SciELO - Scientific Electronic Library Online

vol.10 número1Thirty three years of clinical experience with crosslinking of polyethylene in cemented total hip replacementAnalysis of wear-related failures in long-term follow-up of crosslinked polyethylene hip sockets índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Em processo de indexaçãoSimilares em Google


SA Orthopaedic Journal

versão On-line ISSN 2309-8309
versão impressa ISSN 1681-150X


GROBBELAAR, CJ; DU PLESSIS, TA; STEFFENS, FE  e  VAN DER LINDE, MJ. Longterm evaluation of polyethylene wear in total hip replacement: a statistical analysis of the association between the degree of wear versus pain, interface change, osteolysis and implant failure. SA orthop. j. [online]. 2011, vol.10, n.1, pp.49-56. ISSN 2309-8309.

With over 3.5 decades dedicated exclusively to total joint replacement, our arthroplasty unit has repeatedly identified and reported a clear correlation between cup wear on the one hand, and pain, interface widening and osteolytic failure on the other. However, in view of the fact that this statement has sparked some controversy, clarification of this correlation became imperative, particularly in view of important clinical consequences. Materials and methods were provided by a potentially long-lasting gamma crosslinked cup. The arthroplasty follow-up ranged from 10-33 years. Objective clinical, radiographic and pathological evaluations were backed by computer analysis through the Department of Statistics at the University of Pretoria. We are able to conclude that the statistical correlation between wear, on the one hand, versus pain, interface effects and osteolysis on the other, was no coincidence but instead proved to be clearly conclusive. Of great importance is the fact that this study allowed us to set new objective criteria for true failure as well as impending failure, thus guiding us towards sensible decision-making in terms of revision surgery in these complex issues. Cup wear was thus clearly identified as the overwhelming leading variable in long-term prognosis in this type of total hip replacement.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons