Information on the most widely used ASTM standards within the materials testing industry
ASTM F2077 test method covers the materials and methods for the static and dynamic fatigue testing of intervertebral body fusion devices, spinal implants that are designed to promote arthrodesis at a given spinal motion segment. Intervertebral body fusion cages are among this implant type.
ASTM F2077 Intervertebral body fusion devices tests include:
Axial-Compression
Compression-Shear
Torsion Testing

The standard specifies the testing materials and methods for interbody fusion devices used to promote fusion in a specific spinal segment, aimed at establishing standard principles for the comparison of mechanical properties of non-biological interbody fusion devices. A torsional fatigue test was conducted on the samples at a frequency of 5Hz, R=-1, for 5 million cycles or until sample failure.
UnitedTest UTDS Series Fatigue testing system has precise sine wave control and stable peak, offering professional testing tools and accurate and effective experimental plans (SOP) to assist in mechanical performance analysis.
Main Specificaiton for ASTM F2077 Intervertebral body fusion devices test:
Maximum peak load: 4400N
Peak value of dynamic load:3000N
Peak value of static load: 2100N
Testing machine level: Level 0.5
Load measurement range: 0.4%-100%F.S.
Load measurement accuracy: Better than ± 0.2% of the indicated value (within the load measurement range)
Maximum fatigue loading frequency: 100Hz
Axial travel: 30mm
Displacement resolution: 0.1μm
Test space (upper and lower fixture space): 0-950mm
net weight: About 900kg
External dimensions: About 1000 × 700 × 1800 (mm)
Test Method and Fixtures
Essential Fixture Components:
| Fixture Type | Description | Application |
|---|---|---|
| Axial Compression Fixture | Two metal blocks contoured to device shape | Static axial tests |
| Compression-Shear Fixture | Specialized blocks with offset loading capability | Combined loading tests |
| Torsion Fixture | Rotational clamps with axial constraint | Torsional tests |
| Dynamic Test Fixture | Polyacetal blocks for fatigue testing | Cyclic loading |
| Temperature-Controlled Bath | 37°C ±2° bath for in vivo simulation | Physiological conditions |
Key test parameters:
| Test Type | Loading Rate | Rationale |
|---|---|---|
| Static Axial Compression | ≤25 mm/min | Simulates slow physiological loading |
| Static Torsion | ≤60°/min | Allows for accurate failure mode observation |
| Dynamic Testing | ≤1 Hz | Mimics physiological movement frequencies |
Require More Customized Solutions?