ISO 5834-5:2025
(Main)Implants for surgery — Ultra-high-molecular-weight polyethylene — Part 5: Morphology assessment method
Implants for surgery — Ultra-high-molecular-weight polyethylene — Part 5: Morphology assessment method
This document specifies the test method for assessing the morphology of ultra-high-molecular-weight polyethylene (UHMWPE) moulded forms as defined in ISO 5834-2. The assessment of morphology of UHMWPE moulded forms is not required in routine monitoring of validated moulding process because alternative test methods defined in ISO 5834-2, such as density and mechanical properties, already provide reasonable, redundant assurance of successful consolidation. This document is not applicable to UHMWPE powder forms, which are described in ISO 5834-1. NOTE Performance requirements for this test method have not been established.
Implants chirurgicaux — Polyéthylène à très haute masse moléculaire — Partie 5: Méthode d'évaluation de la morphologie
Le présent document spécifie la méthode d'essai pour l'évaluation de la morphologie des produits sous forme moulée à base de polyéthylène à très haute masse moléculaire (PE-UHMW) qui sont décrits dans l'ISO 5834-2. Il ne s'applique pas aux produits sous forme de poudre à base de polyéthylène à très haute masse moléculaire qui sont décrits dans l'ISO 5834-1. NOTE Les exigences de performance applicables à la présente méthode d'essai n'ont pas été établies.
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International
Standard
ISO 5834-5
Third edition
Implants for surgery — Ultra-high-
2025-07
molecular-weight polyethylene —
Part 5:
Morphology assessment method
Implants chirurgicaux — Polyéthylène à très haute masse
moléculaire —
Partie 5: Méthode d'évaluation de la morphologie
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test method . 2
4.1 General description .2
4.2 Sampling and test specimens .2
4.2.1 General .2
4.2.2 Procedure .2
4.3 Test report .3
Annex A (informative) Examples of type A and type B non-fused flakes . 4
Bibliography . 6
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 150, Implants for surgery, Subcommittee SC 1,
Materials.
This third edition cancels and replaces the second edition (ISO 5834-5:2019), which has been technically
revised.
The main changes are as follows:
— the normative references have been updated;
— updates have been made to harmonize this document with ASTM F648-21
— Figures 1 and Figure 2 have been moved to Annex A.
A list of all parts in the ISO 5834 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
While no known surgical implant material has ever been shown to cause absolutely no adverse reactions
in the human body, long-term clinical experience with the material referred to in this document has shown
that an acceptable level of biological response can be expected when the material is used in appropriate
applications. However, this document covers the raw material and unfinished me
...
International
Standard
ISO 5834-5
Third edition
Implants for surgery — Ultra-high-
molecular-weight polyethylene —
Part 5:
Morphology assessment method
Implants chirurgicaux — Polyéthylène à très haute masse
moléculaire —
Partie 5: Méthode d'évaluation de la morphologie
PROOF/ÉPREUVE
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test method . 2
4.1 General description .2
4.2 Sampling and test specimens .2
4.2.1 General .2
4.2.2 Procedure .2
4.3 Test report .3
Annex A (informative) Examples of type A and type B non-fused flakes . 4
Bibliography . 6
PROOF/ÉPREUVE
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 150, Implants for surgery, Subcommittee SC 1,
Materials.
This third edition cancels and replaces the second edition (ISO 5834-5:2019), which has been technically
revised.
The main changes are as follows:
— the normative references have been updated;
— updates to harmonize with ASTM F648-21
— Figures 1 and Figure 2 have been moved to Annex A.
A list of all parts in the ISO 5834 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
PROOF/ÉPREUVE
iv
Introduction
While no known surgical implant material has ever been shown to cause absolutely no adverse reactions
in the human body, long-term clinical experience with the material referred to in this document has shown
that an acceptable level of biological response can be expected when the material is used in appropriate
applications. However, this document covers the raw material and not finished medical devices, where the
design and fabr
...
ISO/PRF 5834-5:2025(en)
ISO TC150/SC1/WG5/TC 150/SC 1
Secretariat: DIN
Date: 2025-05-09
Implants for surgery — Ultra-high-molecular-weight polyethylene
— —
Part 5:
Morphology assessment method
Third edition
Date: 2025-01-08
Implants chirurgicaux — Polyéthylène à très haute masse moléculaire —
Partie 5: Méthode d'évaluation de la morphologie
PROOF
ISO/PRF 5834-5:2025(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO/PRF 5834-5:2025(en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test method . 2
4.1 General description . 2
4.2 Sampling and test specimens. 2
4.3 Test report . 3
Annex A (informative) Examples of type A and type B non-fused flakes . 4
Bibliography . 9
iii
ISO/PRF 5834-5:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO [had/had not] received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that this
may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 150, Implants for surgery, Subcommittee SC 1,
Materials.
This third edition cancels and replaces the second edition (ISO 5834-5:2019), which has been technically
revised.
The main changes are as follows:
— — updates to the normative references have been updated;
— — updates to harmonize with ASTM F648-21
— — Figures 1 and Figure 2 have been moved to Annex Aan informative annex.
A list of all parts in the ISO 5834 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO/PRF 5834-5:2025(en)
Introduction
While no known surgical implant material has ever been shown to cause absolutely no adverse reactions in
the human body, long-term clinical experience with the material referred to in this document has shown that
an acceptable level of biological response can be expected when the material is used in appropriate
applications. However, this document covers the raw material and not finished medical devices, where the
design and fabrication of the device can impact biological response.
v
ISO/PRF 5834-5:2025(en)
Implants for surgery — Ultra-high-molecular-weight polyethylene —
Part 5:
Morphology assessment method
1 Scope
This document specifies the test method for assessing the morphology of ultra-high-molecular-weight
polyethylene (UHMWPE) moulded forms as defined in ISO 5834-2.
The assessment of morphology of UHMWPE moulded forms is not required in routine monitoring of validated
moulding process because alternative test methods as defined in ISO 5834-2, such as density and mechanical
properties, already provide reasonable, redundan
...
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