Shoulder Prosthesis with Vault-Filling Structure having Bone-Sparing Configuration

A shoulder prosthesis, comprising:

• a metallic vault-filling component defining a bearing-facing surface and having a first coupling component, said metallic vault-filling component including (i) a metallic vault-filling first portion defining a first part of said bearing-facing surface, and (ii) a metallic projecting second portion projecting from said metallic vault-filling first portion so as to define a second part of said bearing-facing surface, said metallic vault-filling first portion and said metallic projecting second portion defining a bone space therebetween;
• and
• a polymeric bearing component defining a bearing surface and having a second coupling component configured to cooperate with said first coupling component to couple said polymeric bearing component to said metallic vault-filling component,
• wherein said metallic projecting second portion of said metallic vault-filling component further defines a scapula-facing surface,
• wherein said metallic vault-filling first portion of said metallic vault-filling component further defines (i) a first lateral surface extending from said scapula-facing surface, and (ii) a second lateral surface extending from said first part of said bearing-facing surface, and
• wherein said first lateral surface and said second lateral surface taper towards each other in a direction extending away from said bearing-facing surface.

A shoulder prosthesis, comprising:

• a vault-filling component defining a bearing-facing surface and having a first coupling component, said vault-filling component including (i) a vault-filling first portion defining a first part of said bearing-facing surface, and (ii) a projecting second portion projecting from said vault-filling first portion so as to define a second part of said bearing-facing surface, said vault-filling first portion and said projecting second portion defining a bone space therebetween,
• a bearing component defining a bearing surface and having a second coupling component configured to cooperate with said first coupling component to couple said bearing component to said vault-filling component;
• and
• wherein said bearing component possesses a first maximum axial height of at least 3.0 mm,
• wherein said vault-filling first portion possesses a second maximum axial height of at least 15.0 mm,
• wherein said projecting second portion possesses a third maximum axial height of at least 1.0 mm, and
• wherein said projecting second portion extends from said vault-filling first portion for a maximum distance of at least 2.0 mm.