ASTM F2267-24 PDF

Full title and description

ASTM F2267-24 — Standard Test Method for Measuring Load-Induced Subsidence of Intervertebral Body Fusion Device Under Static Axial Compression. This specification defines materials, test-fixture arrangements, loading procedures and measurement guidelines for quantifying axial load–induced subsidence (sinking into simulated vertebral bodies) of non‑biologic intervertebral body fusion devices (spinal cages) under static axial compression.

Abstract

This test method provides a standard, repeatable static axial compressive test to measure and compare the tendency of intervertebral body fusion devices to cause subsidence into simulated vertebral bodies. The purpose is comparative mechanical evaluation of device designs (not to directly predict in‑vivo clinical performance). The standard specifies test block materials and densities, fixture geometry, loading rate and positioning, measurement of test block deformation and the method for determining subsidence values for reporting and comparison.

General information

• Status: Active standard (current edition).
• Publication date: April 15, 2024.
• Publisher: ASTM International.
• ICS / categories: 11.040.40 — Implants for surgery, prosthetics and orthotics (spinal implants / surgical implants).
• Edition / version: F2267-24 (2024 edition).
• Number of pages: 8 pages (typical published length for this edition).

Scope

The standard covers materials and methods for static axial compressive subsidence testing of non‑biologic intervertebral body fusion devices (spinal implants designed to promote arthrodesis). It establishes a comparative test procedure — specifying simulated vertebral test blocks (material and density), mounting/fixturing, load application (static axial compression), measurement of block deformation and calculation/reporting of subsidence — to enable mechanical comparison between device designs and iterations. The method does not set clinical performance thresholds and does not attempt to fully reproduce the complex in vivo loading environment.

Key topics and requirements

• Definition of suitable simulated vertebral test blocks (materials, density ranges) to represent different bone qualities.
• Fixture geometry and implant positioning rules to ensure repeatability across tests.
• Specified static axial load type, loading rate and test sequence for subsidence evaluation.
• Methods for measuring deformation of test blocks and determining device subsidence (calculation and reporting conventions).
• Guidance on sample preparation, number of specimens and data reporting (mean, standard deviation, test conditions).
• Notes on limitations: static test only, comparative intent, and safety/environmental considerations for test operation.

Typical use and users

ASTM F2267-24 is used by spinal implant manufacturers, independent medical device testing laboratories, design and R&D teams, regulatory affairs specialists preparing technical documentation (e.g., for submissions), and quality/verification engineers. Typical uses include preclinical comparative testing of cage geometries and surface treatments, design verification, material selection studies, and benchmarking against prior device versions.

Related standards

Commonly referenced standards and guidance used alongside F2267 include ASTM F2077 (Test Methods for Intervertebral Body Fusion Devices), ASTM F1717 (Spinal implant constructs — vertebrectomy/corpectomy model), ASTM F1798 (interconnection mechanisms and subassemblies), ASTM F2193 (components used in spinal fixation), ASTM F3631 (intra‑operative durability of intervertebral body fusion devices), and international standards such as ISO 12189 (fatigue test methods for spinal implant assemblies). These documents together cover broader static/dynamic mechanical characterization and related test methods for spinal implants.

Keywords

intervertebral body fusion device; spinal cage; subsidence; static axial compression; simulated vertebral block; UHMWPE test block; test method; implant mechanical testing; spinal implant comparison; ASTM F2267-24.

FAQ

Q: What is this standard?

A: ASTM F2267-24 is a standardized laboratory test method for measuring load‑induced subsidence (sinking into bone analogs) of intervertebral body fusion devices under static axial compression, intended for comparative mechanical evaluation of spinal cages.

Q: What does it cover?

A: It specifies test block materials and densities, fixture and implant positioning, load application and rate, measurement of test block deformation, and procedures for calculating and reporting subsidence values. It is a static, in‑vitro comparative method and not a clinical performance standard.

Q: Who typically uses it?

A: Spinal implant manufacturers, independent mechanical testing labs, R&D and design engineers, quality assurance teams and regulatory professionals use this standard to compare device designs, perform verification testing and support product development or submissions.

Q: Is it current or superseded?

A: The current edition is F2267-24, published April 15, 2024. This edition supersedes earlier editions (for example the 2022 edition) and is the active standard for the subsidence test method at the time of publication.

Q: Is it part of a series?

A: It sits within the suite of ASTM standards addressing spinal devices and mechanical testing (e.g., F2077, F1717, F1798, F2193 and related documents). Those standards together provide complementary static and dynamic test methods used for design characterization and regulatory evaluation of spinal implants.

Q: What are the key keywords?

A: Key keywords are intervertebral body fusion device, subsidence, static axial compression, spinal cage, simulated vertebral block, mechanical test method, implant comparison, ASTM F2267-24.