Allograft prosthetic joints and method
First Claim
1. An improvement in a prosthetic implant having a proximal portion for enabling replacement of an element of a natural joint, and a distal portion for securement within a recess in the natural bone adjacent the natural joint, the recess including an internal surface having a transverse extent, the improvement comprising:
- an elongate core extending axially along the distal portion of the prosthetic implant for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface of the recess for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess; and
at least one allograft body along the core, over the external surface of the core, for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface gripping the core to secure the allograft body in place upon the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the recess.
1 Assignment
0 Petitions
Accused Products
Abstract
A prosthetic implant for replacing an element of a natural joint includes an elongate core for securing the implant within natural bone at an implant site adjacent the natural joint, the implant including a allograft affixed to the core for interposition between the core and the natural bone at the implant site. A kit of component parts enables a surgeon to select allograft component parts for assembly with the core, interoperatively, for accommodating conditions encountered at the implant site.
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Citations
29 Claims
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1. An improvement in a prosthetic implant having a proximal portion for enabling replacement of an element of a natural joint, and a distal portion for securement within a recess in the natural bone adjacent the natural joint, the recess including an internal surface having a transverse extent, the improvement comprising:
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an elongate core extending axially along the distal portion of the prosthetic implant for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface of the recess for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess; and at least one allograft body along the core, over the external surface of the core, for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface gripping the core to secure the allograft body in place upon the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the recess. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A kit of component parts for assembling a prosthetic implant, the prosthetic implant having a proximal portion for enabling replacement of an element of a natural joint, and a distal portion for securement within a recess in the natural bone adjacent the natural joint, the recess including an internal surface having a transverse extent, the kit of component parts comprising:
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a first component part having an elongate core extending axially to establish the distal portion of the prosthetic implant for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface of the recess for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess; and at least one second component part in the form of an allograft body to be placed on the core, over the external surface of the core, for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface for gripping the core to secure the allograft body in place upon the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the recess. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. In a method for implanting a prosthetic implant having a proximal portion for enabling replacement of an element of a natural joint, and a distal portion for securement within a recess in the natural bone adjacent the natural joint, the recess including an internal surface having a transverse extent, the steps comprising:
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providing an elongate core extending axially along the distal portion of the prosthetic implant for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface of the recess for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess; providing at least one allograft body for placement along the core, over the external surface of the core; and placing at least the one allograft body for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface for gripping the core to secure the allograft body in place upon the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the recess. - View Dependent Claims (17, 18, 19, 20)
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21. In a method for implanting a femoral hip prosthesis within a recess in the natural bone of a natural femur, the femoral hip prosthesis having a proximal portion for enabling replacement of a femoral head, and a distal portion for securement within the recess, the recess including an internal surface having a transverse extent, the steps comprising:
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providing an elongate core extending axially along the distal portion of the femoral hip prosthesis for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess; providing at least one allograft body for placement along the core, over the external surface of the core; and placing at least the one allograft body for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface for gripping the core to secure the allograft body in place upon the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the femur. - View Dependent Claims (22, 23, 24, 25)
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26. A method for assembling a prosthetic implant having a proximal portion for enabling replacement of an element of a natural joint, and a distal portion for securement within a recess in the natural bone adjacent the natural joint, the recess including an internal surface having a transverse extent, the method comprising:
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providing an elongate core extending axially along the distal portion of the prosthetic implant for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess; providing at least one allograft body for placement on the core, over the external surface of the core; placing at least the one allograft body on the core for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface for confronting the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the recess; and affixing the selected allograft body to the core. - View Dependent Claims (27)
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28. A method for assembling a femoral hip prosthesis having a proximal portion for enabling replacement of a femoral head, and a distal portion for securement within a recess in the natural bone of a natural femur, the recess including an internal surface having a transverse extent, the method comprising:
- providing an elongate core extending axially along the distal portion of the femoral hip prosthesis for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface of the recess for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess;
providing at least one allograft body for placement on the core, over the external surface of the core; placing at least the one allograft body on the core for interposition between the core and the internal surface of the recess, the allograft body having a generally tubular configuration including an inner securement surface for confronting the core and an outer locator surface for engaging the internal surface of the recess to locate the core transversely within the femur; and affixing the selected allograft body to the core. the above amendments and the following discussion. - View Dependent Claims (29)
- providing an elongate core extending axially along the distal portion of the femoral hip prosthesis for reception within the recess in the natural bone, the core having an external surface with a transverse dimension less than the transverse extent of the internal surface of the recess for confronting the internal surface of the recess in the natural bone with the external surface spaced from the internal surface when the core is located within the recess;
Specification