A patient-specific surgical guide for performing a total prosthetic knee revision, comprising: a femoral component configured to exclusively couple with the distal end of a femur bearing a femoral prosthesis attached to a femoral bone part; wherein the femoral component has: a distal portion configured to face the distal end of the femur , bearing at least two distal positioning holes configured to face a distal region of the femoral prosthesis when the femoral component is coupled with the distal end of the femur ; a frontal portion extending on the continuation of the distal portion and displaying a first abutment area configured to act in abutment against the femur bone part in a cortical frontal region of the femur , and a second area configured to face a frontal region of the femoral prosthesis , when the femoral component is coupled with the distal end of the femur ; wherein the frontal portion has: at least two guide holes , extending parallel to each other through the frontal portion at the first abutment area ; at least two frontal positioning holes extending through the frontal portion at the second area . a femoral component configured to exclusively couple with the distal end of a femur bearing a femoral prosthesis attached to a femoral bone part; wherein the femoral component has: a distal portion configured to face the distal end of the femur , bearing at least two distal positioning holes configured to face a distal region of the femoral prosthesis when the femoral component is coupled with the distal end of the femur ; a frontal portion extending on the continuation of the distal portion and displaying a first abutment area configured to act in abutment against the femur bone part in a cortical frontal region of the femur , and a second area configured to face a frontal region of the femoral prosthesis , when the femoral component is coupled with the distal end of the femur ; wherein the frontal portion has: at least two guide holes , extending parallel to each other through the frontal portion at the first abutment area ; at least two frontal positioning holes extending through the frontal portion at the second area . a distal portion configured to face the distal end of the femur , bearing at least two distal positioning holes configured to face a distal region of the femoral prosthesis when the femoral component is coupled with the distal end of the femur ; a frontal portion extending on the continuation of the distal portion and displaying a first abutment area configured to act in abutment against the femur bone part in a cortical frontal region of the femur , and a second area configured to face a frontal region of the femoral prosthesis , when the femoral component is coupled with the distal end of the femur ; wherein the frontal portion has: at least two guide holes , extending parallel to each other through the frontal portion at the first abutment area ; at least two frontal positioning holes extending through the frontal portion at the second area . at least two guide holes , extending parallel to each other through the frontal portion at the first abutment area ; at least two frontal positioning holes extending through the frontal portion at the second area . <EOS>