a first humeral anchor comprising a stem and a metaphysis portion having a metaphyseal profile; and

a stemless humeral anchor comprising:

a first end;

a second end opposite the first end, the second end disposed farthest into the humerus when the humeral anchor is implanted;

an exterior surface;

an anchor body having a proximal portion and a distal portion coupled with the proximal portion;

a lateral projection providing a discontinuity between the proximal portion and the distal portion;

a first recess in the proximal portion and a second recess in the distal portion, wherein the second recess has a tapered wall shaped to receive a coupler for converting a reverse anatomical humeral implant to an anatomical humeral implant; and

at least two fins disposed on the exterior surface near the second end and configured to reduce, minimize or eliminate rotation of the stemless humeral anchor about a longitudinal axis of the stemless humeral anchor longitudinal axis when the stemless humeral anchor is implanted in bone of a humerus, wherein the at least two fins extend distally from the lateral projection toward the second end and are thicker near the lateral projection and thinner near the second end and are circumferentially spaced from one another with a porous surface intervening between adjacent fins; and

wherein the exterior surface of the stemless humeral anchor is configured to occupy less volume of a metaphysis of a patient than is the metaphyseal profile of the humeral anchor that includes the stem.