Shoulder arthroplasty systems and configurations for components thereof

1. A reverse shoulder prosthesis system, comprising:

a baseplate comprising:

a body having an oblong configuration and including:

a lateral side,

a medial side,

a first end comprising a first bore extending through the body from the lateral side to the medial side; and

a second end positioned opposite the first end and comprising a second bore extending through the body from the lateral side to the medial side, the first end and the second end defining the oblong configuration;

a threaded component; and

a shaft having a hydroxyapatite coating positioned between the body and the threaded component;

a glenosphere component comprising:

a medial side including a recess configured to receive at least the lateral side of the baseplate body such that the first end and the second end of the baseplate body is positioned in the recess;

a lateral side; and

a tapered trunnion;

a humerosocket component comprising:

a medial side;

a lateral side;

a projection positioned on the lateral side of the humerosocket component; and

an articulating face defined in the medial side of the humerosocket component and configured to receive the lateral side of the glenosphere component; and

a humeral component comprising:

a distal stem configured to be fitted within a prepared proximal end of a humerus of a patient;

a transition region including an aperture extending through a portion of the transition region; and

a proximal head defining a cavity extending distally into the proximal head, the cavity configured to receive the projection of the humerosocket component.

2. The reverse shoulder prosthesis system of claim 1 , wherein the first end of the baseplate body and the second end of the baseplate body span a distance that is smaller than an outside diameter of the recess in the medial side of the glenosphere component.

3. The reverse shoulder prosthesis system of claim 1 , wherein at least a portion of the recess in the medial side of the glenosphere component is configured to receive bone grafting material.

4. The reverse shoulder prosthesis system of claim 1 , wherein the medial side of the baseplate body comprises an osteoinductive surface.

5. The reverse shoulder prosthesis system of claim 1 , wherein the medial side of the glenosphere component comprises an osteoinductive surface.

6. The reverse shoulder prosthesis system of claim 1 , wherein the baseplate body further comprises a tapered cavity extending from the lateral side into the baseplate body.

7. The reverse shoulder prosthesis system of claim 6 , further comprising a hexagonal recess formed in a base of the tapered cavity.

8. The reverse shoulder prosthesis system of claim 7 , wherein the hexagonal recess is configured to receive a baseplate installation tool.

9. The reverse shoulder prosthesis system of claim 1 , wherein the humerosocket component further comprises an annular portion, and the projection comprises a tapered portion.

10. The reverse shoulder prosthesis system of claim 9 , wherein the tapered portion extends to a base of the lateral side of the humerosocket component.

11. A method of using a reverse shoulder prosthesis system, the method comprising:

attaching a baseplate to a scapula of a patient, the baseplate comprising:

a body having an oblong configuration and including:

a lateral side,

a medial side,

a first end comprising a first bore extending through the body from the lateral side to the medial side; and

a second end positioned opposite the first end and comprising a second bore extending through the body from the lateral side to the medial side, the first end and the second end defining the oblong configuration;

a threaded component; and

a shaft having a hydroxyapatite coating positioned between the body and the threaded component;

attaching a glenosphere component to the baseplate, the glenosphere component comprising:

a medial side including a recess configured to receive at least the lateral side of the baseplate body such that the first end and the second end of the baseplate body is positioned in the recess;

a lateral side; and

a tapered trunnion;

attaching a humeral component to a humerus of the patient, the humeral component comprising:

a distal stem configured to be fitted within a prepared proximal end of the humerus of the patient;

a transition region including an aperture extending through a portion of the transition region; and

a proximal head defining a cavity extending distally into the proximal head, the cavity configured to receive a projection of a humerosocket component; and

attaching the humerosocket component to the humeral component, the humerosocket component comprising:

a medial side;

a lateral side;

a projection positioned on the lateral side of the humerosocket component; and

an articulating face defined in the medial side of the humerosocket component and configured to receive the lateral side of the glenosphere component.

12. The method of claim 11 , wherein the first end of the baseplate body and the second end of the baseplate body span a distance that is smaller than an outside diameter of the recess in the medial side of the glenosphere component.

13. The method of claim 11 , further comprising depositing bone grafting material in at least a portion of the recess in the medial side of the glenosphere component.

14. The method of claim 11 , wherein the medial side of the baseplate body comprises an osteoinductive surface.

15. The method of claim 11 , wherein the medial side of the glenosphere component comprises an osteoinductive surface.

16. The method of claim 11 , wherein the baseplate body further comprises a tapered cavity extending from the lateral side into the baseplate body.

17. The method of claim 16 , further comprising a hexagonal recess formed in a base of the tapered cavity.

18. The method of claim 17 , wherein attaching the baseplate to the scapula of the patient is performed at least in part by inserting a baseplate installation tool into the hexagonal recess.

19. The method of claim 11 , wherein the humerosocket component further comprises an annular portion, and the projection comprises a tapered portion.

20. A method of manufacturing a reverse shoulder prosthesis system, the method comprising:

forming a baseplate comprising:

a body having an oblong configuration and including:

a lateral side,

a medial side,

a first end comprising a first bore extending through the body from the lateral side to the medial side; and

a second end positioned opposite the first end and comprising a second bore extending through the body from the lateral side to the medial side, the first end and the second end defining the oblong configuration;

a threaded component; and

a shaft having a hydroxyapatite coating positioned between the body and the threaded component;

forming a glenosphere component comprising:

a medial side including a recess configured to receive at least the lateral side of the baseplate body such that the first end and the second end of the baseplate body is positioned in the recess;

a lateral side; and

a tapered trunnion;

forming a humerosocket component comprising:

a medial side;

a lateral side;

a projection positioned on the lateral side of the humerosocket component; and

an articulating face defined in the medial side of the humerosocket component and configured to receive the lateral side of the glenosphere component; and

forming a humeral component comprising:

a distal stem configured to be fitted within a prepared proximal end of a humerus of a patient;

a transition region including an aperture extending through a portion of the transition region; and

a proximal head defining a cavity extending distally into the proximal head, the cavity configured to receive the projection of the humerosocket component.