title: Porous prostheses: an electron microscopic study.
abstract: Proplast and Plastipore prostheses, removed at revision surgery, have been examined under the electron microscope. Foreign material in the multinucleated foreign body giant cells, previously reported under the light microscope, has been confirmed. The appearances were consistent with the conclusion that the giant cells were breaking down the prostheses by two different modes of action. X-ray elemental analysis is of limited value in this investigation because of the low atomic number of the elements involved. However, such analysis of this foreign material was consistent with the conclusion that it arose from the prosthesis.
mesh_terms: D001672:Biocompatible Materials; D004432:Ear, Middle / Q000648:ultrastructure*; D005549:Foreign-Body Reaction / Q000473:pathology*; D006801:Humans; D011095:Polyethylenes / Q000009:adverse effects; D011126:Polypropylenes; D011138:Polytetrafluoroethylene / Q000009:adverse effects; D011428:Proplast / Q000009:adverse effects; D019736:Prostheses and Implants / Q000009:adverse effects
chemical_list: D001672:Biocompatible Materials; C016674:Plastipore; D011095:Polyethylenes; D011126:Polypropylenes; D011428:Proplast; D011138:Polytetrafluoroethylene