Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (7): 1143-1148.doi: 10.3969/j.issn.2095-4344.2017.07.028

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Acetabular liner wear of cross-linked versus conventional polyethylene for total hip arthroplasty: a meta-analysis  

Ye Xiang-yang1, Sun Xiang2, Tang Li-xin1, Zhen Ping3, Geng Bin4, Wang Hua-lei1, Zhao Yu-guo1   

  1. 1Nanyang City Central Hospital/Nanyang Hospital Affiliated to Zhengzhou University, Nanyang 473000, Henan Province, China; 2Xichuan People’s Hospital of Henan Province, Nanyang 474450, Henan Province, China; 3Department of Orthopedics, Lanzhou General Hospital of Lanzhou Military Region of Chinese PLA, Lanzhou 730050, Gansu Province, China; 4Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, Gansu Province, China
  • Revised:2017-01-15 Online:2017-03-08 Published:2017-04-11
  • About author:Ye Xiang-yang, Master, Attending physician, Nanyang City Central Hospital/Nanyang Hospital Affiliated to Zhengzhou University, Nanyang 473000, Henan Province, China
  • Supported by:

    the General Project of the National Natural Science Foundation of China, No. 81371983

Abstract:

BACKGROUND: Aseptic loosening occurs after long-term total hip replacement, which directly affects the service life and prospective efficacy of artificial joints. The particles produced by artificial joint wear lead to the surrounding bone dissolved, further cause loosening, among which, polyethylene particles because of acetabular liner wear stand out.

OBJECTIVE: To systematically assess the acetabular liner wear, loosening and osteolysis caused by cross-linked polyethylene or conventional polyethylene after total hip arthroplasty.
METHODS: A computer-based research of Medline, EMbase, CBM, CNKI, CqVip, WanFang databases before December 2015 and Cochrane (3rd issue, 2011) was performed in accordance with the retrieval strategy made by Cochrane collaboration. A manual retrieval of related bone journals and conference papers was conducted. Eleven randomized controlled trials about the wear caused by cross-linked polyethylene or conventional polyethylene after total hip arthroplasty were enrolled based on inclusion criteria, followed by a Meta-analysis using RevMan 5.0 software.
RESULTS AND CONCLUSION: (1) Eleven randomized controlled trials involving 952 patients were included. (2) Meta-analysis showed that the acetabular liner wear rate of cross-linked polyethylene was significantly lower than that of conventional polyethylene at 5 years postoperatively [MD=-0.07, CI(-0.09, -0.05), I2=93%, P < 0.000 01]; the large heterogeneity was decreased [MD=-0.06, 95%CI (-0.07, -0.04), I2=39%, P < 0.000 01] after three research removed through sensitivity analysis. (3) The osteolysis rate in the cross-linked polyethylene group was significantly lower than that in the conventional polyethylene group [RR=0.39, 95%CI (0.27, 0.57), I2=0%, P < 0.000 01]. (4) These results suggest that the cross-linked polyethylene liners exhibit reduced radiological wear and osteolysis, but the mean follow-up of 5 years (1.8 to 8.0) cannot meet the long-term requirements. Therefore, multi-central, large sample size and high-quality randomized controlled trials are needed to testify the efficacy and safety of cross-linked polyethylene.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Arthroplasty, Replacement, Hip, Prosthesis Implantation, Meta-Analysis, Tissue Engineering

CLC Number: