RI.HIP MODELER vs CupCalc

RI.HIP is a non-invasive standalone Total Hip Arthroplasty (THA) planning software application designed to provide preoperative planning for hip implant acetabular cup rotational selection and placement. RI.HIP allows surgeons to visualize and perform analysis of digital images for assessment of spinopelvic mobility of the patient. The app is used to characterise patient conditions, manage patient performance expectations, and help surgeons determine acetabular cup placement based on spinopelvic mobility. RI.HIP uses imported lateral sitting/standing X-rays to determine patient specific pelvic tilt. In addition to pelvic tilt, the algorithm considers typical patient activities and implants to enable a placement that is individually suited to the patient. The application accesses a simulation database which has been generated by the LifeMOD simulation platform. Hip kinematics and distance to impingement are calculated for each activity, given a set of implant specifications. The software provides a baseline cup orientation recommendation intended to reduce incidences of impingement based on patient condition and implant specifications. The surgeon is reminded to verify and adjust the parameters based on their clinical judgment. RI.HIP can be used preoperatively to plan implant placement using standing and sitting X-rays. Certain physiological characteristics may not be seen on a preoperative X-ray but may be observed in the OR. The surgeon can change the plan intraoperatively upon viewing the hip joint characteristics.

CupCalc — Spinopelvic Planning Reference CupCalc is an educational reference calculator for orthopaedic surgeons and trainees performing total hip arthroplasty. It applies published mathematical formulas to compute mobility-specific acetabular cup targets based on pelvic incidence, sacral slope, and femoral mobility classification. The calculations in CupCalc are derived entirely from peer-reviewed literature. No proprietary algorithms. No black-box outputs. Every number traces back to a published source — accessible within the app. What CupCalc calculates: — Functional anteversion and inclination targets referenced to either the anterior pelvic plane or standing AP radiograph — Standing and sitting sacral slope with delta sacral slope mobility classification — Pelvic femoral angle (standing and sitting) — Anterior pelvic tilt correction for anatomic landmark guidance — Safe zone plot with CSI thresholds — Exportable PDF planning summary with full reference list Built on the published work of: Bodner, Dorr, Heckmann, Stefl, Kanawade, Wan, and colleagues whose research established the framework for functional spinopelvic planning in THA. For Fellows: CupCalc is free for 12 months for active arthroplasty fellows through the Fellow Access program. Apply within the app — program verification is handled automatically via e-mail. Privacy: CupCalc does not collect, store, or transmit protected health information. Do not enter patient-identifying information into any field. Anonymous case labels only. CupCalc is an educational reference tool intended for use by qualified medical professionals. It performs published mathematical formulas and presents results for independent professional evaluation. It does not provide surgical recommendations, replace clinical judgment, or constitute medical advice. Not a medical device. Not cleared by the FDA. All clinical decisions remain the sole responsibility of the treating surgeon. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/