A wrist prosthesis system to replace at least a portion of a bone of a wrist of a patient. The system includes a carpal implant to replace at least a portion of a carpal bone of a carpal complex of the patient. The carpal implant includes a base and an augment that replaces at least a portion of the...http://www.google.de/patents/US20090204224?utm_source=gb-gplus-sharePatent US20090204224 - Method And Apparatus For Wrist Arthroplasty
