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MATING SURFACES IN HIP ARTHROPLASTY  CURRENT TRENDS IN MODERN HIP SURGERY TRENDS AND REAL INNOVATIONS IN THE 1° IMPLANT 

Minerva Ortopedica e Traumatologica 2006 August;57(4):233-40

Copyright © 2006 EDIZIONI MINERVA MEDICA

language: Italian

Polyethylene and ....

Bistolfi A. 1, 2, Dolfin M. 1, Bracco P. 3, Costa L. 3, Brach Del Prever E. M. 2

1 Seconda Clinica Ortopedica Università degli Studi di Torino, Torino 2 Dipartimento di Ortopedia, Traumatologia e Medicina del Lavoro Azienda Ospedaliera CTO CRF, M. Adelaide, Torino 3 Dipartimento di Chimica Inorganica e Chimica FisicaUniversità degli Studi di Torino, Torino


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Main polyethylene-related topics are discussed: a) the effects of high energy irradiation during the sterilisation, the consequent changes of the chemico-physical properties and the reduction of the molecular weight; b) the interaction with oxygen during the manipulation, the storage and the in vivo service of the implants and the oxidation; c) the cellular reaction to the wear debris and the aseptic loosening; d) the crosslinking process and its effects on the wear resistance and on the other mechanical properties; e) the roughness of the articulating surface and the choice of metal or ceramic inserts; f) the problem of the packaging and the storage of the inserts; g) future expectations, like the use of vitamin E for stabilisation and antioxidation of the polyethylene.

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