Locking articulated artificial finger assembly

An artificial finger assembly adapted to be engaged with a residual finger of a wearer and configured to mimic flexion and extension of a finger, the artificial finger assembly comprising:

• a residual finger socket adapted to receive the residual finger of the wearer and adapted to engage with the residual finger;
• a hinge arranged rearwardly of the residual finger socket;
• a pair of controlling arms pivotally coupled to the hinge and including a first controlling arm and a second controlling arm coupled to the residual finger socket;
• a middle finger portion extending forwardly of the residual finger socket and configured to pivot relative to the residual finger socket, wherein the first controlling arm is pivotally coupled to the middle finger portion;
• a fingertip portion arranged forwardly of the middle finger portion and pivotally coupled to the middle finger portion;
• and
• a lock assembly configured to lock the pair of controlling arms together to prevent the pivoting of the controlling arms, the middle finger portion, and the fingertip portion in response to a downward force exerted by the residual finger on the residual finger socket when the fingertip portion is in contact with an object.