Abstract: A pyramidal link-plate assembly for coupling a prosthetic limb upright assembly to another prosthetic limb component includes: a base plate member having a dome extending from a distal end and a cavity opening onto a distal apex of the dome, where the cavity includes a conically shaped portion with a diameter that widens with the distance from the distal apex of the dome; and a rotatable member which includes a substantially conically shaped body positioned within the conical portion of the cavity and which includes a frustopyramidal boss extending distally therefrom out through the opening in the distal apex of the dome. The conically shaped body of the rotatable member, positioned within the cavity, also widens with the distance from the distal apex of the dome. The boss is adapted to be received within an a central opening of a conventional annular coupling-socket.

Abstract: A prosthetic foot comprises: (a) a prosthetic foot member having a fore-foot portion and a heel/ankle portion; (b) a dove-tail shaped anchoring member positioned on a proximal surface of the heel/ankle portion, where the dove-tail shaped anchoring member has a proximal face, and a pair of outwardly angled vertical faces; (c) a pylon support member having an upper end adapted to receive and couple to a pylon component of a prosthetic limb, and a lower end with a dove-tail shaped groove extending therein, where the dove-tail shaped groove has a pair of inwardly angled vertical faces and an inner-distal face, and where the dove-tail shaped anchoring member is slidingly received within the dove-tail shaped groove of the pylon support member; and (d) a threaded coupler cooperative with the dove-tail shaped anchoring member to draw the inwardly angled vertical faces of the pylon support member into an interference fit with the outwardly angled faces of the dove-tail shaped anchoring member, thereby inhibiting slidi

Abstract: A pyramidal link-plate assembly for coupling a prosthetic limb upright assembly to another prosthetic limb component includes: a base plate member having a dome extending from a distal end and a cavity opening onto a distal apex of the dome, where the cavity includes a conically shaped portion with a diameter that widens with the distance from the distal apex of the dome; and a rotatable member which includes a substantially conically shaped body positioned within the conical portion of the cavity and which includes a frustopyramidal boss extending distally therefrom out through the opening in the distal apex of the dome. The conically shaped body of the rotatable member, positioned within the cavity, also widens with the distance from the distal apex of the dome. The boss is adapted to be received within an a central opening of a conventional annular coupling-socket.