total hip arthroplasty, hip dislocation, hip replacement
DOI
10.31524/bkkmedj.2013.02.006
MEDIA
Figure 1A:
Nontraumatic anterior hip dislocation fully ex- posed lesser trochanter in external rotation. Femoral stem and cup shell were still well fixed without any sign of osteolysis.
Figure 1B:
After close reduction head was well seated into metal liner, both leg lengths were equal. Soft tissue tension was proper after telescoping test.
Figure 2:
From a careful analysis on the post reduction x-ray, elevated metal liner was seen at the inferior junction of metal- polyethylene liner interface.
Figure 3:
Shows a small amount of necrotic tissue around the impingement area. Very little metallosis is detected.
Figure 4A
Spotorno metal shell cup and liner.
Figure 4B:
Extracted Metasul liner shows inferior polyethylene surface with laminated wear. The change of metal liner position means polyethylene and metal liner disintegrated; however, they are well fixed together. The metal liner at anterosuperior is sunk. In the opposite direction, the posteroinferior border of metal liner is elevated.
Figure 5:
The back of the liner does not show wear out of locking mechanism. A small piece on the right of the liner comes from the extraction procedure.
Table 1:
Report of the number and causes of acetabular component revision
