Implant components and methods

Abstract

Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. Mounting members include, for example, flanges, blades, hooks, and plates. In some embodiments, the orthopedic attachments may be adjustably positionable about the base member or other attachments, thereby providing modularity for assembling and implanting the device, and various securing and/or locking mechanisms may be used between the components of the implant.

1 . An implantable orthopedic device, comprising:
 an implant having a porous surface defining a plurality of pores sized to accommodate bone-ingrowth into the implant, the implant further including a plurality of protrusions extending from the porous surface and which rise above the porous surface;   wherein the plurality of protrusions are configured to frictionally engage a bone surface without interfering with bone ingrowth into the plurality of pores;   wherein the implant is a metallic implant; and   wherein the implant comprises a surface profile that is formed using a rapid manufacturing process.   
     
     
         2 . The device of  claim 1 , wherein the rapid manufacturing process comprises a 3D printing process. 
     
     
         3 . The device of  claim 1 , wherein the rapid manufacturing process comprises a selective laser sintering process. 
     
     
         4 . The device of  claim 1 , wherein the protrusions are blunt. 
     
     
         5 . The device of  claim 1 , wherein the protrusions rise above the porous surface to a height between about 50 μm and about 2,000 μm. 
     
     
         6 . The device of  claim 5 , wherein the height is between about 100 μm and about 1,100 μm. 
     
     
         7 . The device of  claim 1 , wherein the implant comprises a solid non-porous portion. 
     
     
         8 . The device of  claim 7 , wherein the solid non-porous portion of the implant comprises a solid outer surface portion. 
     
     
         9 . The device of  claim 8 , wherein the solid outer surface portion is configured for articulation with another implant component. 
     
     
         10 . The device of  claim 1 , wherein the protrusions occupy approximately 10% to approximately 60% of the porous surface. 
     
     
         11 . The device of  claim 1 , wherein the pores have a size of approximately 50 microns to 1000 microns. 
     
     
         12 . The device of  claim 1 , wherein the protrusions have a concentration between about 0.25 protrusions per square millimeter and about 6 protrusions per square millimeter. 
     
     
         13 . An implantable orthopedic device, comprising:
 an implant having a porous surface defining a plurality of pores sized to accommodate bone-ingrowth into the implant, the implant further including a plurality of protrusions extending from the porous surface and which rise above the porous surface; wherein the plurality of protrusions are configured to frictionally engage a bone surface without interfering with bone ingrowth into the plurality of pores;   wherein the implant comprises a surface profile that is formed using a rapid manufacturing process; and   wherein the protrusions rise above the porous surface to a height between about 50 μm and about 2,000 μm.   
     
     
         14 . The device of  claim 13 , wherein the protrusions are blunt. 
     
     
         15 . The device of  claim 13 , wherein the height is between about 100 μm and about 1,100 μm. 
     
     
         16 . The device of  claim 13 , wherein the implant comprises a solid non-porous portion. 
     
     
         17 . The device of  claim 16 , wherein the solid non-porous portion of the implant comprises a solid outer surface portion. 
     
     
         18 . The device of  claim 17 , wherein the solid outer surface portion is configured for articulation with another implant component. 
     
     
         19 . The device of  claim 13 , wherein the protrusions occupy approximately 10% to approximately 60% of the porous surface. 
     
     
         20 . The device of  claim 13 , wherein the pores have a size of approximately 50 microns to 1000 microns. 
     
     
         21 . The device of  claim 13 , wherein the protrusions have a concentration between about 0.25 protrusions per square millimeter and about 6 protrusions per square millimeter. 
     
     
         22 . An implantable orthopedic device, comprising:
 an implant having a porous surface defining a plurality of pores sized to accommodate bone-ingrowth into the implant, the implant further including a plurality of protrusions extending from the porous surface and which rise above the porous surface;   wherein the plurality of protrusions are configured to frictionally engage a bone surface without interfering with bone ingrowth into the plurality of pores;   wherein the protrusions rise above the porous surface to a height between about 50 μm and about 2,000 μm; and   wherein the implant comprises a surface profile that is formed using a selective laser sintering process