An adjustable lower limb prosthesis has a pylon connected to both a prosthetic foot and to the stump adapter by way of a foot/pylon joint and a pylon/stump joint, respectively. Each of the joints is similar and includes a tapered socket holding a truncated conical wedge sleeve. The wedge sleeve has a bore which may be angled with respect to the cone axis, and into which the pylon is fitted. A cap locks the wedge sleeve in the bore and locks the pylon in the wedge sleeve. For adjusting the prosthesis, a set of wedge sleeves are available to the prosthetist, each having a bore with a different offset with respect to the conical axis of the sleeve. The prosthetist selects the appropriate sleeve based upon a prior determination using a temporary pylon and an alignment adapter. The correct foot wedge sleeve and circumferential alignment of the wedge sleeve are set with the aid of discs having offset holes.