Methods, systems and devices for properly positioning and aligning a prosthetic socket into a bone cavity of a patient. The methods involve placing a guide piece, in bone that is close to the bone cavity, according to the position and alignment of a trial prosthetic socket previously fitted in a desired position and alignment in the bone cavity and then, after removing the trial, positioning and aligning the prosthetic socket in the bone cavity using the guide pieces position and alignment for guidance. A tilt sensing device is used to show the tilt or angle of devices used in the positioning and alignment procedure.
