Clinical Research Directory

Inclusion Criteria: * Patients aged over 50 and under 75 years OR aged under 50 years with joint lesions not amenable to successful conservative treatment. * THA following a primary or secondary osteoarthritis * THA following an aseptic osteonecrosis * THA following a rapidly destructive osteoarthritis * Social insurance * Informed and signed consent Exclusion Criteria: * Patients younger than 50 years and with joint lesions that can be successfully treated with conservative treatment * Inflammatory rheumatism * Long-term corticosteroid treatment * Tumor Pathology of the hip bone * Study femoral stem not adapted to the patient's anatomy (verified on preoperative X-rays using Ceraver templates). * Loss of bone of the joint that makes it impossible to properly anchor a cementless prosthesis * Acetabular or femoral bone graft associated * Infectious hip arthritis history * Evolving infection of the articulation or peri-articular region involved, including severe neuroarthropathy * Surgical history on the affected hip * Allergy known to any component of prostheses * Known hypersensitivity to polystyrene sulfonate resins * Native cotyl with a diameter of less than 42mm or greater than 68mm * Significant muscle loss, neuromuscular injury or vascular insufficiency of affected limb * Charcot's disease * Immunocompromised patients * Difficulties of follow-up (departure on vacation, imminent change, geographical distance, patients not residing in metropolis, insufficient motivation) or understanding of the protocol * Patient Refusal * Pregnant and lactating women