It is very difficult to match the properties of a human bone.  The structure itself is not even remotely close to that of a metal in most cases and the bonding is very covalent opposed to metallic bonding. 

Certain metals are being tested more and more to test engineers hypothesis about their structures.  Iron alloys are beginning to be tested with certain fabrication techniques to produce properties that match that of bone.  Also, titanium alloys have been mixed with other metallic alloys to produce a Young's modulus approximately equal to that of bones. 

It is very exciting that materials engineers have created a metal that has properties similar to that of a carbon based protein.  The complexity of DNA has thus been derived into that of a simple metallic structure.  Granted, they are not exact measures, but similar nonetheless to a point where it can be used to create a more body friendly biomaterial.