Silicone has made a huge impact on the prosthetic community over the last couple of decades. As an interface between the skin of the prosthetic user and the prosthesis, it has proved to be far superior to prosthetic socks in most cases.
For upper extremity myoelectric users, conductive silicone is available for fabrication into a custom silicone liner (the black lines on the liner shown in the picture). The unified structure allows for superior suction suspension and comfort. The conductive silicone allows for the muscle EMG signals to be captured without an electrode having to be placed directly against the users skin.
We have completed two conductive silicone myoelectric arms to date and they have yielded fantastic results and client feedback. It may not be right for everyone, but I would recommend further investigation with your prosthetist for anyone looking to start a new myoelectric arm.