Testing of Bone Screws to ASTM F543 and ISO 6475
- Testing of bone screws to ASTM F543 refers to four mechanical tests in simplified clinical use. The primary properties involved include torsional strength, insertion and removal behavior, pull-out strength and self-tapping performance of medical bone screws.
- The methods specify a multi-axial test in which a constant preload is applied to the bone screw and a superimposed torsional motion is introduced. The static ZwickRoell testing machines allow easy, operator-friendly implementation of this sequence of motions despite complex control requirements.
- The optional testXpert® Master Test Program, "Evaluation of medical tests," provides automatic, standard-compliant evaluation of the test. These results are used in quality control or technical comparison of individual screw forms.