Sulzer Orthopedics Inc.

Werner G&uuml;ttinger

Lorenzo Spotorno

Felix Mettler

In the figures, proximal centering apparatuses ( ) for collar-less femur shaft prosthesis ( ) which can be cemented in and which can be pushed from the medial onto the shaft ( ) in the cemented region are shown. The centering apparatus ( ) has at least in the medial region a centering wedge ( ) which widens towards the proximal and which is connected via webs ( ) to a clamping apparatus ( ), with the clamping apparatus ( ) being arranged in the cement-less region of the prosthesis neck ( ) and being removable when the webs ( ) are interrupted.

Femur shaft prosthesis with a proximal centering apparatus

The figures show a cementable shaft prosthesis ( ) comprising a centering apparatus ( ) of plastic which can be pushed on at its distal shaft end ( ) and which forms a cavity ( ) to the distal shaft end ( ). Between the distal shaft end ( ) and the centering apparatus ( ) there exists a clamping connection which enables a deeper sinking in of the shaft end into the cavity in the distal direction. The clamping connection is achieved by a spigot ( ) which is formed on at the centering apparatus ( ) in the cavity ( ) and which protrudes in into a conical bore ( ) of the shaft end ( ) in the proximal direction.

Growing community of inventors

Winterthur, Switzerland

Werner Güttinger

Growing community of inventors

Winterthur, Switzerland

Werner G&uuml;ttinger

Werner Güttinger