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  • Ceramic-ceramic articulation surface implants
    Patent number: 8123812
    Abstract: A prosthesis for articulation (e.g., hip or joint prosthesis) is provided, which includes a pair of articulation components respectively defining a pair of articulation surfaces movably engageable with each other. In some embodiments, each of the articulation surfaces is formed from a biocompatible ceramic (e.g., doped silicon nitride ceramic) having a flexural strength greater than about 700 Mega-Pascal (MPa) and a toughness greater than about 7 Mega-Pascal root meter (MPam0.5).
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: February 28, 2012
    Assignee: Amedica Corporation
    Inventor: Ashok C. Khandkar