Preoperative diagnoses were: painful aseptic loosening in 41 cups (25 cementless and 16 cemented acetabular components), 8 acetabular protusio with unipolar hemiprosthesis and two cronic infections. Acetabular bone deficiencies were classified as segmental in 19.6 %, cavitary in 37.3 % and combined in 43.1% according to the AAOS. Bone graft was used in 72.5 %. Clinical and radiographic results were rated according to the Johnston et al and Merle D’Aubigne scores.
The acetabular component was categorized as stable in 50 (98%), with two cases of migration in the first three months. Only one component was categorized as loose. No acetabular cup were removed or revised again. Radiolucent lines were maximum in zone 5: 5.9% (Include the migrated component). The most frequent complication was dislocation, which occurred in 3 hips (5.9%). Pelvic osteolysis was present in 5.9%.