A new technology-assisted orthopaedic surgery to reduce the risk of dislocation in total hip arthroplasty

Appropriate component alignment is critical for improving stability after Total Hip Arthroplasty. Due to the large variation in patient kinematics during functional activities, current technologies lack definition of what constitutes correct target alignment. Apparently, well-orientated components on standard radiographs can still fail due to “functional” component malalignment. Evidently, previously defined “safe zones” are not appropriate for all patients, as they do not consider the dynamic behaviour of the hip joint. Aim of this project is to valuate and develop a new technology-assisted orthopaedic surgery device to preform preoperative planning based on a patient-specific dynamic analysis, and patientspecific instrumentation for delivery of the target component alignment of the cup to reduce the risk of dislocation in patients with spinopelvic imbalance who undergo a Total Hip Arthroplasty.