Post-Approval Study to Investigate the Long Term (8 Year) Survivorship of STAR Ankle Among Continued Access Study Patients

The study population consists of all living subjects who participated in the continued access arm of the IDE clinical trial. Inclusion Criteria: * Only patients that participated in the continued access study make up the patient cohort for this long-term follow-up study. * Willing and able to give informed consent. Exclusion Criteria: * Subjects who were withdrawn or withdrew consent to participate in the investigation * Subjects who do not consent to participate in long-term or provide personal contact information to the sponsor(solely for the purposes of tracking subjects to help ensure follow-up compliance)