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首页> 外文期刊>Journal of orthopaedics and traumatology: official journal of the Italian Society of Orthopaedics and Traumatology >A comparative study on medium-term results of cementless acetabular components with metal-on-metal and metal-on-polyethylene articulations
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A comparative study on medium-term results of cementless acetabular components with metal-on-metal and metal-on-polyethylene articulations

机译：金属对金属和聚乙烯对金属非髋臼髋臼假体中期结果的比较研究

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The purpose of this study was to evaluate the medium-term clinical and radiological outcomes of two metal-backed acetabular cups with metal-on-metal and metal-on-polyethylene joint couples, in patients unselected for age. Seventy-five metal-on-polyethylene CLS expansion cups were implanted in 70 patients and 66 metal-on-metal Fitek cups were implanted in 65 patients. The average age at surgery in the two groups was 63 years (range, 25 to 72 years) and 58 years (range, 32 to 68 years), respectively. Data regarding 64 of 75 CLS cups (85%) and 58 of 66 Fitek cups (88%) were collected at a minimum 36-month and maximum 144-month follow-up. The Harris hip score showed excellent results in 86% of the CLS cups, good results in 7%, and fair results in 7%. No poor results were recorded. For metal-on-metal acetabular components, excellent results were recorded in 84% of the cups, good results in 8%, fair results in 5%, and poor results in 3%. Fifty-five patients with 57 of 64 CLS cups (89%) and 50 patients with 51 of 58 Fitek cups (88%) were fully satisfied with their prosthesis. No acetabular reconstructions were revised for aseptic loosening. No radiolucent lines greater than 2 mm were observed, either about CLS or Fitek cups, and low incidence of osteolysis and polyethylene wear was noted in metal-on-polyethylene articulations. Post-operative three-phase bone scanning was obtained in 51 patients and this examination did not show increased uptake in blood pool or bone phase indicating aseptic loosening of CLS and Fitek cups. In conclusion, we found similar rates of excellent and good results using two acetabular components with different bearing surfaces, in patients of unselected age. Therefore, the less expensive implant should be selected for total hip arthroplasty in elderly or low-demand patients.
机译：这项研究的目的是评估未选择年龄的两个带有金属对金属和金属对聚乙烯接头的金属支持髋臼杯的中期临床和放射学结果。 70例患者中植入了75个金属对聚乙烯CLS扩张杯，65例患者中植入了66个金属对金属Fitek杯。两组的平均手术年龄分别为63岁（25至72岁）和58岁（32至68岁）。在至少36个月和最大144个月的随访中收集了有关75个CLS杯子中的64个（85％）和66个Fitek杯子中的58个（88％）的数据。 Harris髋关节得分在86％的CLS杯中显示出色的结果，在7％中显示良好的结果，在7％中显示良好的结果。没有记录到差的结果。对于金属对金属髋臼组件，在84％的杯子中记录了出色的结果，在8％中记录了良好的结果，在5％中记录了良好的结果，在3％中记录了差的结果。 55位患者中有64个CLS杯中的57个（89％）和50个患者中58个Fitek杯中的51个（88％）的假体完全满意。没有对髋臼重建进行无菌性松动的修订。无论是CLS杯还是Fitek杯，都没有观察到大于2 mm的射线可透线，并且在金属与聚乙烯的铰接中，骨溶解和聚乙烯磨损的发生率较低。术后有3例患者进行了3期骨扫描，该检查未显示血池或骨中摄取增加，表明CLS和Fitek杯无菌松动。总之，对于未选择年龄的患者，我们发现使用两种具有不同承压面的髋臼组件可获得相似的优良率。因此，在老年或低需求患者中，应选择较便宜的植入物进行全髋关节置换术。

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