A prosthetic finger comprising - an attachment adapted to constrain said prosthetic finger to an external body; - a phalanx proximal to said attachment and a phalanx distal to said attachment ; - said proximal phalanx being hinged to said attachment , defining a first axis of rotation ; - said distal phalanx being hinged to said proximal phalanx on the opposite side of said attachment , defining a second axis of rotation ; - at least one actuator adapted to control a rotation of said phalanges ; - at least one control cable defining a control end constrained to said distal phalanx and adapted to control said rotation of said phalanges in a first direction; and for each prosthetic finger ; - a return cable defining a first return end constrained to said attachment and a second return end constrained to said distal phalanx ; said return cable being on the opposite side of said control cable with respect to said axes of rotation ; - an elastic body adapted to keep said return cable under tension and to work in opposition to said control cable , so that when said control cable rotates said phalanges in said first direction, it moves said return cable , thereby loading said elastic body and allowing said elastic body to control a rotation of said phalanges in a second direction opposite to said first direction; and characterised in that - said prosthetic finger comprises channels for housing said cables formed in said phalanges ; and - said prosthetic finger comprises first pins for the sliding of said control cable , and second pins for the sliding of the return cable ; and wherein said first pins are positioned so that said control cable defines a torque on said first axis of rotation greater than the torque on said second axis of rotation . - an attachment adapted to constrain said prosthetic finger to an external body; - a phalanx proximal to said attachment and a phalanx distal to said attachment ; - said proximal phalanx being hinged to said attachment , defining a first axis of rotation ; - said distal phalanx being hinged to said proximal phalanx on the opposite side of said attachment , defining a second axis of rotation ; - at least one actuator adapted to control a rotation of said phalanges ; - at least one control cable defining a control end constrained to said distal phalanx and adapted to control said rotation of said phalanges in a first direction; and for each prosthetic finger ; - a return cable defining a first return end constrained to said attachment and a second return end constrained to said distal phalanx ; said return cable being on the opposite side of said control cable with respect to said axes of rotation ; - an elastic body adapted to keep said return cable under tension and to work in opposition to said control cable , so that when said control cable rotates said phalanges in said first direction, it moves said return cable , thereby loading said elastic body and allowing said elastic body to control a rotation of said phalanges in a second direction opposite to said first direction; and characterised in that - said prosthetic finger comprises channels for housing said cables formed in said phalanges ; and - said prosthetic finger comprises first pins for the sliding of said control cable , and second pins for the sliding of the return cable ; and wherein said first pins are positioned so that said control cable defines a torque on said first axis of rotation greater than the torque on said second axis of rotation . <EOS>