Abstract
Aims: To evaluate the outcomes of the primary total hip arthroplasties using nonmodular cementless acetabular component with titanium mesh coating þxed by press-þt technique. Methods: Eighty-two primary total hip arthroplasties in 75 patients were performed consecutively. Sixty-two hips were eligible for follow up of average 62 months (range, 48–84). The mean age was 59 years. The clinical evaluation was done by modiþed Harris hip score (HHS) and radiologic evaluation including stability of component, polyethylene wear rate (Dorr method) and remodeling pattern was done. Results: Mean HHS improved from 50.2 points preoperatively to 90.5 points at the last follow up. Excellent or good results were found in 52 hips (84%). All components were stable radiologically. The average thickness of polyethylene was 13.06mm. The linear polyethylene wear rate was 0.073mm/years (range, 0.01–0.23). Wear rate was correlated with the thickness of polyethylene signiþcantly (p=0.049). Any pelvic osteolysis was not found. The polar gap was found in 25 hips (40%) at initial radiographs and has disappeared during follow up in 22 hips (88%). One hip was revised due to chronic unreduced dislocation. There were 9 heterotrophic ossiþcations, 6 nonrecurrent dislocations, and 2 transient sciatic nerve palsies. Conclusion: Total hip arthroplasty using nonmodular cementless acetabular component seemed to enhance satisfactory early mid-term result in terms of stability and acetabular remodeling with minimal wear and pelvic osteolysis.
Theses abstracts were prepared by Professor Dr. Frantz Langlais. Correspondence should be addressed to him at EFORT Central Office, Freihofstrasse 22, CH-8700 Küsnacht, Switzerland.
