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  • Biological impact of polyacetal particles on loosening of isoelastic stems
    Stražar, Klemen ; Cör, Andrej ; Antolič, Vane
    The aim of our study was to identify biological factors responsible for premature loosening of polyacetal hip stems. The results of histological analyses of the tissue around 11 total hip prostheses ... with loosened polyacetalfemoral stems were compared to those obtained in a group of 11 totalhip prostheses with loosened metal (CoCr) femoral components. A higher number of polymer wear particles surrounded by giant cells, more bone chips, and a more extensive necrosis were found around loosened polyacetal stems. Histomorphological characteristics of polyacetal wear particles containing BaSO(4) granules in the tissue around loosened polyacetal stems were described. Radiological evaluation of the wear of polyethylene cups suggested that elastic modulus of the stem had no influence on the wear of polyethylene cups. This study indicates that polyacetal wear particles have a great biological potential accelerating the process of loosening.
    Vir: Biomacromolecules. - ISSN 1525-7797 (Letn. 7, št. 9, 2006, str. 2507-2511)
    Vrsta gradiva - članek, sestavni del
    Leto - 2006
    Jezik - angleški
    COBISS.SI-ID - 21607385

vir: Biomacromolecules. - ISSN 1525-7797 (Letn. 7, št. 9, 2006, str. 2507-2511)
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