Fate of ultrahigh molecular weight polyethylene (Uhmw-pe) wear debris in patients with hip implants

Halina Witkiewicz, Tamas Vidovszky, Russell T. Turner, Michael G. Rock, Bernard F. Morrey, Mark E. Bolander

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The process of ultrahigh molecular weight polyethylene (UHMW-PE) breakdown, started at the articular surface of the cup, continues in small frag- ments after generation. An assiduous interaction between the UHMW-PE parti- cles and the host cells leads to oxidative changes of the UHMW-PE and to size reduction of the particles simultaneous with transporting them toward, and finally by, lymphatic or blood vessels. The particles are mobilized by means of enzy- matic, extracellular matrix-degrading activity of cells that have phagocytosed them or adhered to them. Together, these characteristics indicate an attempt by the natural cellular immunity system to eliminate the implant wear debris. Macro- phages are the main effector cells acting as scavengers;however, excessive amount of the wear debris evokes phagocytic activity of cells other than macrophages as well.

Original languageEnglish (US)
Pages (from-to)254-261
Number of pages8
JournalTechniques in Orthopaedics
Issue number4
StatePublished - 1993
Externally publishedYes


  • Ultrahigh molecular weight polyethylene

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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