Osseointegrated Transtibial Prosthesis With Neural Interface

The e-OPRA System for transtibial use consists of an anchorage element (Fixture), which is surgically inserted in the medullary canal of the amputated skeleton of the lower limb. The skin penetrating e-Abutment is then inserted and secured with the e-Abutment screw. To allow the system to be used with an external neuro-mechanical prosthesis, soft tissues from the distal limb are preserved incorporated into the residual limb. Muscle electrodes are then placed in the neuro-muscular constructs. After a rehabilitation program, in everyday use, the implanted e-OPRA device will be used by the patient with the Axor TC and their commercially available prosthesis. However, the modified version of the implant will allow the patient to use a powered neuro-mechanical prosthesis during specified testing scenarios.