US 12,458,503 B2
Humeral and glenoid articular surface implant systems and methods
Anthony Miniaci, Bentleyville, OH (US); Steven W. Ek, Durham, NH (US); William B. Murphy, Brockton, MA (US); and Timothy H. Brightman, Franklin, MA (US)
Assigned to Arthrosurface Incorporated, West Bridgewater, MA (US)
Filed by Arthrosurface Incorporated, Franklin, MA (US)
Filed on Oct. 24, 2022, as Appl. No. 17/972,351.
Application 17/972,351 is a continuation of application No. 16/817,440, filed on Mar. 12, 2020, granted, now 11,478,358.
Claims priority of provisional application 62/817,497, filed on Mar. 12, 2019.
Prior Publication US 2023/0121757 A1, Apr. 20, 2023
Int. Cl. A61F 2/40 (2006.01); A61B 17/16 (2006.01); A61B 17/17 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/4014 (2013.01) [A61B 17/1684 (2013.01); A61B 17/1778 (2016.11); A61F 2/4081 (2013.01); A61F 2002/30331 (2013.01); A61F 2002/4007 (2013.01); A61F 2002/4022 (2013.01); A61F 2002/4044 (2013.01); A61F 2002/4085 (2013.01); A61F 2220/0033 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for performing a reverse shoulder replacement surgery for a subject, the method comprising:
forming an excision site at a humeral bone of the subject, the excision site comprising an outer ring of bone and a concave socket formed therein; wherein forming the excision site comprises:
(i) using a guide to determine a crown location of an articular surface of the humeral bone;
(ii) inserting a guide pin through the guide and securing the guide pin to the humeral bone, the guide pin establishing a working axis;
(iii) advancing a first reamer over the guide pin along the working axis, the first reamer configured to ream the bone to form an arcuate surface on the humeral bone;
(iv) advancing a second reamer over the guide pin along the working axis, the second reamer configured to remove a portion of the arcuate surface on the humeral bone;
(v) advancing a third reamer over the guide pin along the working axis, the third reamer configured to form the outer ring of bone and the concave socket at the removed portion of the arcuate surface on the humeral bone;
securing a humeral implant to the excision site, the humeral implant comprising:
 a tray including a body defining a bone facing recess and a liner recess, said bone facing recess including a ring surface and a convex surface, wherein the ring surface has a profile substantially corresponding to a profile of the outer ring of bone in the excision site; and wherein said convex surface has a profile substantially corresponding to a profile of the concave socket formed in the excision site;
 a liner including a body defining a load bearing surface and a tray interface surface, said tray interface surface being configured to be at least partially received in said liner recess of said tray so as to couple said liner to said tray, said load bearing surface having a generally concave surface; and
forming an implant site at a glenoid of the subject;
securing a glenoid implant to the implant site, the glenoid implant comprising:
a baseplate including a body defining a bone facing portion and a head facing portion;
the bone facing portion having a profile configured to mate with a profile of the glenoid implant site; and
a head having a convex outer surface and a baseplate interface surface opposite thereto;
the convex outer surface having a shape configured to be at least partially received by the load bearing surface; and
coupling the convex outer surface to the load bearing surface.