The Polished MS-30 Stem With a Solid Centralizer: A Minimum 10-year Review of Radiological and Clinical Outcomes: 拋光 MS-30 假體固體與實心置中器的結合:最少術後十年的造影和臨床結果

Background/PurposeMS-30 is a triple tapered cemented femoral stem. Before 2005, it was used together with a solid centralizer. We wanted to investigate its effect on the migration behaviour and survivorship of polished stem with a minimum of 10 years.MethodsTwenty-seven hips in 26 patients were available for follow-up. The mean length of follow-up was 12.1 years. Clinical outcomes were documented with the Harris Hip Score. Radiographs were examined for evidence of aseptic loosening.ResultsThe average Harris Hip Score was 74.8. No stem was revised for aseptic loosening. Two stems (7.4%) developed radiolucent lines of more than 2 mm width with osteolysis. The mean subsidence was 0.77 mm. The survival rate at the 10th postoperative year, with aseptic loosening as the end point, was 100%.ConclusionThe polished MS-30 stem with a solid centralizer has a satisfactory long-term outcome. Its mean subsidence was less than that of other polished tapered stems reported in the literature.

中文摘要簡介MS-30是一款三維錐形的骨水泥型假体。在2005年之前它的置中器是實心的。本文探討該置中器對拋光假体的遷移行為和存活率在最少十年術後的影響 。方法我們回顧了26例（27髖），平均隨訪時間為12.1年，臨床結果以 Harris評分記錄，同時記錄了假体在X光片的鬆動跡象。結果平均Harris評分為74.8。沒有假体因無菌性鬆動而需修復。有兩個假体（7.4％）出現大於2mm寬度的透亮線 和骨溶解。假体的平均沉降是0.77毫米。在10年後以無菌性鬆動為終點的存活率為100％。結論拋光MS-30假体固體與實心置中器的結合使用具有滿意的長期結果，其平均沉降小於其他拋光錐形骨水泥型假体在文獻中的沉降。