Acetabular Liner Dissociation: A Comparative Study of Two Contemporary Uncemented Acetabular Components.

ABSTRACT:

Background

There are a number of reports of polyethylene liner dissociation of third-generation modular acetabular components. This study compares our experience with 2 contemporary systems to determine whether this is an implant- or class-specific problem.

Methods

This is a single-center retrospective study of 961 primary total hip arthroplasties using 2 third-generation modular cementless acetabular shells: Pinnacle (535) and R3 (426) with a polyethylene liner. Details of all revisions were obtained from local databases and the New Zealand Joint Registry. Kaplan-Meier survival curves were calculated for all-cause revision, acetabular reoperation (including liner exchange), and liner dissociation.

Results

There were 17 revisions in group 1 (Pinnacle; DePuy Synthes):

SUBMITTER: Gwynne-Jones DP 

PROVIDER: S-EPMC7298534 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature