Abstract: An attachment for a surgical instrument including a drive input hub for connection to a power source; a drive output hub for connection to a surgical instrument; and a body connecting the drive input hub to the drive output hub, the body including a mechanism for transferring drive from the input hub to the output hub, and wherein the body, the drive input hub and the drive output hub are at least in part not coaxial. A method for surgically preparing a bone using the attachment is also provided.

Abstract: An attachment for a surgical instrument including a drive input hub for connection to a power source; a drive output hub for connection to a surgical instrument; and a body connecting the drive input hub to the drive output hub, the body including a mechanism for transferring drive from the input hub to the output hub, and wherein the body, the drive input hub and the drive output hub are at least in part not coaxial. A method for surgically preparing a bone using the attachment is also provided.

Abstract: The present invention provides an implant (1) comprising a hollow body (2) having an opening (8), the body (2) having an inner (3) and an outer (4) surface, wherein the inner surface (3) of the body (2) has a surface structure (9) that enables bone in-growth. The present invention also provides a method of implantation, comprising: preparing a resected bone with an optional cavity in the bone canal; providing such an implant (1); and implanting the implant.

Abstract: An attachment for a surgical instrument, comprising: a drive input hub for connecting, in use, to a power source; a drive output hub for connecting, in use, to a surgical instrument; and a body connecting the drive input hub to the drive output hub, the body comprising means for transferring drive from the input hub to the output hub, wherein the body, the drive input hub and the drive output hub are at least in part not coaxial. A method for surgically preparing a bone using such an attachment.

Abstract: A femoral component of a knee prosthesis comprises a femoral flange from an inner end of which extend lateral and medial condylar parts which are interconnected by a box-like bridging part at an intercondylar groove. The interior surface of the femoral component has six discrete flat sections, with the sixth flat section which extends to a free end of the femoral component being angled relative to a plane normal to the third flat section and to the length of the intercondylar groove. Also disclosed is a trial femoral component and a method of use thereof to prepare a femur for the fitting of the femoral component of the prosthesis.

Abstract: A knee prosthesis comprises a femoral component, a tibial component and a bearing component between the femoral and tibial components. The femoral component defines medial and lateral condyles and an intercondylar box, and the bearing component has respective surfaces matching the condylar surfaces and engaging therewith when the knee is extended over a first range of flexion. The femoral component defines at the area of the intercondylar box a cam and a follower is defined by the bearing component, the cam and following engaging over a second range of flexion.