Abstract: A surgical tool assembly for Total Knee Arthroplasty (TKA) including a femoral intra-medullary (IM) rod, a femoral intra-medullary (IM) alignment guide, a distal femoral alignment guide, and a distal femoral cutting guide. After the femoral IM alignment guide is selected to fit the valgus angle and utilized with the femoral IM rod with respect to the distal femur, the distal femoral alignment guide is integrated to the complex. Then, the distal femoral cutting guide is slid to the distal femoral alignment guide in the orientation from distal to proximal through the sliding concave integrated with the sliding track.

Abstract: An apparatus for displacing knee prosthesis comprises a cutting auxiliary member having two hollow posts at one side thereof and a plurality of grooves thereon forming at a predetermined angle, a measuring member having pegs on one side thereof, wing parts extending outwardly from middle of the measuring member, wherein a plurality of adjustment holes is arranged at predetermined angle on the wing parts, a measuring unit being movably equipped at a top of the measuring member, and a position member including a fitting board and two fixing plates respectively extending from a bottom of the fitting board, wherein the fitting board has scale holes at two ends thereof being matchable with the adjustment holes. Thereby, the apparatus is used for measuring an appropriate and more precise size for cutting femur bones before displacing knee prosthesis and to minimize a surgical wound.