Where a femur breaks in a fall

The brief

Model fracture risk in a patient-specific femur under fall-impact loading.

What I did

• Calculated von Mises stress and displacement across the cortical bone, not just the peak value.
• Varied both the impact angle and how the bone was fixed, since real falls don’t all load the femur the same way.
• Gave cortical and cancellous bone different material properties, to compare how each responds.
• Checked how accurate the material properties I used were.

Result

The model placed the critical failure region at the femoral neck, consistent with clinically observed fracture patterns. Graded 100%.