Calculate elastic section modulus S = I/c (mm³) and plastic section modulus Z = A·y_bar (mm³) for standard and custom cross-sections. Shape factor SF = Z/S: rectangle 1.5, I-beam 1.1-1.15. Bending stress σ = M/S.
2D stress state at a point. All stresses in MPa.
Enter the values for the patient or scenario you are assessing. Calculate elastic section modulus S = I/c (mm³) and plastic section modulus Z = A·y_bar (mm³) for standard and custom cross-sections. Shape factor SF = Z/S: rectangle 1.5, I-beam 1.1-1.15. Bending stress σ = M/S. Use the section modulus result to inform your clinical assessment.