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Published on: October 12, 2016
Pullout strength of a biodegradable free form osteosynthesis plate
Siegfried Jank1, Petteri Väänänen, Frank R Kloss
1Medical University of Innsbruck, Department of Oral-, Cranio- and Maxillofacial Surgery, Innsbruck, Austria. siegfried.jank@gmx.de
Summary
The Inion Free Form Plate, a new biodegradable option, shows comparable mechanical stability to conventional plates. This biodegradable plate offers a viable alternative for orthopedic fixation, with screw shaft failure being the primary mode.
Area of Science:
- Orthopedic surgery
- Biomaterials science
- Mechanical engineering
Background:
- The Inion Free Form Plate is a novel biodegradable fixation device.
- It allows for screw insertion and subsequent screw head removal or use of a countersink screw.
Purpose of the Study:
- To compare the mechanical properties, specifically pullout strength and failure modes, of the 1.4 mm Inion Free Form Plate against a 2.0 mm conventional plate.
Main Methods:
- Mechanical testing was performed to assess plate pullout strength.
- The Inion Free Form Plate was tested with an Inion OTPS™ 2.0 × 20 mm Screw.
- Failure modes were analyzed and reported.
Main Results:
- No significant differences in mechanical stability were observed between the Free Form Plate and the conventional 4-hole plate.
- Overlapping confidence levels were noted for yield load, first peak load, and maximum load.
- The Free Form Plate with a countersink screw demonstrated the highest stability at maximum load.
Conclusions:
- The 1.4 mm Free Form Plate exhibits comparable mechanical stability to the 2.0 mm conventional plate.
- The primary failure mode observed was screw shaft failure.
- The Inion Free Form Plate is a potential alternative to conventional plates in orthopedic applications.
