| 摘要 |
PCT No. PCT/GB97/03069 Sec. 371 Date May 5, 1999 Sec. 102(e) Date May 5, 1999 PCT Filed Nov. 7, 1997 PCT Pub. No. WO98/20800 PCT Pub. Date May 22, 1998A broach for shaping a medullary cavity in a bone to receive an orthopaedic prosthesis which is tapered inwardly in a direction from its proximal end toward its distal end. The broach has (a) a proximal portion on which a plurality of cutting teeth are arranged to cut the internal surface of the cavity to receive the broadened proximal portion of the prosthesis, (b) a plug portion at or towards the distal end of the broach, and (c) an elongate connecting portion by which the plug portion is connected to the proximal portion. The transverse dimension of the connecting portion is less than that of the plug portion and the proximal portion, and the width of the plug portion is greater at a point between its ends than at any other point along its length, the surface at the point of greatest width being convex when the broach is viewed from the side. |
