{"id":2795,"date":"2024-09-03T14:34:46","date_gmt":"2024-09-03T12:34:46","guid":{"rendered":"https:\/\/endolab.org\/?post_type=hip-implants&#038;p=2795"},"modified":"2026-01-19T12:24:37","modified_gmt":"2026-01-19T11:24:37","slug":"astm-f3738","status":"publish","type":"hip-implants","link":"https:\/\/endolab.org\/de\/hip-implants\/astm-f3738\/","title":{"rendered":"ASTM F3738"},"content":{"rendered":"<p><strong>ASTM F3738<\/strong>: Standard Test Method for Hip Simulator Wear Testing of Metal-on-Polyethylene Articulations Under Adverse Conditions Using Third-Body Particles<\/p>\n\n\n\n<p><strong>ISO&nbsp;14242-1:<\/strong>&nbsp;Implants for surgery &#8211; wear of total hip prostheses &#8211; Part 1: Loading and displacement parameters for wear-testing machines and corresponding environmental conditions for tests<\/p>\n\n\n\n<p><strong>ISO&nbsp;14242-2:<\/strong>&nbsp;Implants for surgery &#8211; wear of total hip prostheses Part 2: Methods of measurement<\/p>\n\n\n\n<p>In total hip arthroplasty (THA), accelerated wear is observed when third-body particles migrate into the bearing surface. Third-body particles can be bone cement, bone chips, debris generated at modular connections or fragments from previous implant failures. All specimens are tested according to ISO\u00a014242-1 with added third-body particles using the EndoLab<sup>\u00ae<\/sup>\u00a0hip joint simulator.<\/p>\n\n\n\n<p>Particle concentration, size, and material (PMMA, ceramic, bone chip) are defined in cooperation with the customer and shall correspond to worst-case conditions. To maintain the third-body particle suspension in the test fluid, each test chamber can be circulated by individual peristaltic pumps.<\/p>\n\n\n\n<p>As an alternative, roughening of the components to a predefined Ra-value can be performed. This method allows for more consistent wear determination as third body particles do not adhere to the surfaces.<\/p>\n\n\n\n<p><\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":true,"_uag_custom_page_level_css":""},"class_list":["post-2795","hip-implants","type-hip-implants","status-publish","hentry"],"acf":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Simon Kaddick","author_link":"https:\/\/endolab.org\/de\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"ASTM F3738: Standard Test Method for Hip Simulator Wear Testing of Metal-on-Polyethylene Articulations Under Adverse Conditions Using Third-Body Particles ISO&nbsp;14242-1:&nbsp;Implants for surgery &#8211; wear of total hip prostheses &#8211; Part 1: Loading and displacement parameters for wear-testing machines and corresponding environmental conditions for tests ISO&nbsp;14242-2:&nbsp;Implants for surgery &#8211; wear of total hip prostheses Part 2:&hellip;","_links":{"self":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/hip-implants\/2795","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/hip-implants"}],"about":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/types\/hip-implants"}],"wp:attachment":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/media?parent=2795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}