Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Keshmiri, A.
Migration analysis with EBRA-FCA - A seven year follow-up of a cementless stem.
[ Diplomarbeit/Master Thesis ] Graz Medical University; 2009. pp.67.
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- Autor*innen der Med Uni Graz:
- Betreuer*innen:
- Radl Roman
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- Abstract:
- In this study, subsidence and clinical outcome of 105 cementless VISION 2000 stems were evaluated over a mean 7 year follow-up. For measurement of subsidence EBRA-FCA (Einzel-Bild-Röntgen-Analyse, Femoral Component Assessment) was used, while clinical evaluation was performed using Harris-Hip-Score. Results showed a migration rate of the VISION 2000 stem with mean 1.38 mm at 2 and mean 2.07 mm subsidence after 7 years. Thus 19% (19/102) of stems were considered to be loose after 2 years according to definition. Also a decrease of subsidence speed of mean 0.97 mm at the first year to 0.17 mm at the fifth year after implantation could be demonstrated. Revision surgery due to aseptic loosening had to be performed in 4.8% (5/105) of cases, a very high incidence. In our evaluation, we could not show a significant correlation between migration behaviour and clinical outcome. However subsidence at 2 years correlated high significant with incidence of aseptic loosening (p=0.04) and therefore we can confirm the conclusion of many other authors, that early migration is predictive for stem failure. Due to high incidence of aseptic loosening in this 7 years follow-up we conclude that the VISION 2000 stem can not be recommended for cementless implantation.