→It can be used to measure the axial tensile force required to fail or remove a bone screw from a defined material.
→Comply with standard: ASTM F543 Standard specification and test methods for metallic medical bone screws.
→Used to measure the torque required to drive a bone screw into a standard material to test the insertion and removal torque.
→Place the specimen in the test fixture and drive the specimen into the test block, using the appropriate size and configured screwdriver bit, by applying a torsional force at a rate of 1 to 5 r/min, to the head of the specimen with the motor-driven torque wrench. The insertion torque is the maximum readingrecorded during the initial four revolutions of the specimen. The removal torque is measured by reversing the direction of rotation and recording the maximum torque recorded during the four revolutions required to remove the screw from the test block.
