Wegrzyn Julien, Kaufman Kenton R, Hanssen Arlen D, Lewallen David G
Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
J Arthroplasty. 2015 Jun;30(6):1008-13. doi: 10.1016/j.arth.2015.01.013. Epub 2015 Jan 21.
Porous tantalum monoblock cups have been proposed to improve survivorship of cementless primary THA. However, there are few direct comparative trials to established implants such as porous-coated titanium cups. 113 patients were randomized into two groups according to the cup: a porous tantalum monoblock cup (TM) or a porous-coated titanium monoblock cup (control). At a mean of 12 years after THA, no implants migrated in both groups. Two TM patients (4%) and 13 control patients (33%) presented with radiolucency around the cup (P<0.001). In the control group, 1 cup (2%) was revised for aseptic loosening. At 12 years post-implantation, porous tantalum monoblock cups demonstrated 100% survivorship, and significantly less radiolucency as compared to porous-coated titanium monoblock cups.
多孔钽整体髋臼杯已被提出用于提高初次非骨水泥型全髋关节置换术（THA）的假体生存率。然而，与诸如多孔涂层钛杯等成熟植入物相比，直接的对比试验较少。113例患者根据所使用的髋臼杯被随机分为两组：多孔钽整体髋臼杯（TM组）或多孔涂层钛整体髋臼杯（对照组）。在THA术后平均12年时，两组均无植入物发生移位。2例TM组患者（4%）和13例对照组患者（33%）出现髋臼周围透亮线（P<0.001）。在对照组中，有1个髋臼杯（2%）因无菌性松动而进行了翻修。植入后12年时，多孔钽整体髋臼杯的假体生存率为100%，与多孔涂层钛整体髋臼杯相比，透亮线明显更少。
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