A pre-operative planning method for designing a glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800), the method comprising: pre-operative analysis comprising: aligning an anterior edge of a glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) with an anterior edge of a glenoid bone (12, 50b, 704, 804); adjusting a retroversion of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800); adjusting an augmentation (34, 416, 516, 605, 615, 625, 635, 645, 655, 752) of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800); adjusting an inferior tilt of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800); evaluating bone support for the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800), wherein an amount of a rear surface of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) that is supported by or touching bone is assessed; adjusting a medialization of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) by assessing the volumetric amount of bone needed to be removed by reaming, or the minimum total distance of reaming necessary, in order to optimize the bone to implant interface; analyzing fixation support in the absence of central pegs (44, 320, 603, 613, 623a, 623b, 633, 643a, 643b, 653,901,902,903,904, 905) that penetrate a vault medially; measuring and matching widths of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) and the glenoid bone after reaming and aligning inferior and superior axes of the glenoid implant (20, 50a, 300,400,500,600,610,620,630,640,650,750, 800) and bone (12, 50b, 704, 804); and designing a glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) based on the pre-operative analysis. aligning an anterior edge of a glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) with an anterior edge of a glenoid bone (12, 50b, 704, 804); adjusting a retroversion of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800); adjusting an augmentation (34, 416, 516, 605, 615, 625, 635, 645, 655, 752) of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800); adjusting an inferior tilt of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800); evaluating bone support for the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800), wherein an amount of a rear surface of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) that is supported by or touching bone is assessed; adjusting a medialization of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) by assessing the volumetric amount of bone needed to be removed by reaming, or the minimum total distance of reaming necessary, in order to optimize the bone to implant interface; analyzing fixation support in the absence of central pegs (44, 320, 603, 613, 623a, 623b, 633, 643a, 643b, 653,901,902,903,904, 905) that penetrate a vault medially; measuring and matching widths of the glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) and the glenoid bone after reaming and aligning inferior and superior axes of the glenoid implant (20, 50a, 300,400,500,600,610,620,630,640,650,750, 800) and bone (12, 50b, 704, 804); and designing a glenoid implant (20, 50a, 300, 400, 500, 600, 610, 620, 630, 640, 650, 750, 800) based on the pre-operative analysis.