Cementless endoprosthesis

Details Cementless endoprosthesis Cementless endoprosthesis

A - Human Necessities

61

F

3/104

A61F 2/36 (2006.01) A61F 2/00 (2006.01) A61F 2/30 (2006.01)

Patent

CA 1280852

A B S T R A C T An endoprosthesis is composed of a stem tapering to the distal end thereof and a screw spindle having a broadflanged helical flank . The stem is provided with a helical slot guiding flank of spindle during assembling of the prosthesis. The flank projects outwards from both broad side faces of the stem and forms a plurality of broad flanged thin supporting ribs in the proximal portion of the prosthesis , the ribs cutting not only into the cancellous bone structure but also into the cortex. The prosthesis provides for a load transmission exclusively into the proximal femur portion, while the distal portion is free of axial loads.

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