Clinical and radiographic evaluation of total hip arthroplasties using porous tantalum modular acetabular components: 5-year follow-up of clinical trial
Clinical and radiographic evaluation of total hip arthroplasties using porous tantalum modular acetabular components: 5-year follow-up of clinical trial
复制标题
DOI：
10.1007/s10165-012-0618-9
复制
发表时间：
2013-01-01
影响因子：
2.2
通讯作者：
Iwamoto, Yukihide
中科院分区：
文献类型：
--
作者：
Nakashima, Yasuharu;Mashima, Naohiko;Iwamoto, Yukihide
多孔钽是一种新的应用于人工关节的生物材料。本文报告了一项采用多孔钽组配式髋臼假体（Modular PTC）行全髋关节置换术（THA）的多中心临床试验的5年随访报告，共79例82髋，平均随访61.2个月。手术时年龄为60.9岁。采用Merle d 'Aubigne Postel评分评价临床结果。影像学检查结果显示，存在植入物松动、髋臼周围射线可透性、骨质溶解和间隙填充，Merle d 'Aubigne Postel评分从10.0分提高到16.4分。所有PTC在放射学上均稳定，无进展性透亮线证据。平均聚乙烯磨损率为0.004 mm/年，无髋臼周围骨质溶解。15个髋关节（18.3%）显示间隙> 1 mm;然而，所有髋关节均在12个月内显示骨填充。扩髓尺寸过大的PTC出现间隙的可能性显著降低。未发现与组配式相关的植入物失效。5年生存率为100%，5年随访结果良好。一些髋关节显示髋臼周围间隙，在1年内被骨填充。需要进一步随访以确定长期疗效。
Porous tantalum is a biomaterial newly applied for artificial joints. We present here 5-years follow-up report of a multicenter clinical trial of total hip arthroplasties (THA) with porous tantalum modular acetabular component (modular PTC).Study participants received 82 hips in 79 cases, with 61.2 months follow-up on average. Age at operation was 60.9 years. Clinical results were evaluated using Merle d'Aubigne Postel score. Presence of implant loosening, periacetabular radiolucency, osteolysis, and gap filling were examined for radiographic results.Merle d'Aubigne Postel score improved from 10.0 to 16.4 points. All PTC were radiographically stable, with no evidence of progressive radiolucencies. Average polyethylene wear rate was 0.004 mm/year, with no periacetabular osteolysis. Fifteen hips (18.3%) showed a gap > 1 mm; however, all showed bone filling within 12 months. PTC with oversized reaming was significantly less likely to have a gap. No implant failure was noted related to modularity. Resulting survival rate of modular PTC was 100% at 5 years.Modular PTC showed excellent results at 5-years of follow-up. Some hips showed periacetabular gaps, which were filled with bone within 1 year. Further follow-up was needed to determine long-term efficacy.