Collarless Polished Tapered 대퇴 주대를 이용한 인공고관절 치환술 -최소 2년 이상 추시 결과-
Hip Arthroplasty Using Collarless Polished Tapered Stem -Minimum 2 Years Follow-up Results-
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초록
CPT 대퇴 주대를 이용한 인공 고관절 전치환술 및 양극성 고관절 반치환술의 최소 2년 이상 임상적 결과와 방사선학적 결과에 대해 알아보고자 하였다. 대상 및 방법: 2006년 10월부터 2009년 4월까지 CPT 대퇴 주대를 이용하여 인공 고관절 치환술을 시행한 환자 중 2년 이상 추시 관찰한 33예를 대상으로 하였다. 33명의 환자 중 남자는 6명, 여자는 27명이었으며 수술 시 평균 연령은 74세였다. 평균 추시 기간은 33개월(24-48개월)이었고 임상적 결과는 HHS을 이용하여 평가하였고 방사선학적 평가에 있어서는 시멘트 등급과 대퇴주대 수직 침강 및 근위 대퇴골 골 흡수를 평가하였다. 결과: 임상적인 평가에서 HHS는 수술 전 평균 55점에서 수술 후 평균 91점으로 향상 되었으며 방사선학적 평가에서 시멘트 등급은 A등급은 14예, B등급은 14예, C1등급은 5예였다. 근위 대퇴골 골 흡수 평가에서 1등급은 22예, 2등급은 1예였다. 수직 침강 소견은 평균 0.51 mm로 전 예에서 의미 있는 수직 침강 소견은 보이지 않았다. 이소성 골화 현상은 총 13예에서 관찰되었다. 결론: CPT 대퇴 주대는 2년 이상 추시에서 임상적인 결과 및 방사선학적 평가에서 만족스러운 결과를 보였다. 하지만 좀 더 정확한 결과를 위해 장기간의 추시가 필요할 것으로 사료된다.
Abstract
This study evaluated the clinical and radiologic results of total hip arthroplasty and bipolar hemiarthroplasty using collarless polished tapered femoral stem. Materials and Methods: We retrospectively reviewed the results of 33 patients who underwent THA and BHA using cemented CPT femoral stem from November 2006 to April 2009. The mean follow-up period was 33 months. The clinical results were evaluated with a Harris Hip Score (HSS), and radiographic results were assessed with cement grade, osteolysis, loosening, stress shielding and subsidence methods. Results: Mean HSS improved with 91 points. Postoperative cement grade was A in 14 cases, B in 14 cases, C1 in 5 cases and D in none. Aseptic loosening was not found, while focal radiolucency in zone 8 was found. 70% of stems showed grade 1 and 2 stress shielding according to Engh’s criteria. Subsidence of the femoral stem was less than 1 mm in 32 cases, and was 1.47 mm in another case. Ectopic ossification was observed in 13 cases, class I in 11 cases, and class II in 2 cases, using Brooker’s classification. Conclusion: This study showed the good clinical and radiographic results of THA and BHA with a cemented CPT femoral stem at the mid-term follow-up. However, a long-term follow-up study will be needed to evaluate the more precise clinical and radiographic outcomes.
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