Novel computer-assisted method for revision arthroplasty of the knee

Figure 1 Revision total knee arthroplasty performed using the PiGalileo Revision Navigation instruments.

Figure 2 Centre of rotation using the PiGalileo Revision Navigation software. Kinematic analysis of the centre of rotation of the hip using 6 leg positions in different conditions of flexion and add/abduction.

Figure 3 Mechanical axis - femur. The distal definition of the femoral mechanical axis using the PiGalileo Revision Navigation software.

Figure 4 Mechanical axis - tibia. This measurement determines the tibial mechanical axis and therefore the extension of the mechanical axis, as defined for the femur.

Figure 5 Early range of motion. Encompassing varus/valgus, in extension/flexion, this measurement tests the “initial stability” of the existing implant to establish a “before” and “after” illustration.

Figure 6 Presentation of a “best-fit” proposal.