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首页> 外文期刊>BMC Musculoskeletal Disorders >A single centre study of 41 cases on the use of porous tantalum metal implants in acetabular revision surgery
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A single centre study of 41 cases on the use of porous tantalum metal implants in acetabular revision surgery

机译：单中心研究41例多孔钽金属植入物在髋臼翻修手术中的应用

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This study aims at investigating cup survival of porous tantalum revision cups and identifies risk factors for failure. We retrospectively reviewed 41 patients treated between 2010 and 2012. Main indications were aseptic loosening in 83% and two-stage exchange after periprosthetic joint infection in 17% of cases. Mean follow-up period was 72?months. Femoral megaprostheses were used in 13% of cases. Most defects were classified as Paprosky 3b (29%). Function was assessed using the Harris Hip score. Aseptic cup survivorship was 80% at 104?months (95% Confidence Interval 67.4–92.4). Overall implant survival was 73%. Major bone loss defects (Paprosky types 2c to 3b) were associated with a significantly higher rate of failure than minor defects (P?=?0.002). There were eight cases of aseptic loosening (19.5%) and two of infection (4.9%). Previous surgeries, indication for acetabular revision, patient-related risk factors and use of megaprostheses did not significantly influence implant survival. The Harris Hip Score improved from a median of 40 (Interquartile range 31–45) to 82 (interquartile range 65–88) postoperative (P??0.0001). In summary, the use of porous tantalum metal implants in acetabular revision surgery achieves good to excellent short- term and mid-term functional results and an acceptable complication rate relative to the extent of defect and previous surgery. However, one should be aware of potential limitations of the implants in addressing large defects and discontinuity.
机译：这项研究旨在调查多孔钽修正杯的杯存活率，并确定失败的风险因素。我们回顾性回顾了2010年至2012年期间接受治疗的41例患者。主要适应症是83％的无菌性松动和17％假体周围感染后的两阶段更换。平均随访期为72个月。 13％的病例使用了股骨假体。大多数缺陷被分类为Paprosky 3b（29％）。使用Harris Hip评分评估功能。 104个月时的无菌杯生存率为80％（95％置信区间67.4–92.4）。总体植入物存活率为73％。严重的骨丢失缺损（Paprosky 2c至3b型）的失败率明显高于轻微的缺损（P≥0.002）。有8例无菌性松动（19.5％）和2例感染（4.9％）。先前的手术，髋臼翻修指征，与患者相关的危险因素以及使用大假体并没有显着影响植入物的存活。术后Harris Hip评分从中位数40（四分位间距31-45）提高到82（四分位间距65-88）（P？<0.0001）。总之，在髋臼翻修手术中使用多孔钽金属植入物可获得良好或优异的短期和中期功能效果，并且相对于缺损程度和先前的手术而言，其并发症发生率可以接受。但是，应该注意植入物在解决大缺陷和不连续性方面的潜在限制。

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