osteolysis. There was a significant improvement in hip pain (P < .0001), mobility (P < .0001), and walking (P < .0001) according to D'Aubigne score. Midterm results have been favorable and patients have gained high clinical function. Longer-term follow-up is registered concerning wear and loosening.