  This work proposes a new kinematics of a myoelectric hand prosthesis with a
single actuator, allowing to realize the tridigital grip but also the lateral
grip. Inspired by tridigital prostheses, which are simpler, more robust and
less expensive than polydigital prostheses, this new kinematics aims at
proposing an accessible prosthesis (affordable, easy-to-use, robust,
easy-to-repair). Cables are used instead of a rigid rod to transmit the
movement bewteen the upper fingers and the thumb. The methods and design
choices are detailed in this article. To conclude, the evaluation of the
prototype by an experimented user leads to a first discussion of the results.
