A prosthetic full finger assembly , comprising: a distal coupler ; a proximal rocker ; an adjustable ring tendon ; a ring disposed upon the adjustable ring tendon , the ring configured to receive and retain a residual finger of the user, wherein: the adjustable ring tendon together with the proximal rocker are configured to utilize articulation movements of the residual finger within the ring to articulate the distal coupler within a plane parallel to an x-z plane and about one or more axes parallel to a y axis; characterised in that the prosthetic full finger assembly further comprises an eccentric metacarpophalangeal (MCP) pivot configured for swivelable attachment to a hand of a user; wherein the proximal rocker is rotatively coupled between the MCP pivot at a proximal end thereof and the distal coupler at a distal end thereof; the adjustable ring tendon is rotatively coupled to the MCP pivot at a proximal end thereof and the distal coupler at a distal end thereof; the MCP pivot is configured to utilize abduction and adduction movements of the residual finger within the ring to articulate the distal coupler within a plane parallel to an x-y plane and about an axis parallel to a z axis; and a hand strap configured for attachment to a hand of the user, the MCP pivot rotatively coupled to the hand strap via an articulation joint. a distal coupler ; a proximal rocker ; an adjustable ring tendon ; a ring disposed upon the adjustable ring tendon , the ring configured to receive and retain a residual finger of the user, wherein: the adjustable ring tendon together with the proximal rocker are configured to utilize articulation movements of the residual finger within the ring to articulate the distal coupler within a plane parallel to an x-z plane and about one or more axes parallel to a y axis; characterised in that the prosthetic full finger assembly further comprises an eccentric metacarpophalangeal (MCP) pivot configured for swivelable attachment to a hand of a user; wherein the proximal rocker is rotatively coupled between the MCP pivot at a proximal end thereof and the distal coupler at a distal end thereof; the adjustable ring tendon is rotatively coupled to the MCP pivot at a proximal end thereof and the distal coupler at a distal end thereof; the MCP pivot is configured to utilize abduction and adduction movements of the residual finger within the ring to articulate the distal coupler within a plane parallel to an x-y plane and about an axis parallel to a z axis; and a hand strap configured for attachment to a hand of the user, the MCP pivot rotatively coupled to the hand strap via an articulation joint. the adjustable ring tendon together with the proximal rocker are configured to utilize articulation movements of the residual finger within the ring to articulate the distal coupler within a plane parallel to an x-z plane and about one or more axes parallel to a y axis; characterised in that the prosthetic full finger assembly further comprises an eccentric metacarpophalangeal (MCP) pivot configured for swivelable attachment to a hand of a user; wherein the proximal rocker is rotatively coupled between the MCP pivot at a proximal end thereof and the distal coupler at a distal end thereof; the adjustable ring tendon is rotatively coupled to the MCP pivot at a proximal end thereof and the distal coupler at a distal end thereof; the MCP pivot is configured to utilize abduction and adduction movements of the residual finger within the ring to articulate the distal coupler within a plane parallel to an x-y plane and about an axis parallel to a z axis; and a hand strap configured for attachment to a hand of the user, the MCP pivot rotatively coupled to the hand strap via an articulation joint. <EOS>