Humeral trays with tuberosity augments sufficiently designed to improve joint mechanics

A kit, comprising:

• a. a humeral stem configured to be positioned in a humerus of a patient;
• and
• b. a plurality of prosthetic augments,
• wherein each individual prosthetic augment within the plurality comprises:
• a humeral adapter tray portion,
• wherein the humeral tray portion comprises:
• a first face configured to be connected to a humeral liner, and
• a second face opposite the second face and configured to be connected to the humeral stem so as to connect the humeral liner to the humeral stem, and
• an augment portion configured to reconstruct a lateral tuberosity shape of the humerus,
• wherein the augment portion is connected to the humeral adapter tray portion and extends from a proximal end of the humeral adapter tray portion in a lateral direction so as to be configured to extend around a proximal end of the humerus when the individual prosthetic augment is assembled with the humeral stem and the humeral stem is positioned in the humerus, and
• wherein the augment portion comprises:
• a first face configured to face toward the humeral stem when the individual prosthetic augment is assembled with the humeral stem, and
• a second face configured to contact an underside of a muscle,
• wherein at least a portion of the second face includes a bulbous surface adapted to alter a wrapping angle of the muscle around the lateral tuberosity to a desired degree, and
• wherein the second face includes at least one of a constant radius of curvature or a variable radius of curvature.