Factors Affecting Flexural Strength in Cement Within Cement Revisions

被引：8

作者：

Dang, Kieran ^{[1
]}

Pelletier, Matthew H. ^{[1
]}

Walsh, William R. ^{[1
]}

机构：

[1] Univ New S Wales, Surg & Orthopaed Res Labs, Sydney, NSW, Australia

来源：

JOURNAL OF ARTHROPLASTY | 2011年 / 26卷 / 08期

关键词：

arthroplasty; revision; cement within cement; PMMA; polymethylmethacrylate; bone cement; TOTAL HIP-ARTHROPLASTY; ACRYLIC BONE CEMENTS; STEM; POLYMETHYLMETHACRYLATE;

D O I：

10.1016/j.arth.2011.01.013

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

Cement within cement revisions provide substantial benefits for conventional revision yet remains uncommon possibly because of the perceived weakness of the cement-cement interface. This study investigated the flexural strength of beams composed of 2 different cements, exploring the factors of pore size, fracture location, viscosity, and the surface roughness of the interface. We found no significant difference when comparing combinations of different cements (P = .30), varying pore sizes (P = .13), or surface roughness (P = .39). Differences in fracture locations and viscosity combinations approached statistical significance (P = .08 and .05, respectively). Our findings suggest strong bonding between cements at the interface, with other factors being more important causes of weakness. Thus, we recommend that the strength of the cement-cement interface should not be a factor when considering such revisions.

引用

页码：1540 / 1548

页数：9

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