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首页> 外文会议>Bioceramics >Medial Placement of a Cementless Acetabular Component in a Modern Alumina-on-Alumina THA
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Medial Placement of a Cementless Acetabular Component in a Modern Alumina-on-Alumina THA

机译：在现代氧化铝对氧化铝THA中非骨水泥髋臼组件的内侧放置

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Medial placement of a cementless acetabular component into or beyond the medial wall of a shallow, dysplastic acetabulum is a technique to enhance its coverage during difficult total hip arthroplasty (THA). Dysplastic hips almost always need small size of acetabular component, so an accelerated polyethylene wear can occur when a conventional bearing surface is used. Modern alumina-on-alumina couplings can be an alternative for these patients. We evaluated the clinical results of 43 medially placed cementless acetabular components (PLASMACUP~RSC) incorporating a modern alumina bearing surface (BIOLOX~R forte). Acetabular components were inserted medially beyond the ilioischial line and, therefore, beyond the level of the cortical bone of the cotyloid notch, and followed up for more than 5 years (range, 60 - 93 months). In 14 hips, the medial acetabular wall was perforated purposefully and the medial aspect of the cup was placed beyond both the ilioischial and the iliopubic line on radiographs. The mean Harris hip score improved from 55.3 points preoperatively to 94.5 points postoperatively. Postoperatively, the hip center migrated 12.1 mm medially and 1.5 mm inferiorly. The average amount of cup protrusion beyond the ilioischial and the iliopubic line was 3.1 mm and 1.9 mm, respectively. The average superolateral coverage of the cup was 98.5 percent. During follow-up, no osteolysis or loosening of acetabular components was observed and no revision was required. Medial placement of a cementless acetabular component into or beyond the medial acetabular wall offers predictable clinical results and durable fixation in modern alumina-on-alumina THA.
机译：在非全髋臼置换术中，将非骨水泥髋臼组件向内侧放置或放置在浅，发育不良的髋臼内侧壁中或超出其位置。发育不良的髋关节几乎总是需要小尺寸的髋臼组件，因此当使用常规的支承面时，可能会加速聚乙烯的磨损。对于这些患者，现代的氧化铝-氧化铝连接器可以替代。我们评估了43个结合了现代氧化铝承托表面（BIOLOX〜R forte）的内侧非骨水泥髋臼组件（PLASMACUP〜RSC）的临床结果。髋臼组件被插入到内侧，超出了oi骨线，因此超出了Cotyloid切口的皮质骨水平，并进行了5年以上的随访（范围为60-93个月）。在14个髋部中，有目的地对髋臼内侧壁进行穿孔，并在X射线照片上将杯的内侧放置在回oi线和pub耻线之外。 Harris髋关节平均评分从术前的55.3分提高到术后的94.5分。术后，髋中心向内侧移动12.1 mm，向下方移动1.5 mm。杯突超出beyond骨线和the骨线的平均数量分别为3.1 mm和1.9 mm。杯的平均上外侧覆盖率为98.5％。在随访期间，未观察到骨溶解或髋臼组件松动，也无需翻修。将非骨水泥髋臼组件向内侧或超出内侧髋臼壁的内侧放置可提供可预测的临床结果，并在现代氧化铝上氧化铝THA中持久固定。

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