The Medacta Quadra-P Anteverted Study

The primary objective of this study is to evaluate the 10-year survival of the anteverted Quadra-P stem in patients operated for primary total hip arthroplasty, according to the inclusion criteria.

Secondary objectives:

* To assess clinical performance by Harris Hip score collected during preoperative and postoperative visits at 3 months, 1, 2, 5, 7 and 10 years. * Assess radiological performance by standard radiographic examination performed preoperatively, postoperatively before discharge and during postoperative visits at 3 months, 1, 2, 5, 7 and 10 years. * Assessing the patient's perception of the prosthetic joint by means of FJS questionnaire collected during the preoperative visit and postoperative visits at 3 months and at 1, 2, 5, 7 and 10 years after surgery. * Assessment of functional recovery by gait analysis study * Collect the rate of complications throughout the course of the study