| 摘要 |
A means of anchoring the stem or other portion of a joint prosthesis inserted within the medullary canal of a bone adjacent a diseased or damaged joint is provided by the present invention, wherein a continuous jacket or a plurality of circumferential rings of elastomeric material are attached to the prosthesis stem. A series of arrays of at least three section of biocompatible rigid material are secured to the elastomeric material at selected intervals along the length of the stem and extend radially outwardly therefrom, such that upon insertion of the prosthesis stem within the medullary canal the elastomeric material is compressed and urges the rigid sections outwardly into secure contact with the adjacent bone to resist dislocation of the prosthesis within the medullary canal.
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