Evaluation of a New Bi-Condylar Total Knee Prosthesis (TKP) With All-Ceramic Friction (The Forgotten Knee)

Inclusion Criteria: * Previously active adult under 70 years of age with disabling knee osteoarthritis resistant to medical treatments (anti-inflammatories, infiltrations, analgesics), with a frontal deformity \< 10° for a primary implantation * Written informed consent by the patient * Patients affiliated to the French social security system Exclusion Criteria: * Knee deformity \> 10 * Obesity (BMI \> 30) * Inflammatory rheumatism * History of infection * Poor skin coverage at the knee joint * Known allergy to the materials used and/or anesthetic used in the surgery * Repeated falls, major neurological disorders, mental or neuromuscular disorders which can be a source of post-operative complications * Significant functional deficit of the collateral ligaments * Positive serum or urine pregnancy test for woman with child bearing potential. Pregnancy or within 48 hours post-partum or breast feeding women * Phobic patient refusing to have an MRI * Patient with a contraindication to have an MRI (active medical devices, metal implants, etc.) * Patient under legal protection * Patient participating in another Clinical Investigation * Post fracture osteoarthritis * Osteoporosis * Anatomical configuration not allowing the implant to be fixed (depending on size constraints) * Disabling comorbidity upon any resumption of physical activity