Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Rath, C.
Migration Analysis with EBRA Results of the cementless "Pinnacle¿ acetabular component¿
[ Diplomarbeit ] Medical University of Graz; 2011. pp. 59
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- Autor*innen der Med Uni Graz:
- Betreuer*innen:
- Radl Roman
- Zacherl Maximilian
- Altmetrics:
- Abstract:
- In the current study clinical outcome and migration behaviour of 70 Pinnacle¿ cups have been analyzed and evaluated after an average 3.7 year follow-up. The Pinnacle¿ cup is a third-generation, porous-coated, modular acetabular component. The clinical examination consisted of three standardized questionnaires: the UCLA activity score, the Harris Hip Score and the 36 item short- form. The clinical data of the latest follow up examination were encouraging, showing remarkable results in all three scores. Mean HHS was 95.6 points, mean UCLA was 6.9 points and the SF-36 scores in the subgroups bodily pain, mental health and physical functioning were excellent. Compared to the clinical scores of the second-generation Duraloc predecessor, the clinical results of the present group were superior. For the radiological evaluation EBRA (Einzel-Bild-Röntgen-Analyse) digital software was applied. Mean total-migration was 0.74 mm after 3 months, 1.15 mm after 12 months and 1.59 mm after 36 months. The results demonstrate progressive migration of the Pinnacle¿ acetabular component in the first 3 months after surgery, but thereafter a rapid decrease in migration speed occurs indicating that secondary stabilisation has obviously occurred. No revision surgery due to aseptic loosening had to be performed. Our findings add to the accumulating evidence that revision surgery due to aseptical loosening in hemispheric porous-coated cups is a rare complication. We can conclude that the Pinnacle¿ cup can be recommended for the uncemented use.