A prosthesis may include a stem, a ball stud, an adaptor, and a head. The stem may include a longitudinal axis and a bore having a central axis that is angled relative to the longitudinal axis. The ball stud may include a cylindrical shaft and a ball end. The cylindrical shaft may be received in the bore of the stem. The adaptor may include a tapered outer surface and a ball socket rotatably receiving the ball end of the stud. The head may be rotatably supported by the adaptor and may include a semispherical articulating surface and a female taper rotatably receiving the tapered outer surface of the adaptor.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

A prosthesis may include a stem, a ball stud, an adaptor, and a head. The stem may include a longitudinal axis and a bore having a central axis that is angled relative to the longitudinal axis. The ball stud may include a cylindrical shaft and a ball end. The cylindrical shaft may be received in the bore of the stem. The adaptor may include a tapered outer surface and a ball socket rotatably receiving the ball end of the stud. The head may be rotatably supported by the adaptor and may include a semispherical articulating surface and a female taper rotatably receiving the tapered outer surface of the adaptor.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

A prosthesis system includes at least one stem including a cavity, a plurality of heads having a head coupling portion, at least one first coupler including a first upper coupling portion and a first lower coupling portion, the first upper coupling portion configured to couple with the head coupling portion of each of the plurality of heads and the first lower coupling portion configured to couple with the stem with a predetermined version angle and a predetermined inclination angle, and at least one second coupler including a second upper coupling portion and a second lower coupling portion, the second upper coupling portion configured to couple with the head coupling portion of each of the plurality of heads and the second lower coupling portion configured to couple with the stem with any of a plurality of version angles and any of a plurality of inclination angles.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

A partial reverse shoulder prosthesis includes a humeral stem and a variable angle tray including a plate including a through hole including at least two cutouts oriented horizontally across from one another, and a repositionable variable angle stem occupying at least a portion of an internal cavity defined by the through hole and including a first washer including threads at least partially defining a first opening, a post at least partially occupying the internal cavity, and a pin insertable into the first opening and having a threaded head sized to engage the threads of at least one of the first washer and the post; wherein the wall of the internal cavity is sized to retain the first washer and at least a portion of the post.