[Structural Bone Grafting in THR with Cup for Dysplastic Hip.]

The authors present results of THR with cementless CLS cup and massive structural bone grafting for dysplastic hip in 42 patients at the average 7,3 years after surgery. They used an autogenous graft from the femoral head in all cases. Crowe type of dysplasia: group I. 14 patients, group II. 20, group III. 5 and group IV. 3 patients. Harris hips score has improved from 37 to 79 points.The cup was placed into anatomic hip centre in 14 patients. There was proximal position up to 15 mm from the hip centre in 27 patients and lateral position up to 10 mm from the hip centre in 18 patients. Osteointegration of the CLS cup has occured in all cases. Clinical survivorship was 100 percent. There was no definite or probable aseptic loosening of the cup. There was no revision. The average of the support of the cup by the structural graft was 30 percent. All grafts have healed to the iliac bone. There was bridging trabeculisation, remodelling and trabecular reorientation at the interface between the iliac bone and the graft. Key words: developmental dislocation of the hip, total endoprosthesis.