Arterial Embolization Of Persistent Geniculate Arteries For Chronic Pain Management After Total Knee-Replacement Arthroplasty(Knee Embolisation)

Inclusion Criteria: * Adult patient (male or female) aged 18-85 * Suffering from moderate to severe chronic pain (EVA \> 50mm) more than 6 months after total prosthetic knee replacement surgery for severe gonarthrosis with impact on quality of life. * And having followed for at least 3 months a well-conducted conservative medical treatment (anti-inflammatory, analgesic, masso-kinesiotherapy). * The patient may initially have had a single or bilateral replacement. The period of 6 months must be respected for each side, between the intervention and the inclusion for homolateral pain. * Patient willing to participate in the study and with signed informed consent. * Patient willing to undergo post-operative monitoring for one year. Exclusion Criteria: Orthopaedic or rheumatological pathologies: * Rheumatoid arthritis * Psoriatic rheumatism * Spondylarthropathies * History of primary or secondary bone tumor, in remission or active. * Myeloma * Operational criteria: * Infection of the surgical site * Re-operation * Severe bleeding * Use of turnstile per-operative * Wound of popliteal artery * Diabetic patient * Comorbidities: * General condition responsible for objective hemostasis disorder (hemophilia, Willebrand disease, thrombocytopenia) and anticoagulant treatments. * Pads 100 G/L