AML 인공물을 이용한 무시멘트 고관절 치환술의 장기 추시결과
Long-term Results of Total Hip Arthroplasty with an AML Hip Prosthesis
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AML 인공물을 이용한 무시멘트 고관절 치환술의 장기 추시 결과를 분석하였다. 대상 및 방법: 1989년 2월부터 1992년 2월까지 AML 인공관절 기기를 이용한 고관절 전치환 성형술을시행한 환자 중 최단 10년, 최장 13년 (평균 11년 2개월) 까지 추시가 가능하였던 34명, 40 고관절을대상으로 최종 추시 방사선 소견과 임상적 평가 기준을 분석하였다. 결과: Harris score 는 술 전 평균 52.4점에서 술 후 평균 88.3점으로 향상되었으며 대퇴골의 골용해는 8예(20.0%), 비구골의 골용해는 6예(15.0%)에서 관찰되었다. 응력 차단에 의한 골의 재흡수는 수술 후 3년에 22예(55.0%)에서 나타났으며, 수술 후 5년에 24예(60.0%), 수술 후 10년에는 25예(65.0%)로 장기 추시함에 큰 차이를 보이지 않았다. 대퇴스템의 재치환 수술은 없었으며, 1례에서 불안정성 고정된 비구컵을 재치환하였다. 폴리에틸렌 삽입물의 마모로 인한 라이너 치환 수술은 2예가 시행되었다. 결론: Anatomic Medullary Locking 인공물을 이용한 무시멘트 고관절 전치환술을 최소 10년 이상추시 관찰한 결과 임상적 및 방사선학적으로 양호하였으며, 응력차단에 의한 대퇴골 골흡수는 진행되지않았으나, 폴리에틸렌 마모와 골용해에 대한 장기적인 추시 관찰이 필요할 것으로 사료된다.
Abstract
P u r p o s e: The purpose of this study was to analyse the long-term results of cementless total hip arthroplasty using Anatomic Locking Medullary (AML) hip prosthesis. Materials and Methods: From February 1989 to February 1992, we reviewed the clinical and radiographic results of 34 patients (40 hips) who underwent cementless total hip replacement arthroplasty with AML prosthesis, and who were followed up for a minimum of 10 to 13 years. Results: The mean preoperative Harris hip score of 52.4 point improved postoperatively to a mean of 88.3 points. Osteolysis had occurred in 8 hips (20.0%) around the stem and in 6 hips (15.0%) around the cup. Stress mediated bone resorption was found in 55.0% at 3-year follow up, 60.0% at 5- year follow up, and 65.0% at 10-year follow up. One acetabular cup was revised for loosening and two hips were revised with polyethylene exchange for polyethylene wear. Conclusion: The long term results of total hip arthroplasty using AML prosthesis were acceptable and proximal bone resorption was not progressed. However, polyethylene wear and osteolysis should be followed carefully over the long term.
참고문헌 (19)
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