Vantage Mobile Bearing Total Ankle System Post Market Clinical Follow-up (Outside US)

Inclusion Criteria: * Patient is indicated for total ankle arthroplasty * Patient is at least 21 years of age * Patient is likely to be available for follow-up out to 10 years * Patient is willing to participate by complying with pre- and postoperative visit requirements * Patient is willing and able to read and sign a study informed consent form Exclusion Criteria: * Patient with excessive bone loss at the ankle joint site * Patient with severe osteoporosis * Patient with complete talar avascular necrosis * Patient with active osteomyelitis * Patient with infection at the ankle site or infection at distant sites that could migrate to the ankle * Patient with sepsis * Patient with vascular deficiency in the involved limb * Pateint with neuropathic joints * Patient with neurological or musculoskeletal disease or loss of function that may adversely affect movement of the lower limb, gait, or weight bearing * Patient with poor soft tissue coverage around the ankle * Patient with Charcot arthropathy * Previsous ankle arthrodesis with excision of the malleoli * Excessive loads as cuased by activity or patient weight - per investigator discretion * Skeletally immature patients (patient is less than 21 years if age at time of surgery) * Patient with dementia * Patient with known metal allergies * Patients who are unwilling to provide informed consent * Patients who are unlikely to be available for follow-up out to 10 years * Patients who are not deemed suitable candidates for the subject device * Patient is pregnant