title: [Osseontegration of trial implants of carbon fiber reinforced plastics].
abstract: OBJECTIVE
  To what extent are carbon fibre-reinforced plastics (CFRP) suitable as an osseous integration surface for implants?
  
  
  METHODS
  CFRP test implants having a plexus-structured, rhombus-structured, and plexus-structured, hydroxyapatite surface were implanted in the femura of mini-plgs. Exposure time lasted 12 weeks. The implants were subjected to a macroradiological, a histological-histomorphometrical, and a fluorescence-microscopical evaluation.
  
  
  RESULTS
  One half of the uncoated, plexus-structured implants were not osteointegrated, the other half displayed an osteointegration rate of 11.8% in the spongy area and 29.8% in the cortex layer. The HA-coated test implants showed an osteointegration of 29.5% in the spongiosa and 56.8% in the cortex layer. The rhombus-structured test implants had an osteointegration of 29.2% (spongiosa) and 46.2% (cortex layer).
  
  
  CONCLUSIONS
  Compared to the osteointegration of metallic, especially titanium surfaces the CFRP surfaces tested by us fared worse, especially the uncoated, plexus-structured surfaces. For this reason we view very critically the use of carbon-fibre reinforced plastics together with the surfaces tested by us as osteointegrating surfaces.
authors.affiliation: Orthopädische Universitätsklinik Mannheim. Ute Schreiner@ortho.ma.uni-heidelberg.de
authors.forename: U
authors.initials: U
authors.lastname: Schreiner
authors.forename: M
authors.initials: M
authors.lastname: Schwarz
authors.forename: G
authors.initials: G
authors.lastname: Scheller
authors.forename: H
authors.initials: H
authors.lastname: Schroeder-Boersch
authors.forename: L
authors.initials: L
authors.lastname: Jani
mesh_terms: D000818:Animals; D001842:Bone and Bones / Q000473:pathology*; D002209:Caprolactam / Q000031:analogs & derivatives*; D002244:Carbon; D000077482:Carbon Fiber; D020099:Coated Materials, Biocompatible; D017886:Durapatite; D005269:Femur / Q000473:pathology; D008422:Materials Testing; D008856:Microscopy, Fluorescence; D016348:Osseointegration / Q000502:physiology*; D011108:Polymers; D011474:Prosthesis Design; D019919:Prosthesis Implantation; D013552:Swine; D013556:Swine, Miniature
chemical_list: D000077482:Carbon Fiber; D020099:Coated Materials, Biocompatible; D011108:Polymers; C009916:nylon 6; D002209:Caprolactam; D002244:Carbon; D017886:Durapatite
vernacular_title: Knöchernes Einwachsverhalten von Probekörpern aus kohlefaserverstärktem Kunststoff.