Answer:
Infection and extrusion are the 2 main problems associated with silaistic frameworks.
Medpore - porous polyethylene pivoting helix framework for the reconstruction of the auricle. The polyethylene framework is composed of two distinct components: a curved shape that represents the helical rim which pivots around a base component. This framework is covered with a temporoparietal fascial flap and a skin graft that is chosen to match the adjacent area. The porous frame work becomes rapidly vascularized with soft tissue ingrowth and collagen deposition.
Osseointegrated implants or the Branemark prosthesis (extremely expensive) is a method by which a titanium framework is permanantly affixed to the mastoid bone (thus the osseointegrated part) and the ear is draped over it like a coat on a coat hanger.