Back to results
US 2026/0130768 A1Published application
Talar implant
AssigneeWright Medical Technology, Inc.
InventorMeghan KUBACKI
Life of this patent
Estimating the term…
Abstract
Provided is a total talar replacement prosthesis that has a metallic body shell and a metallic or biologic core, where the metallic body shell includes one or both of a removable calcaneus attachment and a removable navicular attachment. The attachments, when removed, exposes a respective calcaneus-facing surface or a navicular-facing surface that can enhance fusion to the respective bones, calcaneus and/or navicular.
Claims28
A total talar replacement prosthesis comprising:
- a metallic shell that encloses a core, wherein the metallic shell includes a navicular-facing surface that defines a discontinuity sized and arranged so as to expose a portion of the core;
- and
- a navicular attachment configured to be removably attached to the navicular-facing surface so as to be positioned relative to the discontinuity to thereby cover the exposed portion of the core by at least partially filling the discontinuity, wherein the navicular-facing surface of the metallic shell further defines a plurality of recesses each having a ridge along a perimeter and the navicular attachment includes at least one stud that is sized and positioned so as to engage a correspondingly positioned and sized one of the plurality of recesses such that the at least one stud forms a snap-fit by engagement with the ridge at the perimeter of the correspondingly positioned and sized one of the plurality of recesses.
A total talar replacement prosthesis comprising:
- a shell that partially encloses a core, wherein the shell includes a navicular-facing surface defining a discontinuity that exposes a first portion of the core and a calcaneus-facing surface defining a discontinuity that exposes a second portion of the core;
- a navicular attachment configured to be removably attached to the navicular-facing surface and to removably cover at least a portion of the exposed first portion of the core by at least partially filling the discontinuity;
- and
- a calcaneus attachment configured to be removably attached to the calcaneus-facing surface and to removably cover at least a portion of the exposed second portion of the core by at least partially filling the discontinuity, wherein at least one of the first and second portions includes at least one threaded blind hole oriented to receive a bone screw advanced into the exposed core to generate compression across a fusion interface.
1 more element
A method of implanting a total talar replacement prosthesis, the method comprising:
- removing any remaining talar bone from a patient's ankle;
- removing a side attachment corresponding to either a talo-navicular fusion or a talo-calcaneus fusion to expose a discontinuity that exposes a portion of the core at at least one of a navicular-facing surface and a calcaneus-facing surface;
- preparing the corresponding bone surface for fusion;
- positioning the total talar replacement prosthesis so that the exposed core portion directly contacts at least one of the navicular and calcaneus;
- and
- advancing a bone screw from at least one of the navicular and calcaneus into at least one threaded blind hole provided in the exposed portion of the core to thereby generate compression across a fusion interface.
3 more elements
Dependencies are inferred from the claim text.