Abstract: An implanted piezoelectric module generates charge which may be applied to tissue or used to power or recharge an implanted device such as a pump or pacemaker. In a system for enhanced bone healing or anchoring of an implanted bone prosthesis such as a plate, stem, articulation component or other structural component, the piezoelectric element is coupled to receive mechanical strain from body activity and generates a charge which is applied to enhance bone growth for anchoring the prosthesis. In one embodiment, the piezoelectric element is attached to a prosthetic hip stem on the medial side in a position on the shoulder or neck of the stem to preferentially undergo compressive strain. Preferably the element attaches near the surface and is poled such that its outer surface constitutes a negative electrode that operates to stimulate bone growth across an opposing receiving gap in the proximal femur.