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U.S. Department of Health and Human Services

Recognized Consensus Standards

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Part B: Supplementary Information Sheet (SIS)
FR Recognition List Number 036 Date of Recognition 07/09/2014 
FR Recognition Number 11-279
Standard
ASTM F2996-13
Standard Practice for Finite Element Analysis (FEA) of Non-Modular Metallic Orthopaedic Hip Femoral Stems
Scope/Abstract
1.1 This practice establishes requirements and considerations for the numerical simulation of non-modular (that is, limited to monolithic stems with only a femoral head / trunnion taper interface) metallic orthopaedic hip stems using Finite Element Analysis (FEA) techniques for the estimation of stresses and strains. This standard is only applicable to stresses below the yield strength, as provided in the material certification.

1.2 Purpose-This practice establishes requirements and considerations for the development of finite element models to be used in the evaluation of non-modular metallic orthopaedic hip stem designs for the purpose of prediction of the static implant stresses and strains. This procedure can be used for worst case assessment within a family of implant s to provide efficiencies in the amount of physical testing to be conducted. Recommended procedures for performing model checks and verification are provided to help determine if the analysis follows recommended guidelines. Finally, the recommended content of an engineering report covering the mechanical simulation is presented.

1.3 Limits-This practice is limited in discussion to the static structural analysis of non-modular metallic orthopaedic hip stems (which excludes the prediction of fatigue strength).

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
§888.3390 Prosthesis, Hip, Hemi-, Femoral, Metal/Polymer, Cemented Or Uncemented Class 2 KWY
§888.3360 Prosthesis, Hip, Femoral Component, Cemented, Metal Class 2 JDG
§888.3360 Prosthesis, Hip, Hemi-, Femoral, Metal Class 2 KWL
§888.3360 Prosthesis, Hip, Semi-Constrained, Metal/Polymer, Uncemented Class 2 LWJ
§888.3360 Prosthesis, Upper Femoral Class 2 JDD
§888.3358 Hip Prosthesis, Semi-Constrained, Cemented, Metal/Polymer, + Additive, Porous, Uncemented Class 2 OQG
§888.3358 Prosthesis, Hip, Semi-Constrained, Metal/Polymer, Porous Uncemented Class 2 LPH
§888.3358 Prosthesis, Hip, Semi-Constrained, Uncemented, Metal/Polymer, Porous Class 2 MBL
§888.3353 Hip, Semi-Constrained, Cemented, Metal/Ceramic/Polymer + Additive, Porous Uncemented Class 2 OQI
§888.3353 Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Polymer, Cemented Or Non-Porous Cemented, Osteophilic Finish Class 2 MAY
§888.3353 Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Polymer, Cemented Or Non-Porous, Uncemented Class 2 LZO
§888.3353 Prosthesis, Hip, Semi-Constrained, Uncemented, Metal / Polymer, Non-Porous, Calcium Phosphate Class 2 MEH
§888.3350 Hip, Semi-Constrained, Cemented, Metal/Polymer + Additive, Cemented Class 2 OQH
§888.3350 Prosthesis, Hip, Semi-Constrained, Metal/Polymer, Cemented Class 2 JDI
§888.3340 Prosthesis, Hip, Semi-Constrained, Composite/Metal Class 2 KMC
§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
§888.3310 Prosthesis, Hip, Constrained, Cemented Or Uncemented, Metal/Polymer Class 2 KWZ
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
Relevant FDA Guidance and/or Supportive Publications
Guidance for Industry and FDA Staff: Non-clinical Information for Femoral Stem Prostheses, September 17, 2007 http://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/GuidanceDocuments/ucm071275.htm
Standards Development Organization
ASTM ASTM International http://www.astm.org/
FDA Specialty Task Group (STG)
Orthopedic
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