Patents Represented by Law Firm Price, Gees & Ubell
  • Patent number: 5824098
    Abstract: A prosthetic system comprising a patellar unit to replace the femoral surface of the patella with a convex prosthesis constructed from a low-friction material and an elongate femoral prosthesis for replacing the trochlear groove without use of bone cement. The femoral prosthesis has a arcuate indentation on its upper surface to accommodate the patellar prosthesis and a lower surface with diverging, protruding vanes. The lower surface and the vanes are made of a biocompatible material that promotes bonding to living bone. The femoral prosthesis is inserted by first driving a guide rod into the distal end of the femur. Then a guide frame is inserted onto the rod to guide an instrument in the cutting of a groove in the trochlear portion of the femur. Then a second guide frame replaces the first guide frame and acts as a template for cutting slots sized to receive the vanes of the prosthesis.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: October 20, 1998
    Inventor: Daniel Stein