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Method and apparatus for removing pre-placed prosthetic joints and preparing for their replacement

  • US 4,919,153 A
  • Filed: 10/11/1988
  • Issued: 04/24/1990
  • Est. Priority Date: 10/11/1988
  • Status: Expired due to Term
First Claim
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1. A method for removing a prosthetic appliance secured in place by a mantle of hardened methylmethacrylate cement received within a bone cavity and conditioning the bone cavity for receipt of a new appliance, said method comprising:

  • (a) pulling the appliance from the mantle of hardened cement to leave a cement cavity within the mantle;

    (b) injecting a fluid mass of methylmethacrylate cement into the cement cavity;

    (c) inserting a post having an irregular exterior surface into the fluid mass of methtylemethacrylate cement;

    (d) permitting said fluid mass of methylemethacrylate cement to harden and bond to the post and the hardened mantle; and

    ,(e) applying tension to the post to pull the post and the bonded mantle of methylemethacrylate cement from the bone cavity.

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