Interfragmentary Modulus

Problem statement: Young’s modulus and interfragmentary strain (ε_IF) are the important parameters in bone-plate testing and design. But Young’s modulus is not suitable when we use with ε_IF in the bone-plate testing. Approach: This research proposed a study on the Interfragmentary Modulus (IM) as the new parameter for the bone-plate testing. Results: The results from the FEM show that the relations of the interfragmentary stress (σ_IF) and interfragmentary strain are linear for all cases with the condition of the DCP and the screws material properties are linear and isotropic materials. Conclusion: IM are the constant values and we can use IM in the bone-plate testing.