시멘트형 대퇴 스템을 사용한 인공 고관절 재치환술의 결과
Results of Revision Hip Arthroplasty using Cemented Femoral Stem
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목적: 시멘트형 대퇴 스템을 이용한 인공 고관절 재치환술을 시행하여 임상적, 방사선학적 추시 결과를 분석하고자 하였다. 대상 및 방법: 1993년 2월부터 2004년 5월까지 시멘트형 대퇴부 재치환술 시행 후 평균 8.0년(2년~13년 3개월) 추시가 가능 했던 31명, 34예를 대상으로 하였다. 대퇴측의 골 결손은 AAOS분류상 segmental type이 14예로 가장 많았으며, Paprosky 분 류상 심한 골 결손을 보이는 type IIC 및 type III가 7예, 5예였다. 수술 직후 시멘트 맨틀은 Grade A, B가 26예, C, D가 8예였다. 결과: Kaplan-Meier 대퇴 스템 생존율은 8.0년에서 80.7%로 나타났다. 재-재치환술을 시행한 예는 5예로써 무균성 해리가 4 예 있었으며, 감염이 1예 발생하여 감염 치료 후 재수술로 완치되었다. 또한 재-재치환술을 시행한 5예 중 4예가 수술 직후 시 멘트 맨틀의 Barrack 분류상 C, D에 해당하여 시멘트 맨틀의 질이 나쁠수록 생존 가능성이 낮은 것으로 나타났다(P=0.0267). 결론: 시멘트형 스템을 이용한 대퇴부 재치환술의 결과는 우수하지는 않지만 숙련된 술기로 양호한 시멘트 맨틀을 형성한다면 무시멘트형 재치환술을 시행하기 힘든 경우 등에서 제한적으로 사용할 수 있을 것으로 생각된다.
Abstract
Purpose: To analyze clinical and radiological follow-up results of patients who underwent revision hip arthroplasty with a cemented stem. Materials and Methods: This study reviewed the records of 31 patients (34 hips), who underwent revision hip arthroplasty with a cemented stem between February, 1993 and May, 2004 after an average follow-up of eight years. There were 14 segmental type hips according to the femoral bone defect using the AAOS classification. According to the Paprosky classification, there were 7 and 5 type IIC and type III hips indicating a severe bone defect. Immediate postoperative cement mantle grades were grades A and B(26 hips) and grade C, D(8 hips). Results: The Kaplan Meier survival rate of the cemented stem was 80.7% at 8 years. Re-revision hip arthroplasty was performed in 5 hips, in whom aseptic loosening occurred 4 hips, and infection occurred 1 hip, which was cured by re-surgery. Immediately after the operation, 4 out of the 5 re-revision cases were classified as C & D in the Barrack classification of the cement mantle. Overall, an inadequate cement mantle led to a poorer survival rate. Conclusion: The results of revision hip arthroplasty using a cemented stem were not so good. However, the cemented stem might be used in cases considered unsuitable for a cementless stem if a good cement mantle could be achieved using a skillful cement technique.
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