Glenoid trial and implant assembly for reverse total shoulder arthroplasty and method of use

A glenoid trial and implant assembly for reverse total shoulder arthroplasty comprising:

• a glenoid baseplate defining a baseplate bore;
• an adapter assembly including:
• an adapter,
• an adapter plate having a body portion sized to be received in the baseplate bore, the adapter plate including a plate magnet imbedded within a lateral adaptor plate face, and
• an adapter fastener configured to couple the adapter plate to the adapter, the adapter fastener including an adapter fastener head configured to tighten against the adapter plate in a trial state;
• a glenoid trial including a lateral glenoid trial face, a medial glenoid trial face, and a glenoid trial magnet imbedded within the medial glenoid trial face, the glenoid trial magnet and the plate magnet configured to magnetically couple the glenoid trial to the adapter when in the trial state;
• a glenoid implant including a lateral glenoid implant face and a medial glenoid implant face that defines a glenoid implant cavity, a curvature of the lateral glenoid implant face matching a curvature of the lateral glenoid trial face, wherein the adapter plate is positioned within the glenoid implant cavity when in an installed state;
• and
• a humeral cup including a concave surface, wherein the concave surface of the humeral cup abuts the lateral glenoid trial face when in the trial state, and wherein the concave surface of the humeral cup abuts the lateral glenoid implant face when in the installed state.

A glenoid trial and implant assembly for reverse total shoulder arthroplasty comprising:

• a baseplate assembly including a glenoid baseplate component and a baseplate fastener, the glenoid baseplate component defining a baseplate bore sized to receive the baseplate fastener having a rotation interface;
• an adapter assembly including an adapter, an adapter plate, and a locking projection, the adapter including an adapter bore, an adapter flange, and a body portion extending from the adapter flange to a medial body portion end, the body portion sized to be received in the baseplate bore, the locking projection extending from the body portion and configured to be received in and engage the rotation interface of the baseplate fastener to prevent rotation of the adapter relative to the baseplate fastener and the glenoid baseplate component when in a trial state and in an installed state;
• a glenoid trial including a lateral glenoid trial face and a medial glenoid trial face that defines a glenoid trial cavity sized to receive the adapter plate, the glenoid trial magnetically coupled to the adapter assembly when in the trial state;
• a glenoid implant including a lateral glenoid implant face and a medial glenoid implant face that defines a glenoid implant cavity, a bulbus shape of the lateral glenoid implant face matching a bulbus shape of the lateral glenoid trial face, the glenoid implant coupled to the adapter assembly when in the installed state;
• and
• a humeral cup including a concave surface that abuts the lateral glenoid trial face when in the trial state and the concave surface abuts the lateral glenoid implant face when in the installed state.