광범위 다공성 표면 처리된 대퇴 스템을 이용한 인공 고관절 재치환술 - 최소 5년 이상의 추시 결과 -
Revision Total Hip Arthroplasty Using a Fully Porous-Coated Long Stem - A Minimum 5 Years Follow up -
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목적: 광범위 다공성 표면 처리 스템을 이용한 재치환술의 중기 추시 결과를 분석하였다. 대상 및 방법: 광범위 다공성 표면 처리 스템을 이용한 재치환술 후 평균 5년 5개월 추적 관찰한20예를 분석하였다. 재치환술 원인은 무균성 해리, 스템 주위 골절, 감염성 인공 관절이 있었다. 4종류의 광범위 다공성 표면 처리 스템을 사용하였고, 17예에서 골 이식을 함께 시행하였다. Harris 고관절 점수, 대퇴 동통 및 파행과 운동 범위를 평가하였으며, 수직 침강, 응력 차단, 골 용해 등 방사선 변화를 관찰하였다. 결과: Harris 고관절 점수는 56.5점에서 91.9점으로 향상되었고, 만족스런 관절 운동 범위를 보였다. 지주골 이식을 시행한 1예에서 대퇴 동통이 지속되었다. 의미 있는 스템 수직 침강 및 이완소견은 없었고, 재재치환술의 예도 없었다. 결론: 광범위 다공성 처리된 대퇴 스템의 안정성은 중기 추시에서도 잘 유지되었다. 본 술식은 간부에서 견고한 골 고정을 얻어, 골 결손이 심한 때에도 스템 안정성을 얻을 수 있고, 근위부 골 재건을 도모할 수 있으며, 다른 술식에 비하여 간편한 장점이 있다. 간부까지 골 결손이 심한 경우적합하지 않으며, 대퇴골 균열, 응력 차단, 대퇴 통증이 발생할 수 있으므로 세심한 주의가 필요하다.
Abstract
Purpose: We wanted to evaluate the mid-term results of revision total hip arthroplasty using a fully porous-coated long stem. Materials and Methods: A retrospective series of 20 hips in 19 patients who underwent stem revision with a fully porous-coated long stem were evaluated at a mean follow-up of 64.6 months. The causes of revision were aseptic loosening, periprosthetic fracture and infected arthroplasty. Four kinds of implants had previously been used and an additional bone graft procedure had been done in 17 cases. The Harris hip scores, thigh pain, limping and ROM were reported. Radiological changes of the radiolucent signs, subsidence, loosening and the stress shielding signs were evaluated. Results: The Harris hip score improved from an average of 56.5 to 91.9 and the ROMs were satisfactory. The only case with persistent thigh pain showed stable bony ingrowth. No signs of subsidence or loosening of the stem was found in all the cases. There were 2 cases of periprosthetic fracture. None of the patients experienced re-revision surgery. Conclusion: The mid-term results of revision hip arthroplasty using a fully porous coated long stem have demonstrated that it provides a reliable initial fixation with a propensity for stable longevity. It is relatively easy for the techniques, and there is the opportunity to restore the bone stock by bone-grafting procedures with diaphyseal fixation and bypassing a bone defect. Yet alternative techniques may be required for the femur with extensive diaphyseal bone loss. There are some concerns about the technique and the possibility of making a crack in the femur during the operation, which will cause thigh pain at the follow-up. So, only by employing great caution when performing this technique can successful results be guaranteed.
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