ISO/FDIS 8549-4

ISO/DIS FDIS 8549-4:2025(en)
ISO/TC 168/WG 1
Secretariat: DIN
Date: 2025-01-272026-02-16
Prosthetics and orthotics — Vocabulary —
Part 4:
Terms relating to limb amputation
Prothèses et orthèses — Vocabulaire —
Partie 4: Termes relatifs à l'amputation de membres
FDIS stage
ISO/DIS FDIS 8549-4:2024(E2026(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/DIS FDIS 8549-4:20252026(en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General limb amputation . 1
3.2 Upper limb amputation levels . 2
3.3 Lower limb amputation levels . 3
3.4 Amputation procedures . 4
Index 5
iii
ISO/DIS FDIS 8549-4:2024(E2026(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 documentdocuments 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'sISO’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 168, Prosthetics and orthotics.
This third edition cancels and replaces the second edition (ISO 8549-4:2020), which has been technically
revised.
The main changes are as follows:
— — the use of hyphens in anatomical terms, such as transpelvic, has been abandoned in line with other
parts of the ISO 8549 series;
— — the term “amputee” has been removed from the standard and replaced with “A person who have had
andan amputation”.
A list of all parts in the ISO 8549 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/DIS FDIS 8549-4:20252026(en)
Introduction
This document provides an internationally accepted terminology which describes the full range of limb
amputation levels and procedures.
This is intended for the use of all practitioners dealing with persons who have had a limb amputation to
describe their clinical experiences and compare them with the experience of others.
It willcan also be of value to other stakeholders, including persons who have had an amputation,
epidemiologists, researchers, manufacturers, and government and non-government organisations.
v
DRAFT International Standard ISO/DIS 8549-4:2025(en)

Prosthetics and orthotics — Vocabulary — Part 4: Terms relating to
limb amputation
Part 4:
Terms relating to limb amputation
1 Scope
This document specifies a vocabularydefined terms for the description of surgical limb amputations and
amputation procedures.
NOTE: Traumatic limb loss and congenital limb deficiency are not included in this document.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/
3.1 General limb amputation
3.1.1 3.1.1
limb amputation
surgical removal of the whole or par
...

DRAFT
International
Standard
ISO/DIS 8549-4
ISO/TC 168
Prosthetics and orthotics —
Secretariat: DIN
Vocabulary —
Voting begins on:
Part 4: 2024-11-12
Terms relating to limb amputation
Voting terminates on:
2025-02-04
Prothèses et orthèses — Vocabulaire —
Partie 4: Termes relatifs à l'amputation de membres
ICS: 11.040.40; 01.040.11
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
This document is circulated as received from the committee secretariat.
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 8549-4:2024(en)
DRAFT
ISO/DIS 8549-4:2024(en)
International
Standard
ISO/DIS 8549-4
ISO/TC 168
Prosthetics and orthotics —
Secretariat: DIN
Vocabulary —
Voting begins on:
Part 4:
Terms relating to limb amputation
Voting terminates on:
Prothèses et orthèses — Vocabulaire —
Partie 4: Termes relatifs à l'amputation de membres
ICS: 11.040.40; 01.040.11
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
This document is circulated as received from the committee secretariat. BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 8549-4:2024(en)
ii
ISO/DIS 8549-4:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General limb amputation .1
3.2 Upper limb amputation levels .2
3.3 Lower limb amputation levels .3
3.4 Amputation procedures .4
Index . 5

iii
ISO/DIS 8549-4:2024(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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
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 168, Prosthetics and orthotics.
This third edition cancels and replaces the second edition (ISO 8549-4:2020), which has been technically
revised.
The main changes are as follows:
— The use of hypens in anatomical terms, such as transpelvic, has been abandoned in line with other parts
of the ISO 8549 series;
— The term “amputee” has been removed from the standard and replaced with “A person whose had and
amputation”.
A list of all parts in the ISO 8549 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
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