prov:value
| - itanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts. [0060] In one embodiment, the natural caudal facet surface has been removed, and fixation element 56 attaches prosthesis 50 to a vertebra 70 via a pedicle in an orientation and position that places bearing surface 54 in approximately the same
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