A prosthetic limb 1 comprising a socket 10a configured to receive and fix within it a portion of bone 10 from a residual portion of an amputated limb. The bone 10 preferably being fixed in the socket by means of a pin passed through a hole (6r, Fig 1) provide in the prosthesis 1 and passing through the socket 10a. In forming the prosthesis a surface 3D scan of the tibia to be amputated is undertaken to form a CAD file from which the prosthesis is then produced from a biocompatible material such as sintered titanium using 3D printing techniques. The prosthesis may further be covered in a silicone or latex sleeve. A prosthetic foot structure is also taught and is made up of a plurality of parts the foot structure (2Ar, 2Br, Fig 1), foot form (3r, Fig 1), ankle (4r, Fig 1) and wedge (5r, Fig 1) the wedge (5r) acting as the lock/release point between the prosthetic leg and the foot. At least a portion of the foot is further preferably formed form a carbon-fibre reinforced polymer.
