Stemless shoulder implant

Abstract

The present disclosure provides a shoulder prosthesis. The shoulder prosthesis includes a glenoid component, a humeral component, and an articulation component. The glenoid component includes a glenoid body having a proximal side and a distal side, the distal side shaped to engage with a resected portion of a glenoid cavity. The humeral component includes a humeral body having a proximal side and a distal side, the distal side shaped to engage with a resected portion of a humerus. The articulation component is positionable between the proximal side of the glenoid component and the proximal side of the humeral component, the articulation component configured to be maintained between the glenoid and humeral components, after implantation, by at least one of a deltoid muscle and a rotator cuff.

What is claimed is: 
     
         1 . A method for installing a shoulder prosthesis, the method comprising:
 forming an incision in an axilla region of a patient;   resecting, through the incision, a portion of a humerus;   resecting, through the incision, a portion of a glenoid cavity;   inserting a humeral component through the incision, the humeral component including a bone contacting surface and an opposing articular surface;   attaching the bone contacting surface of the humeral component to the resected portion of the humerus, wherein the bone contacting surface of the humeral component is shaped to mate with the resected portion of the humerus;   inserting a glenoid component through the incision, the glenoid component including a bone contacting surface and an opposing articular surface;   attaching the bone contacting surface of the glenoid component to the resected portion of the glenoid cavity, wherein the bone contacting surface of the glenoid component is shaped to mate with the resected portion of the glenoid cavity; and   inserting an articulation component through the incision and between the articular surfaces of the humeral and glenoid components, wherein the articulation component is held between the humeral and glenoid components by at least a deltoid muscle and a rotator cuff muscle.   
     
     
         2 . The method of  claim 1 , wherein attaching the bone contacting surface of the humeral component to the resected portion of the humerus comprises applying bone cement to at least one of the bone contacting surface and the resected portion of the humerus. 
     
     
         3 . The method of  claim 1 , wherein attaching the bone contacting surface of the glenoid component to the resected portion of the glenoid cavity comprises applying bone cement to at least one of the bone contacting surface and the resected portion of the glenoid cavity. 
     
     
         4 . The method of  claim 1 , wherein attaching the bone contacting surface of the humeral component to the resected portion of the humerus comprises inserting a bone fastener through the humeral component and into the humerus. 
     
     
         5 . The method of  claim 1 , wherein attaching the bone contacting surface of the glenoid component to the resected portion of the glenoid cavity comprises inserting a bone fastener though the glenoid component and into the glenoid cavity. 
     
     
         6 . The method of  claim 1 , wherein the bone contacting surfaces of the humeral and glenoid components are at least partially formed from a porous metal that facilitates bone ingrowth after implantation of the humeral and glenoid components.