| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joint prosthesis with a positionable head. <P>SOLUTION: The prosthesis for a joint includes a stem 12 for engagement with a bone and a surface 15 defining a bore 16. The prosthesis further includes a joint component 20. The joint component 20 includes bearing surfaces 38, 44 for articulating engagement with at least one of a natural opposing joint component and a prosthetic opposing joint component. The prosthesis further includes a mounting element 30. The mounting element 30 includes a proximal portion for engagement with the joint component 20 and further includes a substantially solid articulating portion 34 having a contiguous periphery. The substantially solid articulating portion 34 is configured to facilitate articulating movement of the substantially solid articulating portion 34 within the bore 16 when the contiguous periphery is not forcefully engaged with the bore, and the substantially solid articulating portion 34 and the bore 16 are configured to fixedly couple the mounting element 30 to the stem 12 when the contiguous periphery is forcefully engaged with the bore 16. <P>COPYRIGHT: (C)2007,JPO&INPIT |
