Improving the detection of acetabular osteolysis using oblique radiographs
| Autor: | William D. Lew, J. E. Bechtold, A. H. Schmidt, Derek G. Southwell |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | The Journal of Bone and Joint Surgery. British volume. :289-295 |
| ISSN: | 2044-5377 0301-620X |
| DOI: | 10.1302/0301-620x.81b2.0810289 |
| Popis: | 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° obturator-oblique and iliac-oblique projections increased the depiction, showing 81% of the defects. The addition of the 60° 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. |
| Databáze: | OpenAIRE |
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