| http://www.w3.org/ns/prov#value | - The porosity of the foam is over 90%, but it is produced by a method that is in many respects not suitable for producing foams of biocompatible metals typically used in making implants, such as tantalum or titanium. [0015] U.S. Pat. No. 5,926,685 describes a method of forming an implant having a porous outer surface by using an organic binder compound
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