Implants, systems and methods of using the same
Implants, device, systems and methods for replacing an articulation surface in a joint, for example, a reverse glenoid implant with a baseplate, a central screw, a peripheral screw, a modular taper, and a post. Methods for implanting the glenoid implant are also disclosed.
1. A method of using an implant, the method comprising:
obtaining the implant;
surgically exposing and resecting a desired bone;
inserting a baseplate into the bone, the baseplate having a plurality of arcuate-shaped keels extending away from a bottom surface of the baseplate and positioned circumferentially around the bottom surface of the baseplate, wherein each of the plurality of arcuate-shaped keels (i) has a proximal edge that abuts the bottom surface of the baseplate and an opposite distal-most edge, and (ii) is tapered downwardly such that its distal-most edge is shorter than its proximal edge;
inserting a central screw through the baseplate into the bone;
positioning a glenosphere relative to the baseplate, wherein a top surface of the baseplate is directly adjacent to a bottom surface of the glenosphere;
inserting a post through the glenosphere; and
threading the post into a recess of the central screw.
2. The method of claim 1 , further comprising:
inserting a peripheral screw through one of a plurality of peripheral bores into the bone.
3. The method of claim 1 , wherein the baseplate and the central screw are pre-assembled as a single unit and inserted into an implant as a single unit.
4. The method of claim 1 , further comprising:
screwing a coupling member into a central bore of the baseplate; and placing the glenosphere onto the coupling member;
wherein screwing the coupling member into a central bore of the baseplate, comprises:
threadingly connecting the coupling member to the central bore of the baseplate.
5. The method of claim 4 , wherein placing the glenosphere onto the coupling member comprises:
disposing the glenosphere atop the coupling member, wherein an exterior of the coupling member and a distal tapered portion of a glenosphere bore form a mechanical taper connection.
6. The method of claim 2 , wherein the implant comprises:
the baseplate, comprising:
the central screw extending through the central bore of the baseplate;
a coupling member engaging a portion of the central bore in the baseplate; the glenosphere coupled to the coupling member;
the post extending through the glenosphere, the coupling member and into the central screw; and
at least one peripheral screw received within a plurality of peripheral bores of the baseplate.
7. The method of claim 6 , wherein the central screw further comprises:
a head portion;
a proximal non-threaded section extending away from a second end of the head portion;
a distal threaded section extending away from a second end of the proximal non-threaded section; and
a recess extending into the central screw from a first end through the head portion and into the proximal non-threaded section.
8. The method of claim 7 , wherein the recess comprises:
a first section extending from the first end of the central screw towards the second end; and
a second portion extending from a second end of the first section to a bottom of the recess, and wherein the second portion is threaded.
9. The method of claim 8 , wherein the central bore of the baseplate further comprises:
a proximal interior threaded section extending from a first end of the baseplate toward the second end; and
a distal non-threaded section extending from the proximal interior threaded section to the second end of the baseplate.
10. A method of using an implant, comprising:
obtaining the implant, comprising:
a baseplate, the baseplate having a plurality of arcuate-shaped keels extending away from a bottom surface of the baseplate and positioned circumferentially around the bottom surface of the baseplate, wherein each of the plurality of arcuate-shaped keels (i) has a proximal edge that abuts the bottom surface of the baseplate and an opposite distal-most edge, and (ii) is tapered downwardly such that its distal-most edge is shorter than its proximal edge;
a central screw received within the baseplate;
a glenosphere, wherein a top surface of the baseplate is directly adjacent to a bottom surface of the glenosphere; and
a post engaging a portion of a central bore of the glenosphere and a portion of the central screw;
assembling the baseplate and the central screw into a single unit;
surgically exposing and resecting a desired bone;
inserting the single unit into the bone;
placing the glenosphere onto the single unit;
inserting the post through the glenosphere; and
threading the post into a recess of the central screw.
11. The method of claim 10 , further comprising:
inserting a peripheral screw through one of a plurality of peripheral bores into the bone.
12. The method of claim 10 , wherein the implant comprises: the baseplate, comprising:
the central screw extending through the central bore of the baseplate;
a coupling member engaging a portion of the central bore in the baseplate; the glenosphere coupled to the coupling member;
the post extending through the glenosphere, the coupling member and into the central screw; and
at least one peripheral screw received within a plurality of peripheral bores of the baseplate.
13. The method of claim 12 , wherein the central screw further comprises:
a head portion;
a proximal non-threaded section extending away from a second end of the head portion;
a distal threaded section extending away from a second end of the proximal non-threaded section; and
a recess extending into the central screw from a first end through the head portion and into the proximal non-threaded section.
14. The method of claim 13 , wherein the recess comprises:
a first section extending from the first end of the central screw towards the second end; and
a second portion extending from a second end of the first section to a bottom of the recess, and wherein the second portion is threaded.
15. The method of claim 14 , wherein the central bore of the baseplate further comprises:
a proximal interior threaded section extending from a first end of the baseplate toward the second end; and
a distal non-threaded section extending from the proximal interior threaded section to the second end of the baseplate.
16. An implant, comprising:
a baseplate, the baseplate having a plurality of arcuate-shaped keels extending away from a bottom surface of the baseplate and positioned circumferentially around the bottom surface of the baseplate, wherein each of the plurality of arcuate-shaped keels (i) has a proximal edge that abuts the bottom surface of the baseplate and an opposite distal-most edge, and (ii) is tapered downwardly such that its distal-most edge is shorter than its proximal edge;
a central screw extending through a central bore in the baseplate, wherein the central screw comprises:
a head portion;
a proximal non-threaded section extending away from a second end of the head portion;
a distal threaded section extending away from a second end of the proximal non-threaded section; and
a recess extending into the central screw from a first end through the head portion and into the proximal non-threaded section, wherein the recess comprises:
a first section extending from the first end of the central screw towards a second end of the central screw; and
a second portion extending from a second end of the first section towards the second end of the central screw;
a glenosphere, wherein a top surface of the baseplate is directly adjacent to a bottom surface of the glenosphere; and
a post engaging a portion of the central bore of the glenosphere and a portion of the central screw.
17. The implant of claim 16 , wherein the recess further comprises:
a third portion extending from a second end of the second portion to a bottom of the recess, and wherein the third portion is non-threaded.
18. The implant of claim 17 , further comprising:
a post extending through the glenosphere and into the central screw.
19. The implant of claim 18 , further comprising:
at least one peripheral screw received within at least one of a plurality of peripheral bores of the baseplate.
20. The implant of claim 16 , wherein the implant further comprises:
a coupling member engaging a portion of the central bore of the baseplate, wherein the coupling member comprises:
a central bore extending through the coupling member from a first end to a second end;
a proximal recess extending into the coupling member from a first end, wherein the proximal recess overlaps with the central bore;
a threaded portion positioned on an exterior surface of the second end; and
a plurality of protrusions extending away from the first end of the coupling member for engaging the glenosphere.