Improving the detection of acetabular osteolysis using oblique radiographs.
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.
Duke Scholars
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DOI
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Related Subject Headings
- Radiography
- Osteolysis
- Orthopedics
- Middle Aged
- Male
- Humans
- Hip Prosthesis
- Female
- Diagnosis, Computer-Assisted
- Computer Simulation
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Radiography
- Osteolysis
- Orthopedics
- Middle Aged
- Male
- Humans
- Hip Prosthesis
- Female
- Diagnosis, Computer-Assisted
- Computer Simulation