Wright T M, Rimnac C M, Faris P M, Bansal M
Department of Biomechanics, Hosptial for Special Surgery, New York, N.Y. 10021.
J Bone Joint Surg Am. 1988 Oct;70(9):1312-9.
The performance of carbon fiber-reinforced ultra-high molecular weight polyethylene was compared with that of plain (non-reinforced) polyethylene on the basis of the damage that was observed on the articulating surfaces of retrieved tibial components of total knee prostheses. Established microscopy techniques for subjectively grading the presence and extent of surface damage and the histological structure of the surrounding tissues were used to evaluate twenty-six carbon fiber-reinforced and twenty plain polyethylene components that had been retrieved after an average of twenty-one months of implantation. All of the tibial components were from the same design of total knee replacement. The two groups of patients from whom the components were retrieved did not differ with regard to weight, the length of time that the component had been implanted, the radiographic position and angular alignment of the component, the original diagnosis, or the reason for removal of the component. The amounts and types of damage that were observed did not differ for the two materials. For both materials, the amount of damage was directly related to the length of time that the component had been implanted. The histological appearance of tissues from the area around the component did not differ for the two materials, except for the presence of fragments of carbon fiber in many of the samples from the areas around carbon fiber-reinforced components.
基于在全膝关节假体取出的胫骨部件关节表面观察到的损伤情况，对碳纤维增强超高分子量聚乙烯与普通（未增强）聚乙烯的性能进行了比较。采用既定的显微镜技术对表面损伤的存在和程度以及周围组织的组织结构进行主观分级，以评估26个碳纤维增强聚乙烯部件和20个普通聚乙烯部件，这些部件平均植入21个月后被取出。所有胫骨部件均来自同一设计的全膝关节置换术。取出部件的两组患者在体重、部件植入时间、部件的放射学位置和角度对线、最初诊断或部件取出原因方面没有差异。观察到的两种材料的损伤数量和类型没有差异。对于两种材料，损伤量都与部件植入时间直接相关。两种材料部件周围区域组织的组织学外观没有差异，只是在碳纤维增强部件周围区域的许多样本中存在碳纤维碎片。
