1. A glenoid component apparatus for shoulder arthroplasty, the apparatus comprising: a bearing portion configured to engage a bearing element associated with the humerus; and a stem portion connected to said bearing portion; wherein said stem portion models a normalized glenoid vault morphology, wherein said stem portion includes a plurality of mutually substantially parallel triangular cross sections that are spaced apart along a dimension of said stem portion, and wherein said plurality of mutually parallel triangular cross sections includes: a first triangular cross section having a width and having a depth about 2.8 times the width; a second triangular cross section having a width about 2.2 times the width of the first triangular cross section and having a depth about 2 times the width of the first triangular cross section; a third triangular cross section having a width about 2.2 times the width of the first triangular cross section and having a depth about 1.8 times the width of the first triangular cross section; a fourth triangular cross section having a width about 1.7 times the width of the first triangular cross section and having a depth about 2 times the width of the first triangular cross section; and a fifth triangular cross section having a width about equal to the width of the first triangular cross section and having a depth about 2.2 times the width of the first triangular cross section.