An implant stem (1, 2) for implantation in a femur, comprising: a base portion(3) disposed at the proximal end (4) of the stem and a stem portion (5) extendingto the distal end (6) of the stem, wherein the base portion (3) has an engagementmeans (7) for engaging, in use, with the resected end of the femur. An implant comprisingsuch a stem (1, 2) and a head. A method for implanting such implants in a femur.
