Improving the detection of acetabular osteolysis using oblique radiographs.

Published

Journal Article

Visualisation of periacetabular osteolysis by standard anteroposterior (AP) radiographs underestimates the extent of bone loss around a metal-backed acetabular component. We have assessed the effectiveness of standard radiological views in depicting periacetabular osteolysis, and recommend additional projections which make these lesions more visible. This was accomplished using a computerised simulation of radiological views and a radiological analysis of simulated defects placed at regular intervals around the perimeter of a cadaver acetabulum. The AP view alone showed only 38% of the defects over all of the surface of the cup and failed to depict a 3 mm lesion over 83% of the cup. When combined with the AP view, additional 45 degree obturator-oblique and iliac-oblique projections increased the depiction, showing 81% of the defects. The addition of the 60 degree obturator-oblique view further improved the visualisation of posterior defects, increasing the rate of detection to 94%. Based on this analysis, we recommend using at least three radiographic views when assessing the presence and extent of acetabular osteolysis.

Full Text

Duke Authors

Cited Authors

  • Southwell, DG; Bechtold, JE; Lew, WD; Schmidt, AH

Published Date

  • March 1999

Published In

Volume / Issue

  • 81 / 2

Start / End Page

  • 289 - 295

PubMed ID

  • 10204936

Pubmed Central ID

  • 10204936

International Standard Serial Number (ISSN)

  • 0301-620X

Language

  • eng

Conference Location

  • England