Faculty Collaboration Database

Geometric variations of acetabular component design and its effect on radiographic osseointegration. J Arthroplasty 2013 Feb;28(2):342-6

Date

01/26/2013

Pubmed ID

23347826

DOI

10.1016/j.arth.2012.02.012

Scopus ID

2-s2.0-84872710618 (requires institutional sign-in at Scopus site)

Abstract

The Reflection uncemented acetabular component (Smith & Nephew, Memphis, Tenn) for total hip arthroplasty is available in 2 geometric variants. The first has a completely hemispherical design; the second has a peripheral rim expansion designed to increase initial press fit and aid osseointegration. The clinical and radiologic outcomes of 527 consecutive primary total hip arthroplasties were reviewed to investigate the differences in component design. Of the components, 95.6% survived at 96 months with revision for aseptic loosening as the end point, with no significant difference between the 2 component designs. Eighty percent of hemispherical and 57% of peripherally expanded components were considered completely osseointegrated at final radiologic review. The midterm radiologic outcome of peripherally expanded acetabular components is inferior to that of a completely hemispherical design.

Author List

Edwards MR, Lutz MJ, Keast-Butler OD, Escott B, Schemitsch EH, Waddell JP

Author

Benjamin G. Escott MBBS Associate Professor in the Orthopaedic Surgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Acetabulum
Adolescent
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip
Female
Hip Joint
Hip Prosthesis
Humans
Joint Diseases
Male
Middle Aged
Osseointegration
Prosthesis Design
Prosthesis Failure
Radiography