Abstract

This document specifies procedures for static and cyclic strength tests on lower-limb prostheses (see NOTE 2) which typically produce compound loadings by the application of a single test force. The compound loads in the test sample relate to the peak values of the components of loading which normally occur at different instants during the stance phase of walking. This document specifies Test Ranges (R) by specifying locomotion profiles for the cyclic test in relation to the intended use. According to the concept of the tests of this document, each sample of lower limb prosthetic device or structure submitted for test is, nevertheless, free to develop its individual performance under load. The tests described in this document comprise: principal static and cyclic tests for all components; a separate static test in torsion for all components; separate static and cyclic tests on ankle-foot devices and foot units for all ankle-foot devices as single components including ankle units or ankle attachments and all foot units as single components; a separate static ultimate strength test in maximum knee flexion on knee joints and associated parts for all knee units or knee-shin-assemblies and adjacent components that normally provide the flexion stop on a complete prosthesis; optional separate tests on knee locks for all mechanisms which lock the knee joint in the extended position of the knee unit or knee-shin-assembly. The tests described in this document apply to specific types of ankle-disarticulation prostheses (see NOTE 2), to transtibial (below-knee), knee-disarticulation and transfemoral (above-knee) prostheses and to the distal (lower) part of hip-disarticulation and hemi-pelvectomy prostheses (see NOTE 3). The test geometry described in this standard is only intended to be used up to a level of 150 mm above the knee-joint centre. This document is suitable for the assessment of the conformity of lower limb prosthetic devices or structures with the strength requirements specified in ISO 22523:2006, 4.4 (see NOTE 1). Lower limb prosthetic devices or structures on the market, which have demonstrated their compliance with the strength requirements specified in ISO 22523:2006, 4.4 through submission to the relevant tests of ISO 22523:2006, need not be retested to this document. NOTE 1 The tests can be performed on complete structures, on part structures or on individual components. NOTE 2 The tests only apply to ankle-disarticulation prostheses which include (foot) components of prosthetic ankle-foot devices taken from the normal production line. NOTE 3 The distal part comprises the knee unit, the ankle-foot device and all parts between. Tests on hip units are described in ISO 15032.

Status
Published
Publication Date
05-Nov-2026
Current Stage
6060 - International Standard published
Start Date
06-Nov-2026
Completion Date
06-Nov-2026

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ISO 10328:2026 - Prosthetics — Structural testing of lower-limb prostheses — Requirements and test methods

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ISO 10328:2026 - Prothèses — Essais portant sur la structure des prothèses de membres inférieurs — Exigences et méthodes d’essai

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ISO 10328 is an ISO International Standard for structural testing of lower-limb prostheses. It specifies static and cyclic strength test methods, sample preparation, alignment, equipment accuracy, reporting, and conformity rules for manufacturers, submitters, and test laboratories that need to verify the strength of prosthetic devices and structures under defined loading conditions.

ISO 10328 is a test standard, not a guide for choosing a specific prosthesis for an individual amputee. It is used to assess complete structures, partial assemblies, and components such as ankle-foot devices, foot units, knee units, and knee locks.

What does ISO 10328 specify?

ISO 10328 specifies procedures for static and cyclic strength tests on lower-limb prostheses, using a single applied test force to create compound loads that represent load components occurring at different times during the stance phase of walking. The document also gives the Test Range (R) concept, so the same test family can be matched to the intended use of the device.

The scope covers principal static and cyclic tests for all components, a separate static test in torsion, separate tests on ankle-foot devices and foot units, a separate static ultimate strength test in maximum knee flexion for knee joints and associated parts, and optional separate tests on knee locks. The scope also states that the document is suitable for assessing conformity with the strength requirements in ISO 22523:2006, 4.4.

The document applies to ankle-disarticulation prostheses with foot components from the normal production line, transtibial, knee-disarticulation and transfemoral prostheses, and the distal part of hip-disarticulation and hemi-pelvectomy prostheses. The test geometry is intended for use only up to 150 mm above the knee-joint centre, which matters when the prosthesis is longer or the test setup needs a different geometry.

The scope includes an explicit warning that ISO 10328 is not suitable as a guide for the prescription of a specific lower-limb prosthesis for an individual person. That warning matters in practice because the standard is for verification and testing, not clinical selection.

ISO 10328 is organized into clauses 1 to 21, covering scope, normative references, terms, symbols, strength requirements, coordinate systems, loading conditions, load values, conformity, test samples, responsibilities, submission documents, equipment, accuracy, test principles, principal tests, separate tests, logs, reports, classification and designation, and conformance. It also includes informative annexes A to H and Annex ZA.

AnnexWhat it covers
Annex ADescription of internal loads and their effects
Annex BReference data for test loading conditions, loading levels, and Test Ranges (R) of principal cyclic tests
Annex CGuidance on an alternative static ultimate strength test
Annex DSummary of records for the test laboratory or facility log
Annex EBackground information on loading profiles for separate cyclic tests on ankle-foot devices and foot units
Annex FBackground data from the six-minute walk test for adults
Annex GGuidance on an additional test loading level P2
Annex HAlternative test geometry for loading conditions I and II
Annex ZARelationship to the General Safety and Performance Requirements of Regulation (EU) 2017/745

What are the key requirements of ISO 10328?

ISO 10328 uses a clear safety concept: the manufacturer or submitter assigns a Test Range (R) from the written intended use, and the test loading level must match that intended use. In practice, this means the test plan is not arbitrary - it has to reflect the body mass limit, activity expectations, and intended application stated for the prosthetic device or structure.

Loading levels, ranges, and intended use

ISO 10328 uses adult test loading levels P3, P4, P5, P6, P7 and P8, with P2 given in Annex G for additional lower-load applications. The cyclic tests vary the force to represent different Test Ranges, and a higher Test Range (R) also covers lower Test Ranges at the same P-level.

Clause 5 requires the prosthetic device or structure to sustain loads occurring during use in the manner intended by the manufacturer. That matters because the standard ties the test result to a defined use case, not to every possible use in real life.

Geometry, alignment, and samples

ISO 10328 bases its tests on right-sided and mirrored left-sided coordinate systems with u, o and f axes, plus top, knee, ankle and bottom reference planes. This matters in practice because the alignment and load line determine the internal bending and torsional loads created by the test force.

All tests are performed in the worst-case alignment position. If the structurally worst alignment cannot be defined by the manufacturer or submitter, the sample is adjusted 90% of the way from neutral to extreme alignment, away from the load line to increase the effective lever arm.

Clause 10 requires test samples to include all parts normally fitted, while cosmetic components are omitted unless they contribute to structural strength. Socket and socket-dummy samples need special preparation so the distal part can deform freely and the proximal part can be rigidly connected for the test.

Test methods and what they show

The principal structural tests are the core of the standard: a principal static proof test, a principal static ultimate strength test, and a principal cyclic test. These tests are supplemented by a separate static torsion test, separate tests on ankle-foot devices and foot units, a separate static ultimate strength test in maximum knee flexion, and optional tests on knee locks.

ISO 10328 also includes a shock absorption capacity method in the ultimate strength test. That method compares absorbed energy on the force-deflection curve, which helps decide whether a specimen can absorb a severe event by deflecting without a proportional increase in force.

The cyclic tests use repeated loading followed by a final static test, and the document allows replacement of parts that would normally be replaced in service when the cycle count reaches the indicated point. For a buyer or engineer, that means the test sequence can reflect realistic maintenance and service intervals, not only a one-piece endurance run.

Conformity, documentation, and identifiers

Clause 9 links conformity to the right combination of tests in Table 13 and to the required number of samples from the permitted batch in Table 14. A conformity claim must state the test loading level and Test Range (R) used, because the claim only applies to the specific test level that was demonstrated.

ISO 10328 also requires a test submission document, a laboratory log, and a test report. The lab records the sample identification, test equipment, alignment, loads, failures, and unusual observations, and the report states where conformity was and was not demonstrated.

Clause 20 and Clause 21 define the classification and identifier format as ISO 10328 - P - R - m kg, where m is the body mass limit stated by the manufacturer. In practice, that identifier links the tested strength level to the product’s intended user limit and should appear in the instructions for use or on the device or packaging.

ISO 10328 also allows reuse of a specimen in certain cases after it has passed an earlier test, but the reuse and the realignment must be recorded. That matters for test planning because the actual number of specimens can be lower than a simple one-test-one-sample count.

What terms does ISO 10328 define?

ISO 10328 adopts the terms in ISO 8549-1 and adds its own definitions for testing and strength assessment.

  • Proof strength - a static load representing an occasional severe event that the prosthetic device or structure can sustain and still function as intended.
  • Ultimate strength - a static load representing a gross single event that the device or structure can sustain but that may leave it unusable afterward.
  • Fatigue strength - a cyclic load that the device or structure can sustain for a given number of cycles.
  • Batch - a set of test samples submitted together to a laboratory or facility for conformity testing.
  • Shock absorption capacity - the ability of a specimen to absorb energy by deflection without a proportional increase in force.
  • Test force - the force applied to a sample under test.
  • Test Range (R) - the loading range assigned from the intended use that selects the cyclic test condition.
  • Prosthesis - an externally applied device used to replace wholly or partly an absent limb segment.

Who uses ISO 10328?

ISO 10328 is used by manufacturers and suppliers of lower-limb prosthetic devices and structures, especially when they need to define intended-use limits and demonstrate strength performance. It is also used by test laboratories and test facilities that prepare samples, run the tests, and issue reports.

Quality, regulatory, and conformity assessment teams use ISO 10328 to decide which tests apply to a complete structure, a partial assembly, or a single component. It is particularly relevant in the prosthetics and orthotics sector for transtibial, transfemoral, knee-disarticulation, ankle-disarticulation, and related lower-limb prosthetic designs.

What changed in ISO 10328 from the previous edition?

ISO 10328 is the third edition and it cancels and replaces ISO 10328:2016. The foreword says the edition has been technically revised.

  • Offsets for P3 and P4 were combined into the test offset for P5, and the test geometry was revised by moving the outward offset at the bottom reference plane over the forward axis from -19 mm to +19 mm.
  • P6 to P8 were moved into the main tables, former Annex D was removed, former Annex E and F were renamed Annex D and E, former Annex G was removed, and new Annex F, G and H were added.
  • Test Ranges (R) were introduced.
  • Test forces in Table 11 were adjusted for P3 and P4.
  • A method to analyse shock absorption capacity was added.
  • Separate tests on knee locks became optional and their methods were removed from the document.
  • The test geometry is limited to 150 mm above knee-joint centre.
  • Clause 21 was renamed to Conformance to this document, and the reference to labelling was removed.
  • The loading rate between 100 N/s and 10 kN/s is now normative.

Which standards are used with ISO 10328?

StandardHow it is used with ISO 10328
ISO 15223-1:2021+A1:2025Provides symbols used with information supplied by the manufacturer, including symbols used on the identifier layout
ISO 8549-1Provides the vocabulary for external limb prostheses and external orthoses
ISO 22523:2006Provides the external limb prosthesis and external orthosis requirements and test methods, including the strength requirements in 4.4 that ISO 10328 is used to assess
IEC 60417Provides graphical symbols for use on equipment
ISO 15032Related standard in the bibliography for structural testing of hip units
ISO 22675Related standard in the bibliography for testing ankle-foot devices and foot units

What does the ISO 10328 document contain?

ISO 10328 contains coordinate-system figures, reference planes, reference points, and load-line diagrams that define how the prosthesis is positioned for test. It also contains tables of test loads, dimensions, offsets, angles, load factors, and cycle counts for the different P-levels and Test Ranges.

The document includes test procedures for principal static and cyclic tests, separate torsion tests, ankle-foot device and foot unit tests, maximum knee flexion tests, and optional knee-lock tests. These procedures are supported by equipment requirements, accuracy limits, sample preparation rules, and detailed responsibilities for the manufacturer, submitter, and laboratory.

Annex B provides formulas and background data used to derive internal loads and offsets, while Annex C explains an alternative static ultimate strength approach. Annex D through H give supporting records, loading-profile background, pediatric low-load guidance, and an alternative test geometry.

Relations

Effective Date
12-Feb-2026
Effective Date
29-Apr-2023

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Frequently Asked Questions

ISO 10328:2026 is a standard published by the International Organization for Standardization (ISO). Its full title is "Prosthetics — Structural testing of lower-limb prostheses — Requirements and test methods". This standard covers: This document specifies procedures for static and cyclic strength tests on lower-limb prostheses (see NOTE 2) which typically produce compound loadings by the application of a single test force. The compound loads in the test sample relate to the peak values of the components of loading which normally occur at different instants during the stance phase of walking. This document specifies Test Ranges (R) by specifying locomotion profiles for the cyclic test in relation to the intended use. According to the concept of the tests of this document, each sample of lower limb prosthetic device or structure submitted for test is, nevertheless, free to develop its individual performance under load. The tests described in this document comprise: principal static and cyclic tests for all components; a separate static test in torsion for all components; separate static and cyclic tests on ankle-foot devices and foot units for all ankle-foot devices as single components including ankle units or ankle attachments and all foot units as single components; a separate static ultimate strength test in maximum knee flexion on knee joints and associated parts for all knee units or knee-shin-assemblies and adjacent components that normally provide the flexion stop on a complete prosthesis; optional separate tests on knee locks for all mechanisms which lock the knee joint in the extended position of the knee unit or knee-shin-assembly. The tests described in this document apply to specific types of ankle-disarticulation prostheses (see NOTE 2), to transtibial (below-knee), knee-disarticulation and transfemoral (above-knee) prostheses and to the distal (lower) part of hip-disarticulation and hemi-pelvectomy prostheses (see NOTE 3). The test geometry described in this standard is only intended to be used up to a level of 150 mm above the knee-joint centre. This document is suitable for the assessment of the conformity of lower limb prosthetic devices or structures with the strength requirements specified in ISO 22523:2006, 4.4 (see NOTE 1). Lower limb prosthetic devices or structures on the market, which have demonstrated their compliance with the strength requirements specified in ISO 22523:2006, 4.4 through submission to the relevant tests of ISO 22523:2006, need not be retested to this document. NOTE 1 The tests can be performed on complete structures, on part structures or on individual components. NOTE 2 The tests only apply to ankle-disarticulation prostheses which include (foot) components of prosthetic ankle-foot devices taken from the normal production line. NOTE 3 The distal part comprises the knee unit, the ankle-foot device and all parts between. Tests on hip units are described in ISO 15032.

This document specifies procedures for static and cyclic strength tests on lower-limb prostheses (see NOTE 2) which typically produce compound loadings by the application of a single test force. The compound loads in the test sample relate to the peak values of the components of loading which normally occur at different instants during the stance phase of walking. This document specifies Test Ranges (R) by specifying locomotion profiles for the cyclic test in relation to the intended use. According to the concept of the tests of this document, each sample of lower limb prosthetic device or structure submitted for test is, nevertheless, free to develop its individual performance under load. The tests described in this document comprise: principal static and cyclic tests for all components; a separate static test in torsion for all components; separate static and cyclic tests on ankle-foot devices and foot units for all ankle-foot devices as single components including ankle units or ankle attachments and all foot units as single components; a separate static ultimate strength test in maximum knee flexion on knee joints and associated parts for all knee units or knee-shin-assemblies and adjacent components that normally provide the flexion stop on a complete prosthesis; optional separate tests on knee locks for all mechanisms which lock the knee joint in the extended position of the knee unit or knee-shin-assembly. The tests described in this document apply to specific types of ankle-disarticulation prostheses (see NOTE 2), to transtibial (below-knee), knee-disarticulation and transfemoral (above-knee) prostheses and to the distal (lower) part of hip-disarticulation and hemi-pelvectomy prostheses (see NOTE 3). The test geometry described in this standard is only intended to be used up to a level of 150 mm above the knee-joint centre. This document is suitable for the assessment of the conformity of lower limb prosthetic devices or structures with the strength requirements specified in ISO 22523:2006, 4.4 (see NOTE 1). Lower limb prosthetic devices or structures on the market, which have demonstrated their compliance with the strength requirements specified in ISO 22523:2006, 4.4 through submission to the relevant tests of ISO 22523:2006, need not be retested to this document. NOTE 1 The tests can be performed on complete structures, on part structures or on individual components. NOTE 2 The tests only apply to ankle-disarticulation prostheses which include (foot) components of prosthetic ankle-foot devices taken from the normal production line. NOTE 3 The distal part comprises the knee unit, the ankle-foot device and all parts between. Tests on hip units are described in ISO 15032.

ISO 10328:2026 is classified under the following ICS (International Classification for Standards) categories: 11.040.40 - Implants for surgery, prosthetics and orthotics. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 10328:2026 has the following relationships with other standards: It is inter standard links to FprEN ISO 10328, ISO 10328:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 10328:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


International
Standard
ISO 10328
Third edition
Prosthetics — Structural testing
2026-11
of lower-limb prostheses —
Requirements and test methods
Prothèses — Essais portant sur la structure des prothèses de
membres inférieurs — Exigences et méthodes d’essai
Reference number
© ISO 2026
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photocopying, scanning, recording, or posting on internal or external digital platforms.
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Published in Switzerland
ii
Contents Page
Foreword .vii
Introduction .ix
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Symbols . 3
5 Strength and related performance requirements and conditions of use . 3
6 Coordinate systems and test configurations . 5
6.1 General .5
6.2 Axes of coordinate systems.5
6.3 Reference planes .5
6.3.1 General .5
6.3.2 Top reference plane, T.5
6.3.3 Knee reference plane, K .5
6.3.4 Ankle reference plane, A .6
6.3.5 Bottom reference plane, B . .6
6.4 Reference points.7
6.5 Test force . .8
6.6 Load line .8
6.7 Longitudinal axis of the foot and effective joint centres and centrelines .8
6.7.1 General .8
6.7.2 Longitudinal axis of the foot .8
6.7.3 Effective ankle-joint centre .8
6.7.4 Effective ankle-joint centreline .10
6.7.5 Effective knee-joint centreline . .10
6.7.6 Effective knee-joint centre .11
6.8 Reference distances .11
6.8.1 Offsets .11
6.8.2 Combined offsets .11
6.8.3 Effective lever arms L and L .11
A K
6.8.4 Distance L .11
BT
7 Test loading conditions and test loading levels .11
7.1 Test loading conditions .11
7.1.1 General .11
7.1.2 Test loading conditions of principal structural tests . 12
7.1.3 Test loading conditions of separate structural tests . 12
7.2 Test loading levels and Test Ranges (R) . 12
8 Values of test loads, dimensions and cycles . 14
9 Conformity . .20
9.1 General . 20
9.2 Selection of tests required to claim conformity with this document . 20
9.3 Arrangements for tests on samples of prosthetic structures including ankle-foot
devices or foot units, required to claim conformity with this document . 20
9.3.1 General . 20
9.3.2 Particular arrangements concerning the ankle-foot device or foot unit . 20
9.3.3 Particular arrangements and requirements concerning the part required to
connect the ankle-foot device or foot unit to the remainder of the prosthetic
structure .21
9.4 Number of tests and test samples required to claim conformity with this document .21
9.5 Multiple use of test samples . .21
9.5.1 General .21

iii
9.5.2 Restriction . 22
9.6 Testing at particular test loading levels not specified in this document . 22
10 Test samples .24
10.1 Selection of test samples .24
10.1.1 General .24
10.1.2 Selection of ankle-foot devices and foot units of appropriate size of foot . 25
10.2 Types of test samples . 26
10.2.1 Complete structure . 26
10.2.2 Partial structure . 28
10.2.3 Any other structure . 28
10.3 Preparation of test samples . 28
10.4 Identification of test samples . 29
10.5 Alignment of test samples . 30
10.5.1 Test samples for principal tests and optional separate tests on knee locks . 30
10.5.2 Test samples for separate tests on ankle-foot devices and foot units . 30
10.5.3 Test samples for separate static ultimate strength tests in maximum knee
flexion for knee joints and associated parts . 30
10.6 Worst-case alignment position of test samples .31
11 Responsibility for test preparation .32
12 Test submission document . .33
12.1 General requirements . 33
12.2 Information required for test samples . 33
12.2.1 All test samples . 33
12.2.2 Test samples for tests on ankle-foot devices and foot units . 34
12.2.3 Test samples for static ultimate strength tests in maximum knee flexion for
knee joints and associated parts . 34
12.3 Information required for tests . 34
12.3.1 General . 34
12.3.2 For all tests . 34
12.3.3 For static tests in torsion and on ankle-foot devices and foot units . 34
12.3.4 For static ultimate strength tests . 35
12.3.5 For cyclic tests . 35
12.3.6 For tests in torsion . 35
12.3.7 For tests on ankle-foot devices and foot units . 35
13 Equipment .35
13.1 General . 35
13.2 Equipment for the principal tests specified in 16.2 and 16.3 . 36
13.2.1 End attachments . 36
13.2.2 Jig (optional) . 38
13.2.3 Test equipment . 38
13.3 Equipment for the separate static test in torsion specified in 17.1 . 40
13.3.1 Test equipment . 40
13.4 Equipment for the separate tests on ankle-foot devices and foot units specified in 17.2 . 40
13.4.1 Test equipment . 40
13.5 Equipment for the separate static ultimate strength test in maximum knee flexion for
knee joints and associated parts specified in 17.3 . 44
13.5.1 Extension pieces . 44
13.5.2 Test equipment to perform static compression loading (Compression testing
machine or other equipment) . 44
13.6 Equipment and end attachments for the optional separate tests on knee locks specified
in 17.4 . 44
14 Accuracy .44
14.1 General . 44
14.2 Accuracy of equipment . 44
14.3 Accuracy of procedure .45
15 Test principles .45

iv
15.1 General .45
15.2 Static test procedure .45
15.3 Cyclic test procedure . 48
16 Test procedures – Principal structural tests .48
16.1 Test loading requirements . 48
16.1.1 Preparation for test loading . 48
16.1.2 Application of test loading . 48
16.2 Principal static test procedure . . 50
16.2.1 Principal static proof test . 50
16.2.2 Principal static ultimate strength test . 55
16.3 Principal cyclic test procedure .57
16.3.1 General requirements .57
16.3.2 Test method . 58
16.3.3 Performance requirements . .62
16.3.4 Conformance conditions .62
17 Test procedures — Separate structural tests .65
17.1 Separate static test in torsion . 65
17.1.1 General . 65
17.1.2 Purpose of test . 66
17.1.3 Test method . 66
17.1.4 Performance requirements . . 68
17.1.5 Conformity conditions . 68
17.2 Separate tests on ankle-foot devices and foot units . 69
17.2.1 General . 69
17.2.2 Purpose of tests .70
17.2.3 Separate static proof test for ankle-foot devices and foot units .70
17.2.4 Separate static ultimate strength test for ankle-foot devices and foot units . 72
17.2.5 Separate cyclic test for ankle-foot devices and foot units .76
17.3 Separate static ultimate strength test in maximum knee flexion for knee joints and
associated parts . 81
17.3.1 General . 81
17.3.2 Purpose of test . 82
17.3.3 Applicability of the test to specific test samples. 82
17.3.4 Test method . 82
17.3.5 Performance requirement . 83
17.3.6 Conformance conditions . 83
17.4 Separate optional tests on knee locks . 84
17.4.1 General . 84
17.4.2 Purpose of tests . 84
18 Test laboratory or facility log . .85
18.1 General requirements . 85
18.2 Specific requirements . 85
19 Test report .85
19.1 General requirements . 85
19.2 Specific requirements . 86
19.3 Options. 86
20 Classification and designation .86
20.1 General . 86
20.2 Examples of classification and designation . 86
21 Conformance with this document .87
21.1 General . 87
21.2 Example of identifier layout . 87
21.3 Identifier placement . 87
Annex A (informative) Description of internal loads and their effects .88

v
Annex B (informative) Reference data for the specification of test loading conditions and test
loading levels and Test Ranges (R) of principal cyclic tests .92
Annex C (informative) Guidance on the application of an alternative static ultimate strength
test .96
Annex D (informative) Summary of the records to enter in the test laboratory or facility log .97
Annex E (informative) Background information on the loading profiles generated by test
equipment according to 13.4.1.2 for separate cyclic tests for ankle-foot devices and foot
units according to 17.2.5.1 .107
Annex F (informative) Background data (reduced) of the six-minute walk test for adults .109
Annex G (informative) Guidance on the application of an additional test loading level P2 .110
Annex H (informative) Alternative test geometry for loading condition I and II derived from
recent biomechanical studies .114
Bibliography .116

vi
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of patent.
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 patents 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 168, Prosthetics and orthotics, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 293, Assistive
products and accessibility, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 10328:2016), which has been technically
revised.
The main changes are as follows:
— Offsets for P3 and P4 are combined into the test offset for P5 in Table 6 and have been removed from
document. Geometry of the test setup has been revised by moving the outward offset at bottom reference
plane over the forward axis, resulting in the offset changing from ‒19 mm to +19 mm to align with results
from modern gait analysis. Outwards offsets knee and ankle have been adjusted accordingly.
— Test load levels P6 through P8 previously in former Annex D have been included in Tables 5, 8 and 11 and
the Annex removed from the document. Former Annex E and F have been renamed to Annex D and E and
references updated. Former Annex G has been removed. New Annex F, Annex G and Annex H have been
added.
— Test Ranges (R) for the strength test have been introduced, related to the intended use of the device. The
ranges differ by different loading factors, while tests load levels remain unchanged apart from rounding
and accommodation to changed offsets (see below).
— Test forces in Table 11 have been adjusted for P3 and P4.
— A method to analyse shock absorption capacity has been added, which eliminates the difficulty to decide
whether a device passes or fails above the ultimate static lower load level.
— Separate tests on knee locks are now optional tests and the test methods on separate tests on knee locks
have been removed from the document.
— Test geometry defined in this document is limited to 150 mm above knee-joint centre.

vii
— Clause 21 has been renamed to “Conformance to this document” and reference to Labelling has been
removed from the document.
— Table 1, Table 4, Table 5, Table 6, Table 7, Table 8, Table 9, Table 10 and Table 11 have been updated and
forces adjusted for new unified offsets.
— Table B.1, Table B.2, Table B.3 and Table B.4 have been updated.
— The rate of loading of between 100 N/s and 10 kN/s is now normative.
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.

viii
Introduction
As a result of concern in the international community about the need to provide prostheses that are safe in
use, and also because of an awareness that test standards would assist the development of better prostheses,
a series of meetings was held under the aegis of the International Society for Prosthetics and Orthotics
(ISPO). The final one was held in Philadelphia, PA, USA in 1977 at which a preliminary consensus was
reached on methods of testing and the required load values. From 1979 onwards this and following work led
to the development of the ISO 10328:1996 series and consequent revisions. The test procedures might not be
applicable to prostheses of mechanical characteristics different from those used in the consensus.
During use, a prosthesis is subjected to a series of load actions, each varying individually with time. The test
methods specified in this document use static and cyclic strength tests which typically produce compound
loadings by the application of a single test force.
The static tests relate to the worst loads generated in any activity. The cyclic tests relate to normal walking
activities where loads occur regularly with each step. This document specifies fatigue testing of structural
components. The tests specified do not provide sufficient data to predict actual service life.
The evaluation of lower-limb prostheses and their components requires controlled field trials in addition to
the laboratory tests specified in this document.
The laboratory tests and field trials should be repeated when significant design changes are made to a load-
bearing part of a prosthesis.
Ideally, additional laboratory tests should be carried out to deal with function, wear and tear, new material
developments, environmental influences and user activities as part of the evaluation procedure. There are
no standards for such tests, so appropriate procedures will need to be determined.

ix
International Standard ISO 10328:2026(en)
Prosthetics — Structural testing of lower-limb prostheses —
Requirements and test methods
WARNING — This document is not suitable to serve as a guide for the selection of a specific lower
limb prosthetic device or structure in the prescription of an individual lower limb prosthesis. Any
disregard of this warning can result in a safety risk for amputees.
1 Scope
This document specifies procedures for static and cyclic strength tests on lower-limb prostheses (see
NOTE 2) which typically produce compound loadings by the application of a single test force. The compound
loads in the test sample relate to the peak values of the components of loading which normally occur at
different instants during the stance phase of walking.
This document specifies Test Ranges (R) by specifying locomotion profiles for the cyclic test in relation to
the intended use. According to the concept of the tests of this document, each sample of lower limb prosthetic
device or structure submitted for test is, nevertheless, free to develop its individual performance under load.
The tests described in this document comprise:
— principal static and cyclic tests for all components;
— a separate static test in torsion for all components;
— separate static and cyclic tests on ankle-foot devices and foot units for all ankle-foot devices as single
components including ankle units or ankle attachments and all foot units as single components;
— a separate static ultimate strength test in maximum knee flexion on knee joints and associated parts for
all knee units or knee-shin-assemblies and adjacent components that normally provide the flexion stop
on a complete prosthesis;
— optional separate tests on knee locks for all mechanisms which lock the knee joint in the extended
position of the knee unit or knee-shin-assembly.
The tests described in this document apply to specific types of ankle-disarticulation prostheses (see
NOTE 2), to transtibial (below-knee), knee-disarticulation and transfemoral (above-knee) prostheses and
to the distal (lower) part of hip-disarticulation and hemi-pelvectomy prostheses (see NOTE 3). The test
geometry described in this standard is only intended to be used up to a level of 150 mm above the knee-joint
centre.
This document is suitable for the assessment of the conformity of lower limb prosthetic devices or structures
with the strength requirements specified in ISO 22523:2006, 4.4 (see NOTE 1). Lower limb prosthetic devices
or structures on the market, which have demonstrated their compliance with the strength requirements
specified in ISO 22523:2006, 4.4 through submission to the relevant tests of ISO 22523:2006, need not be
retested to this document.
NOTE 1 The tests can be performed on complete structures, on part structures or on individual components.
NOTE 2 The tests only apply to ankle-disarticulation prostheses which include (foot) components of prosthetic
ankle-foot devices taken from the normal production line.
NOTE 3 The distal part comprises the knee unit, the ankle-foot device and all parts between. Tests on hip units are
described in ISO 15032.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 8549-1, Prosthetics and orthotics — Vocabulary — Part 1: General terms for external limb prostheses and
external orthoses
ISO 15223-1:2021, Medical devices — Symbols to be used with information to be supplied by the manufacturer —
Part 1: General requirements
ISO 22523:2006, External limb prostheses and external orthoses — Requirements and test methods
IEC 60417, Graphical symbols for use on equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8549-1 and the following apply.
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
proof strength
static load representing an occasional severe
...


Norme
internationale
ISO 10328
Troisième édition
Prothèses — Essais portant sur
2026-11
la structure des prothèses de
membres inférieurs — Exigences et
méthodes d’essai
Prosthetics — Structural testing of lower-limb prostheses —
Requirements and test methods
Numéro de référence
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Publié en Suisse
ii
Sommaire Page
Avant-propos .vii
Introduction .ix
1 Domaine d’application . 1
2 Références normatives . 2
3 Termes et définitions . 2
4 Symboles . 3
5 Résistance et exigences de performances associées, conditions d’utilisation . 4
6 Systèmes de coordonnées et configurations d’essai . 5
6.1 Généralités .5
6.2 Axes des systèmes de coordonnées .6
6.3 Plans de référence.6
6.3.1 Généralités .6
6.3.2 Plan de référence supérieur, T .6
6.3.3 Plan de référence du genou, K .6
6.3.4 Plan de référence de la cheville, A .6
6.3.5 Plan de référence inférieur, B .7
6.4 Points de référence .8
6.5 Force d’essai .9
6.6 Ligne de charge .9
6.7 Axe longitudinal du pied, centres et axes réels de l’articulation .9
6.7.1 Généralités .9
6.7.2 Axe longitudinal du pied .9
6.7.3 Centre réel de l’articulation de la cheville .9
6.7.4 Axe réel de l’articulation de la cheville .11
6.7.5 Axe réel de l’articulation du genou .11
6.7.6 Centre réel de l’articulation du genou . 12
6.8 Distances de référence . 12
6.8.1 Décalages . 12
6.8.2 Décalages combinés . 12
6.8.3 Bras de levier réels L et L . 12
A K
6.8.4 Distance L . 12
BT
7 Conditions de mise en contrainte d’essai et niveaux de contrainte d’essai .12
7.1 Conditions de mise en contrainte d’essai . 12
7.1.1 Généralités . 12
7.1.2 Conditions de mise en contrainte des essais principaux de structure . 13
7.1.3 Conditions de mise en contrainte des essais de structure séparés . 13
7.2 Niveaux de contrainte d’essai et plages d’essai (R) .14
8 Valeurs des contraintes d’essai, dimensions et cycles .15
9 Conformité .23
9.1 Généralités . 23
9.2 Sélection des essais requis en vue de la déclaration de conformité au présent document . 23
9.3 Dispositions relatives aux essais réalisés sur les échantillons de structures
prothétiques comprenant des ensembles cheville-pied ou des unités de pied requises
en vue de la déclaration de conformité au présent document . 23
9.3.1 Généralités . 23
9.3.2 Dispositions particulières relatives à l’ensemble cheville-pied ou l’unité de pied .24
9.3.3 Dispositions particulières et exigences relatives à la partie nécessaire à la
liaison de l’ensemble cheville-pied ou de l’unité de pied au reste de la structure
prothétique .24
9.4 Nombre d’essais et d’échantillons d’essai requis en vue de la déclaration de conformité
au présent document .24

iii
9.5 Usage multiple des échantillons d’essai . 25
9.5.1 Généralités . 25
9.5.2 Restriction . 25
9.6 Essais réalisés à des niveaux de contrainte d’essai spécifiques non spécifiés dans
le présent document . 25
10 Échantillons d’essai .28
10.1 Sélection des échantillons d’essai . 28
10.1.1 Généralités . 28
10.1.2 Sélection des ensembles cheville-pied et des unités de pied de dimensions de
pied appropriées . 28
10.2 Types d’échantillon d’essai . . 29
10.2.1 Structure complète . . 29
10.2.2 Structure partielle .31
10.2.3 Autres structures .31
10.3 Préparation des échantillons d’essai .31
10.4 Identification des échantillons d’essai . 33
10.5 Alignement des échantillons d’essai . 33
10.5.1 Échantillons d’essai relatifs aux essais principaux et aux essais séparés
facultatifs réalisés sur les verrous de genou . 33
10.5.2 Échantillons d’essai relatifs aux essais séparés réalisés sur les ensembles
cheville-pied et les unités de pied . 33
10.5.3 Échantillons d’essai relatifs aux essais statiques séparés de résistance à la
rupture en flexion maximale du genou réalisés sur les articulations du genou et
les éléments associés . 34
10.6 Position d’alignement la plus défavorable des échantillons d’essai . 35
11 Responsabilités relatives à la préparation d’essai .36
12 Bon de commande de l’essai .37
12.1 Exigences générales .37
12.2 Informations requises relatives aux échantillons d’essai . 38
12.2.1 Tous les échantillons d’essai . 38
12.2.2 Échantillons d’essai relatifs aux essais réalisés sur les ensembles cheville-pied
et les unités de pied . . 38
12.2.3 Échantillons d’essai relatifs aux essais statiques de résistance à la rupture
en flexion maximale du genou réalisés sur les articulations du genou et les
éléments associés . 38
12.3 Informations requises relatives aux essais . 38
12.3.1 Généralités . 38
12.3.2 Pour tous les essais . 39
12.3.3 Pour les essais statiques en torsion et réalisés sur les ensembles cheville-pied
et les unités de pied . . 39
12.3.4 Pour les essais statiques de résistance à la rupture . 39
12.3.5 Pour les essais cycliques . 39
12.3.6 Pour les essais en torsion. 39
12.3.7 Pour les essais portant sur les ensembles cheville-pied et les unités de pied . 39
13 Équipement .40
13.1 Généralités . 40
13.2 Équipement relatif aux essais principaux spécifiés en 16.2 et 16.3 . 40
13.2.1 Pièces de liaison . 40
13.2.2 Goupille d’alignement (facultatif) .43
13.2.3 Équipement d’essai .43
13.3 Équipement relatif à l’essai statique en torsion séparé spécifié en 17.1 .45
13.3.1 Équipement d’essai .45
13.4 Équipement relatif aux essais portant sur les ensembles cheville-pied ainsi que sur
les unités de pied spécifiés en 17.2 .45
13.4.1 Équipement d’essai .45

iv
13.5 Équipement relatif à l’essai statique séparé de résistance à la rupture en flexion
maximale du genou réalisé sur les articulations du genou et les éléments associés
spécifié en 17.3 . 48
13.5.1 Pièces de rallonge . 48
13.5.2 Équipement d’essai utilisé afin de réaliser la mise en contrainte de compression
statique (machine d’essai en compression ou tout autre équipement) . 49
13.6 Équipement et pièces de liaison relatifs aux essais séparés facultatifs réalisés sur les
verrous de genou spécifiés en 17.4 . 49
14 Exactitude .49
14.1 Généralités . 49
14.2 Exactitude de l’équipement . 49
14.3 Exactitude du mode opératoire . 49
15 Principes d’essai .50
15.1 Généralités . 50
15.2 Mode opératoire de l’essai statique. 50
15.3 Mode opératoire de l’essai cyclique . 53
16 Modes opératoires d’essai — Essais principaux de structure .53
16.1 Exigences de mise en contrainte d’essai . 53
16.1.1 Préparation pour la mise en contrainte d’essai . 53
16.1.2 Application de mise en contrainte d’essai . . 54
16.2 Principal mode opératoire d’essai statique . 55
16.2.1 Principal essai statique de charge . 55
16.2.2 Essai statique principal de résistance à la rupture .59
16.3 Mode opératoire d’essai cyclique principal . 63
16.3.1 Exigences générales . 63
16.3.2 Méthode d’essai . 64
16.3.3 Exigences de performances . 68
16.3.4 Conditions de conformité . 69
17 Modes opératoires d’essai — Essais de structure séparés .72
17.1 Essai statique en torsion séparé . 72
17.1.1 Généralités . 72
17.1.2 Finalité de l’essai . 73
17.1.3 Méthode d’essai . 73
17.1.4 Exigences de performances . 75
17.1.5 Conditions de conformité . 75
17.2 Essais séparés réalisés sur les ensembles cheville-pied et les unités de pied .76
17.2.1 Généralités .76
17.2.2 Finalité des essais . . 77
17.2.3 Essai statique de charge séparé des ensembles cheville-pied et des unités de pied . 77
17.2.4 Essai statique séparé de résistance à la rupture des ensembles cheville-pied et
des unités de pied . 80
17.2.5 Essai cyclique séparé des ensembles cheville-pied et des unités de pied . 85
17.3 Essai statique séparé de résistance à la rupture en flexion maximale du genou
des articulations de genou et des éléments associés .91
17.3.1 Généralités .91
17.3.2 Finalité de l’essai .91
17.3.3 Applicabilité de l’essai à des échantillons d’essai spécifiques .91
17.3.4 Méthode d’essai . 92
17.3.5 Exigence de performances . 93
17.3.6 Conditions de conformité . 93
17.4 Essais facultatifs séparés des verrous de genou . 94
17.4.1 Généralités . 94
17.4.2 Finalité des essais . . 94
18 Journal de laboratoire ou d’organisme d’essai .95
18.1 Exigences générales . 95
18.2 Exigences spécifiques . 95

v
19 Rapport d’essai .95
19.1 Exigences générales . 95
19.2 Exigences spécifiques . 96
19.3 Options. 96
20 Classification et désignation .96
20.1 Généralités . 96
20.2 Exemples de classification et de désignation . 97
21 Conformité au présent document .97
21.1 Généralités . 97
21.2 Exemples de mise en forme de l’identifiant . 97
21.3 Emplacement de l’identifiant . 98
Annexe A (informative) Description des charges internes et de leurs effets .99
Annexe B (informative) Données de référence pour la spécification des conditions de mise
en contrainte d’essai, des niveaux de contrainte d’essai et des plages d’essai (R) des
essais cycliques principaux .103
Annexe C (informative) Recommandations relatives à l’application d’un essai statique de
résistance à la rupture de substitution .107
Annexe D (informative) Résumé des relevés à entrer dans le journal du laboratoire ou de
l’organisme d’essai .108
Annexe E (informative) Informations générales relatives aux profils de mise en contrainte
générés par l’équipement d’essai conformément à 13.4.1.2 pour les essais cycliques
séparés des ensembles cheville-pied et des unités de pied conformément à 17.2.5.1.119
Annexe F (informative) Données de base (réduites) de l’essai de marche de six minutes pour les
adultes .121
Annexe G (informative) Recommandations relatives à l’application d’un niveau de contrainte
d’essai supplémentaire P2 .122
Annexe H (informative) Géométrie d’essai alternative pour les conditions de mise en
contrainte I et II découlant d’études biomécaniques récentes .127
Bibliographie .129

vi
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’ISO n’avait pas
reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois,
il y a lieu d’avertir les responsables de la mise en application du présent document que des informations
plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à l'adresse
www.iso.org/brevets. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié tout ou partie de
tels droits de propriété.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité ISO/TC 168, Prothèses et orthèses, en collaboration avec
le comité technique CEN/TC 293, Produits d’assistance et accessibilité, du Comité européen de normalisation
(CEN), conformément à l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette troisième édition annule et remplace la deuxième édition (ISO 10328:2016), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— les décalages pour P3 et P4 sont combinés dans le décalage d’essai pour P5 dans le Tableau 6 et ont
été supprimés du document. La géométrie de la configuration d’essai a été révisée en déplaçant sur
l’axe avant le décalage vers l’extérieur dans le plan de référence inférieur. Le décalage est donc passé de
‒19 mm à +19 mm pour s’aligner sur les résultats d’une analyse récente de la marche. Les décalages du
genou et de la cheville vers l’extérieur ont été ajustés en conséquence;
— les niveaux de contrainte d’essai P6 à P8 qui figuraient précédemment dans l’ancienne Annexe D ont été
inclus dans les Tableaux 5, 8 et 11 et l’Annexe a été supprimée du document. Les anciennes Annexes E
et F ont été renommées en Annexes D et E et les références ont été mises à jour. L’ancienne Annexe G a été
supprimée. De nouvelles Annexes F, G et H ont été ajoutées;
— des plages d’essai (R) pour l’essai de résistance ont été introduites, en fonction de l’utilisation prévue du
dispositif. Les plages diffèrent par différents facteurs de contrainte, tandis que les niveaux de contrainte
d’essai restent inchangés, à l’exception de l’arrondi et de l’adaptation aux décalages modifiés (voir ci-
dessous);
— les forces d’essai du Tableau 11 ont été ajustées pour P3 et P4;
— une méthode d’analyse de la capacité d’absorption des chocs a été ajoutée, ce qui élimine la difficulté
de décider si un dispositif passe ou échoue au-dessus du niveau de contrainte statique inférieur ultime;

vii
— les essais séparés réalisés sur les verrous de genou sont désormais facultatifs et les méthodes d’essai
relatives aux essais séparés réalisés sur les verrous de genou ont été retirées du document;
— la géométrie d’essai définie dans le présent document est limitée à 150 mm au-dessus du centre de
l’articulation du genou;
— l’Article 21 a été renommé “Conformité au présent document” et la référence à l’étiquetage a été supprimée
du document;
— le Tableau 1, le Tableau 4, le Tableau 5, le Tableau 6, le Tableau 7, le Tableau 8, le Tableau 9, le Tableau 10
et le Tableau 11 ont été mis à jour et les forces ont été ajustées pour les nouveaux décalages unifiés;
— le Tableau B.1, le Tableau B.2, le Tableau B.3 et le Tableau B.4 ont été mis à jour;
— la vitesse de mise en contrainte comprise entre 100 N/s et 10 kN/s est désormais normative.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.

viii
Introduction
Étant donné que la communauté internationale est préoccupée par la nécessité de fournir des prothèses
présentant un degré de sécurité élevé et en raison de la prise de conscience du fait que des normes d’essai
contribueraient à la mise au point de prothèses de meilleure qualité, une série de réunions a été organisée
sous l’égide de la “International Society for Prosthetics and Orthotics” (ISPO). Lors de la dernière réunion
qui s’est tenue à Philadelphie, PA, États-Unis, en 1977, un consensus préliminaire sur les méthodes d’essai
et les valeurs de contrainte requises a été trouvé. Depuis 1979, ces travaux et les suivants ont abouti à
l’élaboration de la série ISO 10328:1996 et aux révisions qui en ont résulté. Les modes opératoires d’essai
pourraient ne pas être applicables aux prothèses ayant des caractéristiques mécaniques différentes de celles
définies dans le cadre du consensus.
En cours d’utilisation, une prothèse est soumise aux actions d’une série de contraintes qui varient chacune
individuellement dans le temps. Les méthodes d’essai spécifiées dans le présent document sont fondées
sur des essais de résistance statiques et cycliques dans le cadre desquels des contraintes combinées sont
produites par l’application d’une force d’essai unique.
Les essais statiques concernent les contraintes les plus sévères produites lors d’une activité quelconque.
Les essais cycliques concernent la marche normale où des contraintes interviennent régulièrement à chaque
pas. Le présent document spécifie les essais de fatigue des composants structuraux. Les essais spécifiés
ne fournissent pas suffisamment de données pour prévoir la durée de vie réelle.
L’évaluation des prothèses de membres inférieurs et de leurs pièces constitutives nécessite des essais sur
le terrain (ou cliniques), en plus des essais de laboratoire spécifiés dans le présent document.
Lorsque la conception d’une partie porteuse de la prothèse est modifiée de manière importante, il convient
dla soumettre à une nouvelle série d’essais en laboratoire et d’essais sur le terrain.
Dans l’idéal, il convient d’intégrer dans le mode opératoire d’évaluation des essais en laboratoire
supplémentaires portant sur le fonctionnement, l’usure et la défaillance, la mise au point de nouveaux
matériaux, les effets induits par l’environnement et les activités de l’utilisateur. Ces essais ne sont couverts
par aucune norme, d’où la nécessité de prescrire des modes opératoires appropriés.

ix
Norme internationale ISO 10328:2026(fr)
Prothèses — Essais portant sur la structure des prothèses de
membres inférieurs — Exigences et méthodes d’essai
AVERTISSEMENT — Le présent document ne peut pas servir de guide pour choisir une prothèse
ou structure prothétique de membre inférieur lors de la prescription d’une prothèse de membre
inférieur. Ignorer cet avertissement peut entraîner des risques pour la sécurité des personnes
amputées.
1 Domaine d’application
Le présent document spécifie des modes opératoires d’essais de résistance statiques et cycliques des
prothèses de membres inférieurs (voir la NOTE 2) qui produisent typiquement des contraintes combinées par
l’application d’une force d’essai unique. Les contraintes combinées dans l’échantillon d’essai correspondent
aux valeurs maximales des composantes des forces qui interviennent normalement à différents moments
au cours de la phase d’appui du cycle de marche.
Le présent document définit les plages d’essai (R) en spécifiant les profils de locomotion pour l’essai
cyclique, en accord avec l’usage prévu. Néanmoins, le concept des essais du présent document permet que
chaque échantillon de prothèse ou structure prothétique de membre inférieur soumis à l’essai développe ses
propres performances lorsqu’il est soumis à une contrainte.
Les essais décrits dans le présent document comprennent:
— les essais principaux statiques et cycliques s’appliquant à tous les composants;
— un essai statique en torsion séparé s’appliquant à tous les composants;
— les essais statiques et cycliques séparés réalisés sur les ensembles cheville-pied et sur les unités de pied
s’appliquant à tous les ensembles cheville-pied en tant que composants, y compris les unités de cheville
ou leurs éléments de jonction et à toutes les unités de pied en tant que composants;
— un essai statique séparé de résistance à la ruptur
...