Patent ID: 8641780

Claim:
A lower limb prosthesis comprising a stump socket, a shin member connected to the stump socket, and a foot-mounting connector directly pivotally connected to a distal end of the shin member at a medial-lateral heel-height adjustment axis so as to pivot relative to the shin member about the medial-lateral heel-height adjustment axis, wherein the shin member defines a shin axis which extends substantially vertically when an amputee is standing on flat ground and which is spaced-apart from the heel-height adjustment axis, the shin member including a hydraulic heel-height adjustment device including a linear piston and cylinder assembly comprising a piston movable substantially longitudinally of the shin member within a chamber located inside the shin member for pivoting the foot-mounting connector about said heel-height adjustment axis, at least a part of the chamber varying in volume as the piston moves, and wherein the piston has a piston rod connected to the foot-mounting connector by a pivot joint defining a pivot axis spaced-apart from and parallel to the heel-height adjustment axis.