Dual-mobility cups were designed to reduce risk of dislocation during full ROM. Dislocation is the leading cause of revision after total hip arthroplasty (THA). The dual-mobility technology was developed, featuring a mobile polyethylene liner locked onto a femoral head and articulating in a metallic acetabular shell. The POLARCUP hip system was designed to address the challenges of treating patients - in both primary and revision cases - who are susceptible to dislocation and need greater stability.
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