Variable stiffness intramedullary stem

Details Variable stiffness intramedullary stem Variable stiffness intramedullary stem

A - Human Necessities

61

F

A61F 2/30 (2006.01) A61F 2/28 (2006.01)

Patent

CA 2592431

A variable stiffness stem component for intramedullary fixation in total joint replacement implants or in a segmental replacement system. The stem component has a shaft with a proximal end, a distal end, and a longitudinal length therebetween. The diameter of the shaft is approximately constant along the longitudinal length. A taper or threaded connection may be provided adjacent the proximal end of the shaft for assembly to another implant component. At least three flutes 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.

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