A prosthetic component centering block (10) for mounting and adjustably centering a socket to a prosthetic leg, and for establishing and maintaining proper flexion and offset there between. The centering block (I0) comprises a solid member defined by an upper surface, lower surface, and surrounding sides. Both the upper surface and lower surface define an elongated geometric shape extending from a front end to a rear end, and the upper surface is inclined front-to-rear at a pre-determined flexion angle Φ relative to said lower surface.
