Abstract
Aim of the study: In the present retrospective report, the clinical and radiographic results of implantation of the Perfecta cementless T.H.R. were analyzed, in patients who were followed for a mean period of 6.9 years.
Material and methods: Between January 1993 – March 1998, 227 Perfecta T.H.R were performed in 214 patients. Five patients died and 14 patients were lost to follow-up, leaving 195 patients (208 T.H.R) available for the study. There were 50 men and 145 women with a mean age at operation of 65 years (27–83). The most common diagnosis was primary osteoarthritis (69%). The patients were assessed clinically using the HHS and radiographically for signs of loosening, polyethylene wear and osteolytic lesions.
Results: There were 14 intraoperative femoral fissures (6%) in the metaphyseal area. The mean HHS at the most recent follow-up was 90. Four patients (2%) had moderate thigh pain. Radiolucent lines around the porous coated part of the components were not observed, and progressive loss of proximal density was not seen. In the cup, a measured migration (> 3mm) in the plain films was not seen, while stem migration was noticed in 5 hips but the patients were asymptomatic. Fifteen cups (7%) had polyethylene wear and in 12 hips (6%) small osteolytic lesions were seen. Seven hips (3%) were revised: 2 hips for deep infection, 2 for acetabular loosening and 3 for instability.
Conclusions: Our clinical and radiographic medium – term results of Perfecta cementless T.H.R are very encouraging.
The abstracts were prepared by Eleni Koutsoukou. Correspondence should be addressed to him at the Hellenic Association of Orthopaedic Surgery and Traumatology (HAOST), 20, A. Fleming str, 15123 Marousi, Athens, Greece.
