과활강제한 압박고나사 및 전자부 안정화 금속판을 이용한 불안정성 대퇴골 전자간부 골절치료
Treatment of Unstable Intertrochanteric Fractures of the Femur Using an Anti-Hypersliding Compression Hip Screw and TSP
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목적: 과활강제한 압박 고나사 및 전자부 안정화 금속판을 이용한 대퇴골 전자간부 골절 치료 후 결과를 분석하였다. 대상 및 방법: 불안정성 대퇴골 전자간부 골절로 과활강 제한 압박 고나사(A군) 또는 고식적 압박 고나사(B군)를 이용하여 수술한 100명을 대상으로 하였고 평균 추시 기간은 23.5개월이었다. 술후와 최종 추 시 전 후면 사진에서 경간각의 변화와 근의 골편의 외측 전위, 지연 나사의 활강 정도, 기구 고정의 실패, 유합까지의 기간 등을 관찰하였다. 결과: A군에서 근위 골편의 외측 전위는 평균 1.62 mm, B군은 평균 3.97 mm로 활강 정도는 A군에서 유의하게 감소하였다. 경각각은 B군에서 변화가 심하였으나 유의한 차이를 보이지 않았다. 술 후 보행 능력 및 Harris hip score는 A군이 평균적으로 높았으나 유의한 차이는 없었고 합병증 발생 빈도는 A군에서 통계적으로 유의하게 낮은 것으로 나타났고 유합율은 두 군 간의 차이가 없었다. 결론: 대퇴골 전자간부 골절 치료에 있어 지연나사의 과도한 활강으로 인해 수술의 실패율 증가 방지를 위해 전자부 안정화 금속판 사용 이외에 능률축의 과도한 변화를 일으키지 않으면서 활강을 줄일 수 있는 과활강제한 압박 고나사가 하나의 선택이 될 수 있겠다.
Abstract
Purpose: This study evaluated the result of fixation of unstable intertrochanteric fractures using an anti-hypersliding compressive hip screw and a trochanter stabilizing plate. Materials and Methods: One hundred patients with unstable intertrochanteric fractures who were given an antihypersliding compressive hip screw (Group A) or conventional compressive hip screw (Group B) were analyzed. The mean follow-up period was 23.5 months. Radiographic evaluation included the changes of neck-shaft angle, lateral displacement of proximal fragment, distal migration of the lag screw, fixation failure, and union time using plain radiographs taken at postoperative and last follow-up time. Results: Lateral displacement of the proximal fragment averaged 1.62 mm in Group A and 3.97 mm in Group B, which was statistically significant (p<0.05). The neck-shaft angle was increased in Group B, but has no significance. The average of the Harris hip score and walking ability after surgery is higher in Group A than B, but there was no significant difference. The complication rate was significantly lower in Group A. But union time showed no difference in each group. Conclusion: Anti-hypersliding compression hip screw with a TSP, which reduces sliding of the lag screw and extreme change of the moment arm, is a another good option for the treatment of intertrochanteric femoral fractures against an increase of the failure rate from the hypersliding of the lag screw.
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