ASTM F383 and F1264 Intramedullary rods*
We offer you a characterization of the design and mechanical function of intramedullary nails according to the test standards ASTM F383 and F1264.
- Static four-point bending test
The intramedullary nail is clamped into the test device and loaded until a sudden decrease in force occurs (fracture or flow of the material). During the test, a force-displacement curve is recorded, which is evaluated with regard to bending stiffness and flexural strength.
- Dynamic four-point bending test
The intramedullary nail is clamped into the test device and loaded over a defined number of cycles. The load should be 75, 50 or 25% of the flexural strength and applied at a frequency of 1-10 Hz. Firstly, an M-N diagram (maximum bending torque versus number of cycles) is created and the fatigue strength is determined.
- Static torque test
The intramedullary nail is clamped into the test device and a constant axial force (5-10 N) is applied. A torsion of 5 ° is then applied at a constant rate of 5 °/min. A torque-angle curve is recorded. The linear slope of the curve then corresponds to the torsional stiffness.
- Dynamic four- or three-point bending test of locking screws
The dynamic bending test of the locking screw is carried out according to the test of the intramedullary nails.
In addition to the mechanical characterization of the bone plates, we would like to advise you about the correct marking, packaging and the contents of the manufacturer information to be attached.
*We offer this testing service as part of our accredited scope.