Method and apparatus for performing a shoulder implant procedure
Disclosed is a set of prosthetic components for use in shoulder replacements. A glenoid component having a base and a plurality of coupling members are disclosed. The coupling members are used to couple the base to at least one of the acromion or coracoid process. A polymer insert which is configured to couple to the base member and articulate with a humeral component is provided.
1. A method of implanting an implant comprising:
preparing a glenoid surface;
coupling a glenoid base having a generally L-shaped cross-section formed of a superior ledge portion and support tray, to the prepared glenoid surface;
at least one of translating or rotating the glenoid base to engage the superior ledge portion with at least one of the acromion or coracoid process, after coupling a glenoid base to the prepared glenoid surface;
measuring a distance between the superior ledge portion and at least one of the acromion or coracoid process;
placing a spacer defining an aperture between the superior ledge portion and at least one of an acromion or coracoid process of a patient;
coupling the spacer to the glenoid base;
coupling the glenoid base to the spacer and to at least one of an acromion or coracoid process by passing a fastener through the aperture and into the bone and
after coupling a glenoid base to the prepared glenoid surface, fixing a bearing component having a generally L-shaped cross-section having a bearing superior ledge and a concave ledge articulating surface to the glenoid base so as to couple the bearing superior ledge to the superior ledge portion.
2. The method according to claim 1 further including choosing the spacer size based upon the measurement.
3. The method according to claim 2 further including removably coupling the spacer between the glenoid base and at least one of the acromion or coracoid process.
4. The method according to claim 1 further comprising measuring the distance between glenoid base and one of the acromion or coracoid process.
5. The method according to claim 1 wherein fixing a bearing component to a glenoid base is fixing a bearing component to a glenoid base after coupling the glenoid base through an aperture defined in the spacer.
6. A method of implanting an implant comprising:
coupling an L-shaped glenoid base having a superior ledge member and a support tray to a prepared glenoid surface;
measuring a distance between one of the superior ledge member and at least one of the acromion or coracoid process;
coupling at least one spacer between the superior ledge member and at least one of an acromion or coracoid process of a patient;
passing a fastener through a first aperture in the superior ledge member, a second aperture in the spacer and into bone;
coupling the fastener to at least one of an acromion or coracoid process;
coupling a bearing to the glenoid base after coupling the glenoid base to the prepared glenoid surface, said bearing having a superior ledge positioned adjacent to the superior ledge member.
7. The method according to claim 6 wherein coupling at least one spacer is coupling a first spacer to the acromion.
8. The method according to claim 6 wherein coupling a bearing occurs after passing a fastener through a first aperture.
9. The method according to claim 6 wherein coupling a glenoid base to a prepared glenoid includes passing a fastener through an aperture defined in the glenoid base.
10. The method according to claim 1 wherein fixing a bearing component to the glenoid base comprises coupling a bearing superior ledge adjacent the superior ledge portion.
11. The method according to claim 1 wherein fixing a bearing component to the glenoid base comprises coupling a bearing locking mechanism to a locking feature.
12. The method according to claim 1 further comprising passing a fastener through a slot defined in the support tray into the glenoid surface.
13. The method according to claim 12 further comprising translating the L-shaped glenoid base on the prepared glenoid surface to position the superior ledge member against one of the acromion or coracoid process.
14. The method according to claim 6 further comprising disposing a locking mechanism between the bearing and the L-shaped glenoid base.
15. The method according to claim 13 wherein the locking mechanism is one of a snap ring or a fixation member.