Based on the found clearances, the minimal fabricable
gaps in radial and axial direction were researched to enable the manufacturing of piano hinges.
Ideally, biomaterial has to be biocompatible (inert or active) but essentially, pharmacologically inert, nontoxic, easily fabricable
, sterilisable, stable, non-carcinogenic and economical (1), for e.
It should be non-toxic, fabricable
, sterilizable, and stable during implantation and as required by application.