Patent ID: 7611519

Claim:
A method for selecting one or more knee prosthesis elements, comprising: tensioning femoro-tibial spacing and acquiring with acquiring means spatial data concerning the tensioned femore-tibial spacing and position with a knee cap in position or dislocated, including a corresponding HKA angle, for at least three angular positions of the knee, including an intermediate position, an extended position if possible with 0° degrees of flexion, and a significantly flexed position; processing with determining means the data thus obtained, corresponding to the intermediate position and the extended position, to indicate whether, in these two positions, the HKA angles are substantially equal and are within tolerable limits of genu varum and of genu valgum; and processing with processing means the data corresponding to the extension and significant flexion to determine sizes and/or positions of an implant and, or a choice of a thickness of a tibial insert for optimum filling of a space between a prosthetic condyle and a tibial cut or a choice of the size of a femoral implant.