Biomechanics
A 55-year-old woman sustains a periprosthetic femur fracture at the tip of a well-fixed cementless femoral stem. The fracture occurs at the exact location where the stem ends. Regarding stress concentration and stress risers in orthopaedic implants:
Mark each as TRUE or FALSE
A stress concentration (stress riser) is a localized region where stress is significantly higher tha...
The stress concentration factor (Kt) is the ratio of maximum local stress to nominal (average) stres...
Empty screw holes in bone have no effect on bone strength; stress concentration only applies to meta...
The tip of an intramedullary device creates a stress concentration at the bone-implant interface; th...
In implant design, stress concentrations are minimized by using smooth transitions, rounded corners,...
Answer the questions to see explanations
Click T (True) or F (False) for each option