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Four monopolar epymisial and four monopolar intramuscular electrodes were sutured on/in native residual muscles to provide myoelectric signals for prosthetic control. Furthermore, fascicles of the median, ulnar, and radial nerves were transferred into nonvascularized muscle graft to create additional myoelectric sites. Each nonvascularized muscle graft was instrumented with a monopolar intramuscular electrode. Part of the ulnar nerve was wrapped with a cuff electrode for sensory feedback. A titanium fixture was implanted into both the radius and the ulna bones and left to osseointegrate. In addition, a percutaneous abutment was installed into each fixture, allowing for skeletal attachment of a prosthetic hand. Feedthrough connectors allow for wired electrical communication from the proximal end of the fixtures (inside the body) to the distal end of the two abutments (outside the body), creating a bidirectional communication between the human and the prosthetic hand.