Humeral joint replacement component

A method of replacing a portion of a joint of a patient, comprising:

• making an incision in the patient and exposing an articulating surface of the joint;
• cutting bone of the joint to remove at least a portion of a native articulating surface, and to form a spherical shape;
• positioning a prosthetic replacement upon said spherical shape of said cut bone, said prosthetic replacement having a first side including a replacement articulating surface, the replacement articulating surface having a superior/inferior dimension greater than an anterior/posterior dimension length, said prosthetic replacement further having a spherical chamber formed in a second side, said spherical chamber sized and dimensioned to conform to the size and dimension of the spherical shape of the cut bone;
• inserting the cut bone of the joint into said spherical chamber;
• and
• aligning the articulating surface of said prosthetic replacement with a mating articulating surface in the body, by changing a position of said cut bone within said spherical chamber,
• wherein said prosthetic replacement replaces the removed portion of a native articulating surface;
• and
• wherein the replacement articulating surface includes two bands extending from a central spherical portion toward a periphery of the articulation surface maintaining substantially the same radius of curvature as the central spherical portion throughout their extent through a superior to inferior range, and wherein the radius of curvature of the two bands gradually decreases along an anterior/posterior dimension.