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Part B: Supplementary Information Sheet (SIS)
FR Recognition List Number 050 Date of Recognition 09/17/2018 
FR Recognition Number 11-340
Standard
ASTM F3018-17
Standard Guide for Assessment of Hard-on-Hard Articulation Total Hip Replacement and Hip Resurfacing Arthroplasty Devices
Scope/Abstract
1.1 This guide covers materials and design recommendations and general test methods for the chemical, mechanical, and preclinical assessment of implantable devices with hardon- hard articulations intended to replace a hip joint. The provided guidance is intended to encompass both Total Hip Replacement (THR) devices with stems that extend or fix within the intramedullary canal as well as Hip Resurfacing Arthroplasty (HRA) wherein only the hip articulating surfaces are replaced. There has been long term clinical experience with metal-on-metal articulating components manufactured from cobalt-28 % chromium-6 % molybdenum (Co28Cr6Mo) alloy (Specifications F75, F799, or F1537) or high purity alumina (ISO 6474-1) and ceramic-on-ceramic articulating components manufactured from high purity alumina (ISO 6474-1) or alumina matrix composite ceramics (ISO 6474-2). There has also been some limited clinical experience with metal (Co28Cr6Mo) on alumina matrix composite ceramic articulating components. This guide has been created based on the current understanding derived from those clinical histories. Device articulating components manufactured from other metallic alloys, ceramics or with coated or elementally modified articulating surfaces could also be evaluated with this guide. However, such materials that do not have a history of clinical use may present different risks.

1.2 This guide applies to the acetabular and femoral articulating components of hard-on-hard hip replacement devices. Acetabular components can be monoblock, or a modular component with a separate acetabular shell and acetabular liner. As stated above, articulating components have been made from Co28Cr6Mo for a metal-on-metal bearing; high purity alumina or alumina matrix composite ceramics for a ceramicon- ceramic bearing; and Co28Cr6Mo and alumina matrix composite (ISO 6474-2) for a metal-on-ceramic bearing. Modular acetabular shells have to date been made from Ti-6Al-4V or Co28Cr6Mo. The shell is considered part of the acetabular component. Acetabular components may have external coating and/or porous structure intended for uncemented, press-fit or biological fixation; or, for use with bone cement.

1.3 This standard is a summary of available specifications, test methods, practices, and guides from published standards or the scientific literature. Their clinical relevance is unproven. Most of the methods do not have an established precision and bias; therefore, their repeatability and reproducibility has not been established. As the clinical relevance of these methods have not been established, consequently, most do not have performance requirements. This document does not require that all the listed methodologies are always necessary to evaluate these implant systems provided justification for not using each unused method is provided. This document does not intend to prevent the use of new methodologies as they are developed.

Extent of Recognition
Complete standard
Rationale for Recognition
This standard is relevant to medical devices and is recognized on its scientific and technical merit and/or because it supports existing regulatory policies.
Public Law, CFR Citation(s) and Procode(s)
Regulation Number Device Name Device Class Product Code
§888.3410 Prosthesis, Hip, Pelvifemoral Resurfacing, Metal/Polymer Class 3 KXB
§888.3410 Prosthesis, Hip, Pelvifemoral Resurfacing, Metal/Polymer, Uncemented Class 3 OCG
§888.3330 Prosthesis, Hip, Semi-Constrained (Metal Uncemented Acetabular Component) Class 3 KWA
§888.3320 Prosthesis, Hip, Semi-Constrained (Metal Cemented Acetabular Component) Class 3 JDL
Unclassified Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Ceramic, Cemented Class 3 LPF
Unclassified Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Ceramic/Metal, Cemented Or Uncemented Class 3 MRA
Unclassified Prosthesis, Hip, Semi-Constrained, Metal/Metal, Resurfacing Class 3 NXT
Relevant FDA Guidance and/or Supportive Publications
Guidance for Industry and FDA Staff: Non-clinical Information for Femoral Stem Prostheses, Issued September 2007.

Guidance Document for the Preparation of Premarket Notification For Ceramic Ball Hip Systems, Issued January 1995.
FDA Technical Contact
 John Goode
  FDA/OMPT/CDRH/ODE/DOD/JFDB2/
  301-796-6407
  john.goode@fda.hhs.gov
Standards Development Organization
ASTM ASTM International http://www.astm.org/
FDA Specialty Task Group (STG)
Orthopedic
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