A Multicenter, Multinational, Cohort Long-term Post-market Clinical Follow-up (PMCF) of the Safety and Efficacy of the Osseoanchored Prostheses for the Rehabilitation of Amputees (OPRA) Implant System When Used for Transhumeral Implantation in Amputee Patients

This non-interventional clinical investigation is initiated for the purpose of long-term Post-Market Clinical Follow-up (PMCF) and the follow-up time of patients is expected to span from 6 months to \>20 years in function. It will collect and evaluate clinical data on the safety and performance of the OPRA™ Implant System when used on transhumeral amputees and within the scope of the intended use.