A method, comprising: receiving, via a processor, a plurality of biomechanical values comprising a pelvic incidence, PI, a sacral slope, SS, a pelvic tilt, PT, a delta of the sacral slope, dSS, a pelvic femoral angle, PFA, a leg length, a hip offset, a hip center of rotation, and a femoral version based on images of a first patient; determining , via a processor, a sagittal acetabular cup position in the form of a standing Anteinclination, AI, a seated AI and a SacroAcetabular Angle, SAA, based on at least one of (i) the standing sacral slope of the first patient relative to a normative SS, (ii) the delta of the sacral slope of the first patient between a standing position of the first patient and an upright seated position of the first patient, (iii) the femoral version of the first patient, when the femoral version corresponds to a femoral version outlier position, and (iv) the pelvic femoral angle of the first patient that corresponds to a PFA outlier position in at least one of the standing position, the upright seated position, or a delta between the standing position and the upright seated position, wherein Pelvic Acetabular Angle, PAA, refers to an angle that corresponds to (90-AI)+PT, wherein one or more of the following relationships is used to determine the standing AI, the seated AI, and the SAA (i) SAA + PAA =PI+ 90; (ii) a master ratio of (3:2:1:-0.4:1.5) / (1.5:0.5) for (PI:SS:PT:AI:SAA) / (PAA:dSS); and (iii) PI + (AI-PT) = SAA; determining , via the processor, a coronal acetabular cup position in the form of a supine coronal anteversion and at least one of a supine or a standing coronal inclination and anteversion based on the sagittal acetabular cup position; and determining , via a processor, a post-operative standing AI and a post-operative seated AI based on at least the coronal acetabular cup position. receiving, via a processor, a plurality of biomechanical values comprising a pelvic incidence, PI, a sacral slope, SS, a pelvic tilt, PT, a delta of the sacral slope, dSS, a pelvic femoral angle, PFA, a leg length, a hip offset, a hip center of rotation, and a femoral version based on images of a first patient; determining , via a processor, a sagittal acetabular cup position in the form of a standing Anteinclination, AI, a seated AI and a SacroAcetabular Angle, SAA, based on at least one of (i) the standing sacral slope of the first patient relative to a normative SS, (ii) the delta of the sacral slope of the first patient between a standing position of the first patient and an upright seated position of the first patient, (iii) the femoral version of the first patient, when the femoral version corresponds to a femoral version outlier position, and (iv) the pelvic femoral angle of the first patient that corresponds to a PFA outlier position in at least one of the standing position, the upright seated position, or a delta between the standing position and the upright seated position, wherein Pelvic Acetabular Angle, PAA, refers to an angle that corresponds to (90-AI)+PT, wherein one or more of the following relationships is used to determine the standing AI, the seated AI, and the SAA (i) SAA + PAA =PI+ 90; (ii) a master ratio of (3:2:1:-0.4:1.5) / (1.5:0.5) for (PI:SS:PT:AI:SAA) / (PAA:dSS); and (iii) PI + (AI-PT) = SAA; (i) SAA + PAA =PI+ 90; (ii) a master ratio of (3:2:1:-0.4:1.5) / (1.5:0.5) for (PI:SS:PT:AI:SAA) / (PAA:dSS); and (iii) PI + (AI-PT) = SAA; determining , via the processor, a coronal acetabular cup position in the form of a supine coronal anteversion and at least one of a supine or a standing coronal inclination and anteversion based on the sagittal acetabular cup position; and determining , via a processor, a post-operative standing AI and a post-operative seated AI based on at least the coronal acetabular cup position. <EOS>