| 摘要 |
<p>A variable stiffness stem component (10) for intramedullary fixation in total joint replacement implants or in a segmental replacement system. The stem component has a shaft (12) with a proximal end (16), a distal end (18), and a longitudinal length therebetween. The diameter of the shaft is approximately constant along the longitudinal length. A taper or threaded connection (14) may be provided adjacent the proximal end of the shaft for assembly to another implant component. At least three flutes (20) are disposed in a portion of the length of the shaft from intermediate the proximal and distal ends extending towards the distal end. The flutes increase in one of width or depth, or a combination thereof, towards the distal end to provide variable stiffness.</p> |
