1.How would the failure modes shown in Figure 1-1 differ if an obsolete material such as vanadium steel were used to make the hip joint implant (femoral stem)? 2. Discuss the feasibility and...

1.How would the failure modes shown in Figure 1-1 differ if an obsolete material such as vanadium steel were used to make the hip joint implant (femoral stem)? 2. Discuss the feasibility and implications of replacing an entire arm. 3. Discuss the ethical problems associated with using fetal brain tissue for transplantation purposes to treat Parkinson's disease; or fetal bone marrow to treat leukemia.