Biomechanics
A 62-year-old woman is undergoing total hip arthroplasty revision for periprosthetic bone loss around her cemented stem. The surgeon discusses implant material options for the revision stem, including titanium and cobalt-chrome alloys, and their biomechanical properties that may influence bone remodeling and long-term outcomes. Regarding implant biomechanics:
Mark each as TRUE or FALSE
The elastic modulus (Young's modulus) describes a material's stiffness (stress/strain ratio); cortic...
Stress shielding occurs when an implant alters the normal stress distribution in bone, leading to bo...
Stress shielding increases bone density; cobalt-chrome has a lower modulus than titanium; stainless ...
Load sharing versus load bearing describes how stress is distributed between implant and bone; intra...
Fatigue failure occurs with cyclic loading below ultimate tensile strength; notch sensitivity descri...
Answer the questions to see explanations
Click T (True) or F (False) for each option