선상고정 및 금속 나사못고정을 시행한 무시멘트 비구부품의 임상적 연구 = Uncemented Acetabular Components with Line to Line Fit and Multiple Screw Fixation

다국어 초록 (Multilingual Abstract)

Authors reviewed 85 primary total hip arthroplasties in which a Harris-Galante porous coated acetabular component had been used with minimum 2 years follow up (average 50 months) to identify the radiographic and clinical results. The results were followings. 1. With insertion of uncemented acetabular component with line to line technique, initial gaps were existed in 44 of 85 cases (51.8%) and present predominant in zone 1. 2. Incidence of radiolucent line in cases without initial gap was lower than that initial gap, but which was not statistically significant. 3. Incidence of progressive radiolucent line in cases without initial gap was significantly lower than that with initial gap. 4. Mean liner wear rate was 0.31 +-0.14mm/year 5. 2 cases of pelvic osteolysis and 1 case of aseptic loosening were developed, and 2 cases of revisions were performed because of recurrent dislocation and dislodgement of polyethylene liner. 6. Final radiographic results according to Glassman and Engh's criteria in cases without initial gap were better than those with initial gap. Conclusively, radiographic results without initial gap between uncemented acetabular component and bone were significantly better than those with initial gap, especially in terms of the incidence of progressive radiolucent line. So, it is necessary to improve surgical technique to eliminate or reduce initial peripheral gap around socket, and press fit might be one of the good answer.