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[Steel or titanium for osteosynthesis : A mechanobiological perspective]
M Heyland1, G N Duda2, S Märdian3
1Julius Wolff Institut, Campus-Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, Institutsgebäude Süd, 13353, Berlin, Deutschland.
Der Unfallchirurg
|January 6, 2017
Summary
Optimizing fracture healing involves controlling mechanical stimulation through implant design. Flexible titanium plates with specific configurations enhance mechanobiological stimulation for better bone healing outcomes.
Area of Science:
- Orthopedic biomechanics
- Biomaterials science
- Bone healing biology
Background:
- Fracture stabilization implants create mechanical constructs influencing bone healing.
- Steel and titanium are primary materials for orthopedic implants due to high mechanical demands.
Purpose of the Study:
- To discuss mechanobiological stimulation ranges for mechanotherapy.
- To analyze the impact of plate stiffness, material selection, and properties on stimulation.
Main Methods:
- Overview of steel and titanium material properties.
- Finite element modeling of plate osteosynthesis for long bone fractures.
- Evaluation of interfragmentary movement (IFM) as a measure of mechanobiological stimulation with varying plate working length (PWL).
Main Results:
- Interfragmentary movement (IFM) varies with osteosynthesis material and configuration.
- Plate working length (PWL) has a greater influence on IFM than material type.
- Both material and PWL influence diminish significantly in bridged fracture situations.
Conclusions:
- Appropriate mechanobiological environment is crucial for secondary fracture healing.
- Osteosynthesis material, configuration, fracture type, and load influence this environment.
- Flexible titanium plates with specific configurations can enhance mechanobiological stimulation.
