Volz R G
Section of Orthopedic Surgery, Arizona Health Sciences Center, Tucson 85724.
South Med J. 1989 Feb;82(2):174-7.
With the advent of noncemented total joint prostheses, today's orthopedic surgeons are asking questions about the predictability and performance of newer biologically fixed implants. Reported experience to date has failed to document any improved parameters of performance; instead, problems of prolonged convalescence, postoperative pain, and difficulties in revision procedures have been noted. Other issues of concern relate to the potential harmful effects of ion leaching, and problems of stress shielding and stress overload due to the physical properties of the materials presently available. Current investigative efforts to resolve these problems look promising, though surgeons should realize that science is a long way from producing the perfect total joint prosthesis.
随着非骨水泥型全关节假体的出现，如今的骨科医生开始质疑新型生物固定植入物的可预测性和性能。迄今为止所报道的经验未能证明其在性能参数上有任何改善；相反，出现了康复期延长、术后疼痛以及翻修手术困难等问题。其他令人担忧的问题涉及离子浸出的潜在有害影响，以及由于现有材料的物理特性导致的应力遮挡和应力过载问题。目前为解决这些问题所做的研究努力看起来很有希望，不过外科医生应该认识到，要研发出完美的全关节假体，科学还有很长的路要走。
