Role of polyethylene particles in peri-prosthetic osteolysis:A review  

作　　者：Gerald J Atkins David R Haynes Donald W Howie David M Findlay 

机构地区：[1]Discipline of Orthopaedics and Trauma,The University of Adelaide,South Australia 5005,Australia [2]Discipline of Pathology,The University of Adelaide,South Australia 5005,Australia

出　　处：《World Journal of Orthopedics》2011年第10期93-101,共9页世界骨科杂志（英文版）

摘　　要：There is convincing evidence that particles produced by the wear of joint prostheses are causal in the periprosthetic loss of bone,or osteolysis,which,if it progresses,leads to the phenomenon of aseptic loosening.It is important to fully understand the biology of this bone loss because it threatens prosthesis survival,and loosened implants can result in peri-prosthetic fracture,which is disastrous for the patient and presents a difficult surgical scenario.The focus of this review is the bioactivity of polyethylene(PE)particles,since there is evidence that these are major players in the development and progression of osteolysis around prostheses which use PE as the bearing surface.The review describes the biological consequences of interaction of PE particles with macrophages,osteoclasts and cells of the osteoblast lineage,including osteocytes.It explores the possible cellular mechanisms of action of PE and seeks to use the findings to date to propose potential nonsurgical treatments for osteolysis.In particular,a nonsurgical approach is likely to be applicable to implants containing newer,highly cross-linked PEs(HXLPEs),for which osteolysis seems to occur with much reduced PE wear compared with conventional PEs.The caveat here is that we know little as yet about the bioactivity of HXLPE particles and addressing this constitutes our next challenge.

关 键 词：POLYETHYLENE ASEPTIC LOOSENING OSTEOLYSIS WEAR particle Peri-prosthetic 

分 类 号：R[医药卫生]