Pullout strength of a biodegradable free form osteosynthesis plate
Copyright policy )Pullout strength of a biodegradable free form osteosynthesis plate
The Inion(®) Free Form Plate is a newly designed biodegradable plate. After drilling through the plate and tapping, a biodegradable screw can be inserted, followed by removal of the screw head. As an alternative a countersink screw can be used. Aim of the study was to compare the mechanical properties of the 1.4 mm Free Form Plate with the 2.0 mm conventional shaped plate. Mechanical testing of the plate pullout strength was conducted for the Inion(®) Free Form Plate fixed with an Inion OTPS™ 2.0 × 20 mm Screw. In addition, the failure mode was reported. Overlapping confidence levels were found with regard to the yield load, first peak load and maximum load, when comparing the Free Form Plate and the conventional 4-hole plate. The Free Form Plate fixed with a screw with head and countersink showed the highest stability at maximum load. The results of the mechanical stability testing showed no significant differences between the tested plates. The main failure mode was a failure of the screw shaft. The results of the current investigation imply that the 1.4 mm Free Form Plate could be used as an alternative to the 2.0 mm conventional shaped plate.
- Tampere University Finland
- University of Helsinki Finland
- University of Eastern Finland Finland
- Kuopio University Hospital Finland
- Innsbruck Medical University Austria
Equipment Failure Analysis, Fracture Fixation, Internal, Absorbable Implants, Bone Screws, Materials Testing, Equipment Design, Stress, Mechanical, Bone Plates, Elasticity, Biomechanical Phenomena
Equipment Failure Analysis, Fracture Fixation, Internal, Absorbable Implants, Bone Screws, Materials Testing, Equipment Design, Stress, Mechanical, Bone Plates, Elasticity, Biomechanical Phenomena
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