Methods and systems for targeted alignment and sagittal plane positioning for hip replacement surgery

A non-transitory computer-readable medium having stored thereon program instructions that upon execution by a processor, cause performance of a method comprising:

• the processor determining 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) a standing sacral slope (SS) of a first patient relative to a normative SS, (ii) a delta of the sacral slope (dSS) of the first patient between a standing position of the first patient and an upright seated position of the first patient, (iii) a femoral version of the first patient, when the femoral version corresponds to a femoral version outlier position, and (iv) a pelvic femoral angle (PFA) 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;
• the processor determining 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;
• the processor determining a post-operative standing AI and a post-operative seated AI based on at least the coronal acetabular cup position;
• and
• the processor receiving a plurality of biomechanical values comprising a pelvic incidence (PI), the sacral slope (SS), a pelvic tilt (PT), the delta of the sacral slope (dSS), the pelvic femoral angle (PFA), a leg length, a hip offset, a hip center of rotation, and the femoral version based on images of the first patient.