30-years of experience with the cementless implanted Alloclassic total hip arthroplasty system—An ultra-long-term follow-up
Abstract Objective The aim of this study was to evaluate our long-term results with the ZweymUller hochgezogen and SL total hip arthroplasty system. This is the first study to provide a 30-year follow-up. Methods We reviewed 186 Alloclassic stem systems (ZweymUller hochgezogen (112) and SL (74), implanted in 179 patients from 1986 to 1987. Two different types of cementless acetabular components were used. 143 patients had died over the last 30years, so thirty out of 36 patients being still alive, with a mean follow-up of 29,48years (SD 0,51), were contacted by telephone and evaluated radiologically and clinically. Our loss-to-follow up was 16,7%. The mean age at follow-up was 83,57years (72,4–95,2; SD 6,77). Results If the endpoint is defined as the removal of the stem for aseptic loosening (3 cases), the overall survival rate is 98,38%. If the endpoint is revision for any reason (27 cases), the survival rate is 85,48%. Eleven patients needed an exchange of head and liner. The mean time from implantation until change of head and liner was 21,44years (SD 5,92). Most of the radiolucent lines and osteolytic zones were found in the proximal Gruen-zones 1 and 7 (69,7 and 21,2%). Conclusion After 30years of monitoring we can state that the evaluated system is very reliable in primary and secondary THA.
- 원문이 없습니다.
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기