| http://www.w3.org/ns/prov#value | - itanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts. [0052] Depending on the patient's disease state, the condition of the patient's natural facet joint-including the facet joint's strength, location and orientation-may not be acceptable.
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