Migration of the acetabular component: Effect of cement pressurization and significance of early radiolucency

Abstract

Pressurization of the cement produced better cement penetration and increased the cup stability in terms of changes in inclination. Early findings of radiolucent lines can predict later unfavorable cup migration.

The Influence of a Suction Device on Fixation of a Cemented Cup using RSA

“…With a power of 0.8 and a significance level of 0.05, at least 17 patients were needed in each group. These assumptions were confirmed by the results reported by Flivik et al [11]. Allowing for a loss to followup rate of 15%, an initial aim of 20 patients per group was set.…”

3D real-time micromechanical compressive behaviour of bone–cement interface: Experimental and finite element studies

“…Cementing techniques such as pressurisation were found useful in increasing the mechanical interlocking and stability of the interface (Oates et al, 1995;Flivik et al, 2005). Several methods have been used to evaluate interdigitation.…”

High-precision measurements of cementless acetabular components using model-based RSA: An experimental study

“…The study by Flivik et al (2005) revealed the precision with a cemented cup, and the subsequent studies by Önsten et al (1994), Valstar et al (1997), andThanner et al (2000) reported the precision with an uncemented acetabular component. All studies were performed with the use of tantalum markers, with the exception of the study by Valstar et al (1997) who used the hemispherical cup algorithmbased RSA system.…”

“…This contrasts with the Monoblock cup used in the present study, which consists of the highly radiopaque tantalum metal. Flivik et al (2005) used an all-polyethylene cup, the Opticup, where all markers could be identified in a straightforward manner. When the hemispherical cup algorithm RSA software was applied to the hemispherical cup, the confidence interval of the translation along all axes was wider than with the conventional RSA system or the MbRSA system.…”