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首页> 外文期刊>Orthopedics >Dual mobility for chronic hip instability: a solution option.
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Dual mobility for chronic hip instability: a solution option.

机译：双重活动性可治疗慢性髋关节不稳：一种解决方案。

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摘要

A dual-mobility acetabular component consists of a large, fixed, porous-coated acetabular component and a bipolar femoral component. These components are often called tripolar components. This configuration provides a stable, well-fixed implant platform against bone and 2 articular interfaces, a large polyethylene surface directly apposed to the highly polished metal shell, and a standard sized (28 mm, 32 mm) femoral head captured within polyethylene. The dual-mobility cup was designed to reduce the incidence of dislocations in patients at increased risk of instability (eg, patients undergoing revision). The cup appears to offer a safe, effective, durable solution to hip instability. The concept has extensive laboratory and clinical support. Although the long-term durability of dual-mobility cups, particularly in young, active, large patients, is not known, the tested wear rates of the dual-mobility design with the current generation of highly cross-linked polyethylene are significantly lower than any previously reported wear rates. The recently released anatomic dual-mobility cup seeks to reduce the potential for iliopsoas impingement while retaining the stability and wear characteristics of the original dual-mobility design.
机译：双活动髋臼组件由大的，固定的，多孔涂层的髋臼组件和双极股骨组件组成。这些组件通常称为三极组件。这种配置提供了一个稳定，固定良好的植入物平台，可抵御骨头和2个关节界面，直接与高度抛光的金属外壳贴合的大型聚乙烯表面以及捕获在聚乙烯内的标准尺寸（28 mm，32 mm）的股骨头。双移动杯旨在减少不稳定风险增加的患者（例如，接受翻修的患者）的脱位发生率。该罩杯似乎可以为髋部不稳定提供安全，有效，持久的解决方案。该概念具有广泛的实验室和临床支持。尽管尚不知道双移动杯的长期耐用性，尤其是在年轻的，活跃的大病人中，但当前一代高度交联的聚乙烯的双移动设计的测试磨损率明显低于任何一种。先前报告的磨损率。最近发布的解剖学上的双重活动杯试图在保持原始双重活动设计的稳定性和耐磨性的同时，减少潜在的肌冲击。

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