Components for Use in a Universal Shoulder Prosthesis System
A universal shoulder prosthesis system includes and one or more modular components that are exchangeable between ta-TSR and r-TSR. In at least one embodiment, the humeral components that contact the glenoid components include polyethylene while the glenoid components that contact the humeral components are all metal. An example of the modular components for ta-TSR are a glenoid modular component ( 200 ) having a concave cavity ( 212 ) and a humeral modular component ( 300 ) includes an outer shell ( 310 ) and an inner head ( 320 ) that fits into the outer shell ( 310 ). An example of the modular components for r-TSR are a glenosphere ( 516 ), which is the glenoid modular component ( 500 ), having a 10 degree inferior tilt built-in and a humeral cup ( 600 ), which is the humeral modular component, with a replaceable shell ( 650 ) that partially sits within a base ( 610 ), which optionally may include metal.
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14 . A humeral modular component for use in a modular shoulder prosthesis system having a baseplate with or without notches and/or attachment points, the humeral modular component comprising:
a humeral cup base having
a receiving cavity,
a plug extending away from said base; and
a humeral cup shell configured to be removably inserted into the receiving cavity of said humeral cup base, said shell including a base having a curved cavity framed by a flat surface.
15 . The humeral modular component according to claim 14 , wherein said base includes a wall extending up to define the receiving cavity and said wall includes notches extending down from a top of the wall.
16 . The humeral modular component according to claim 15 , wherein said wall includes a beveled or rounded interior edge and/or a beveled or rounded exterior edge on its top.
17 . A humeral modular component for use in a modular shoulder prosthesis system having a baseplate with or without notches and/or attachment points, the humeral modular component comprising:
a humeral cup base having
a receiving cavity,
a plug extending away from said base; and
a humeral cup shell configured to be removably inserted into the receiving cavity of said humeral cup base, said shell including a base, a curved cavity formed in said base, and a wall extending down from a surface of said base opposite said curved cavity, said wall is inset in from an outer peripheral surface of said base.
18 . The humeral modular component according to claim 17 , wherein said wall including a plurality of protrusions for engaging a groove around an interior bottom of the receiving cavity of said humeral cup base, said protrusions are evenly spaced from each other.
19 . The humeral modular component according to claim 18 , wherein each of said protrusions include a free end having a hook for engaging the groove of said humeral cup base, said protrusions and/or said wall are sufficiently flexible to allow for insertion of the shell into said receiving cavity of said humeral cup base.
20 . The humeral modular component according to claim 14 , wherein said flat surface of said base includes a beveled or rounded interior edge and/or a beveled or rounded exterior edge on its top.
21 . The humeral modular component according to claim 14 , wherein said flat surface is inclined from its exterior periphery towards said curved cavity.
22 . The humeral modular component according to claim 14 , wherein the surface area of said curved cavity is greater than a surface area of said flat surface.
23 . The humeral modular component according to claim 14 , wherein said curved cavity has a variating surface with a non-uniform level of curvature over the surface of said curved cavity or said curved cavity is concave.
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25 . The humeral modular component according to claim 14 , wherein said humeral cup base is made from Co—Cr and said shell includes polyethylene or a related articulating material or Vitamin E HDPE.
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27 . A modular shoulder prosthesis system comprising:
a baseplate having
a base with a plurality of attachment holes passing therethrough, and
a central stem extending from a bottom surface of said base and axially centered with one of said plurality of attachment holes;
a modular component configured to be removably attached to said base, said modular component including a glenosphere with an optional inferior tilt of approximately 10 degrees;
a humeral base that is either a humeral stem or a second baseplate, said humeral base having a receiving cavity extending in from one face; and
a humeral modular component configured to cooperate with said modular component, said humeral modular component according to claim 14 .
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44 . A modular component for use in a modular shoulder prosthesis system having a baseplate with or without notches and/or attachment points, the modular component comprising:
a base having a cavity configured to receive a hemispheric humeral head or a prosthetic replacement of same, and said cavity is framed by a flat surface, and
a plug extending from a surface of said base opposite said cavity.
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46 . The modular component according to claim 44 , wherein said flat surface is inclined from its exterior periphery towards said cavity.
47 . The modular component according to claim 44 , wherein a surface area of said cavity is greater than a surface area of said flat surface.
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49 . The modular component according to claim 44 , wherein said base having a beveled or rounded interior edge around said cavity and/or a beveled or rounded top exterior edge.
50 . The modular component according to claim 44 , wherein said cavity is a variating surface with a non-uniform level of curvature over its surface or said cavity includes a concave surface.
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52 . The modular component according to claim 44 , wherein said plug is a Morse taper central plug.
53 . The modular component according to claim 44 , wherein said modular component includes Cobalt-Chromium, TiN coated Ti5Al4V, or metal.
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55 . A modular shoulder prosthesis system comprising:
a baseplate having
a base with a plurality of attachment holes passing therethrough, and
a central stem extending from a bottom surface of said base and axially centered with one of said plurality of attachment holes;
a modular component configured to be removably attached to said base, said modular component according to claim 44 ;
a humeral base that is either a humeral stem or a second baseplate, said humeral base having a receiving cavity extending in from one face; and
a humeral modular component configured to cooperate with said modular component, and
wherein said any baseplate is capable of attachment to different modular components and said humeral base is capable of attachment to different humeral modular components to facilitate a future reverse total shoulder replacement with a change in the modular component and change in the humeral modular component.
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