Observations on retrieved glenoid components from total shoulder arthroplasty. Academic Article Article uri icon

Overview

MeSH

  • Aged
  • Cohort Studies
  • Female
  • Follow-Up Studies
  • Humans
  • Incidence
  • Joint Instability
  • Male
  • Materials Testing
  • Middle Aged
  • Polyethylenes
  • Probability
  • Prosthesis Design
  • Range of Motion, Articular
  • Reoperation
  • Retrospective Studies
  • Sensitivity and Specificity
  • Surface Properties

MeSH Major

  • Arthroplasty, Replacement
  • Coated Materials, Biocompatible
  • Equipment Failure Analysis
  • Joint Prosthesis
  • Prosthesis Failure
  • Shoulder Joint

abstract

  • Polyethylene components retrieved at revision of total knee and hip replacements have been analyzed to study the effect of design, patient, and surgical factors on initial implant performance, but few studies have reported similar types of findings in retrieved glenoids. From 1979 to 2006, 78 glenoid components were retrieved from revision surgery in 73 patients at a single institution. Each glenoid component was analyzed for 9 modes of damage in each of 4 quadrants into which the bearing surface was divided. For each glenoid, the most recent radiographs before removal were scored using an adapted radiolucency score. Scratching, pitting, and burnishing were the most common and most severe types of polyethylene wear. In addition, the modes of damage observed were not uniformly distributed across the bearing surface, but commonly focused in the inferior quadrant of the glenoid, suggesting a propensity for a humeral impingement mechanism leading to glenoid loosening. The radiographic analysis performed was found to severely underestimate the presence of clinical glenoid loosening. Impingement of the glenoid with bone at the edge of the humeral component and edge deformation secondary to eccentric forces of the humeral head on the glenoid rim are highly associated with glenoid loosening. Analysis of retrieved glenoid components, along with patient, design, and surgical factors, provide important information on the causes of component failure.

publication date

  • June 2009
  • May 2009

has subject area

  • Aged
  • Arthroplasty, Replacement
  • Coated Materials, Biocompatible
  • Cohort Studies
  • Equipment Failure Analysis
  • Female
  • Follow-Up Studies
  • Humans
  • Incidence
  • Joint Instability
  • Joint Prosthesis
  • Male
  • Materials Testing
  • Middle Aged
  • Polyethylenes
  • Probability
  • Prosthesis Design
  • Prosthesis Failure
  • Range of Motion, Articular
  • Reoperation
  • Retrospective Studies
  • Sensitivity and Specificity
  • Shoulder Joint
  • Surface Properties

Research

keywords

  • Comparative Study
  • Journal Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1016/j.jse.2008.12.006

PubMed ID

  • 19223206

Additional Document Info

start page

  • 371

end page

  • 378

volume

  • 18

number

  • 3