Prosthetic hand with digits actuated by muscles via strings

A prosthetic hand for a forearm amputee is disclosed. It comprises at least one prosthetic digit member 50 pivotally connected to a prosthetic metacarpal portion 70, which is supported by or attached to the stump, usually via a wrist box 175. A set of strings or wires 80 is provided to actuate the digit 50 according to flexion and extension. Anchoring elements such as rings or studs are provided to attach the strings 80 to the tendons or the muscles of the remaining stump, so the strings are mechanically linked to the tendons or muscles, thus allowing the prosthetic finger 50 to be moved. Extension elements 167, 168 may be implanted into the radius or ulna to provide extensions as required. Also disclosed is a prosthetic wrist, rigidly connected to the radius 165 (see figure 14) but rotatably connected to the ulna 166 so that the wrist can be rotated by rotating the radius around the ulna.