surgeonmunir
Bioengineer
I will be grateful for any help. We fix hip replacement parts to the bone using cement. This involves fixing a stainless steel component to the hollow of the bone using a grout which is cement. The stem is wedge shaped and has a smooth surface. The problem with this design is that with minimal trauma it splits the bone. I think this must happen because the hoop stresses are not equally directed in a cross section as well as along the length of the hollow of the bone because the ratio of the wedge taper is not proportional and there is quite a sudden decrease in the taper initially followed by a very slow decrease in the thickness.
I would like to know a method of proving this hypothesis and help in designing something that enables a more equal distribution of stresses. Pictures attached for understanding.
I would like to know a method of proving this hypothesis and help in designing something that enables a more equal distribution of stresses. Pictures attached for understanding.