Study Title UK Post-Market Clinical Follow-Up Of The INFINITY® Total Ankle System Study Design Prospective, multi-site, multi-year post-market clinical follow-up study Study Group Primary/Unilateral and/or bilateral Total Ankle Arthroplasty subjects implanted with INFINITY® Total Ankle System N Subjects 500 with 10 sites Follow-Up Schedule Subject enrollment will consist of a Pre-operative, Operative, 6 months, 1 yr., 2 yr., 5yr., 7 yr., 10 yr., and an unscheduled visit as needed.~Primary Objective Evaluate the long-term survivorship of the INFINITY® implant over 10 years~Secondary Objective(s) Secondary objectives assessed will be to:~Identify and assess the implant for component loosening and/or subsidence, any osteolysis and/or cyst formation through radiographic evaluation early and throughout the lifetime of the implant.~Compare the improvements in self-reported pain and social interaction for quality of life measures from pre-op through 10 years post operatively; assessed by EuroQol (EQ5D5L).~Compare pain and functional improvement in the Ankle Osteoarthritis Score (AOS), which is a visual analogue scale specifically designed as a modification of the Foot Function Index.~Compare the improvement in self-reported pain-free function scores from pre-op through 10 years post-operatively, assessed by the Manchester Oxford Foot Questionnaire (MOXFQ) walking/standing scores.~Identify and report the safety of the implant in terms of complications and adverse events.~Inclusion Criteria Subjects to be included in the study must meet all of the following criteria:~Be 21 years of age at the time of surgery;~Diagnosed with unilateral and/or bilateral ankle joint disease;~Diagnosed with ankle joint damage from rheumatoid arthritis, post-traumatic, or degenerative arthritis; Willing and able to consent to participate (written, informed consent / witnessed verbal consent) Willing and able to attend the requested follow-up visits;~Subjects determined by the Investigator to be an appropriate candidate for the INFINITY® Total Ankle System~Exclusion Criteria Subjects will be excluded from the study if they meet any of the following criteria:~Subjects with an ankle condition, as determined by the investigator, to be an inappropriate candidate for a total ankle replacement;~Subjects requiring revision total ankle replacement of the ankle being considered for study
Study Title UK Post-Market Clinical Follow-Up Of The INFINITY® Total Ankle System Study Design Prospective, multi-site, multi-year post-market clinical follow-up study Study Group Primary/Unilateral and/or bilateral Total Ankle Arthroplasty subjects implanted with INFINITY® Total Ankle System Number of Subjects 500 with 10 sites