A modular knee prosthesis system includes a femoral component (10) having a stem (16), a plurality of different sizes of sleeves (24) mountable on the stem, and a plurality of different sizes of augments (340) mountable on the femoral component. The system is modular, and provides the surgeon with the option of distally offsetting the joint line by selecting the size of sleeve that will provide the desired joint line. The different sizes of sleeves have different axial lengths but share a common geometry along a substantial part of their lengths so that the same bone cavity will accept multiple sizes of sleeves.
