Zimmer Orthobiologics, Inc.

Jossi Holding Ag

Daniel Nadler

Pedro Bittmann

Christian Gugler

Andreas Meyenhofer

Martin Schmidt

Jörg Auer

Simon Bodmer

Margarete K Akens

Brigitte Von Rechenberg

Pascal Bürgi

Margarete Akens

Brigitte Rechenberg

An outer shell () for a joint socket implant, in particular for an acetabular implant, which comprises a convex outer face () and a concave inner face () for receiving an inner shell. The concave inner face () has at least partially a toothing system (), in particular a circular circumferential region () thereof. Via the toothing system (), an inhibition of the rotatability of the two shells, relative to one another, can be achieved upon insertion of the inner shell into the outer shell ().

Joint socket implant

An implant, having a surface segment with at least one break line delineating an opening or recess of a closure segment which can be removed from the surface segment, is produced by first making a sub-assembly of the implant and then weakening the material in the region of the break line by material deformation.

Method for producing an implant having at least one break line

Repairs of cartilage defects or of cartilage/bone defects in human or animal joints with the help of devices including a bone part (), a cartilage layer () and a subchondral bone plate () or an imitation of such a plate in the transition region between the cartilage layer () and the bone part (). After implantation, the bone part () is resorbed and is replaced by reparative tissue only after being essentially totally resorbed. In a critical phase of the healing process, a mechanically inferior cyst is located in the place of the implanted bone part (). In order to prevent the cartilage layer () from sinking into the cyst space during this critical phase of the healing process the device has a top part (). and a bottom part (), wherein the top part () consists essentially of the cartilage layer () and the subchondral bone plate () and the bottom part () corresponds essentially to the bone part () and wherein the top part () parallel to the subchondral bone plate () has a larger diameter than the bottom part (). After implantation in a suitable opening or bore (), the cartilage layer () and the subchondral bone plate () are supported not only on the bone part () but also on native bone tissue having a loading capacity not changing during the healing process. Therefore, the implanted cartilage layer cannot sink during the healing process.

Preparation for repairing cartilage defects or cartilage/bone defects in human or animal joints

Repairs of cartilage defects or of cartilage/bone defects in human or animal joints with the help of devices including a bone part (), a cartilage layer () and a subchondral bone plate () or an imitation of such a plate in the transition region between the cartilage layer () and the bone part (). After implantation, the bone part () is resorbed and is replaced by reparative tissue only after being essentially totally resorbed. In a critical phase of the healing process, a mechanically inferior cyst is located in the place of the implanted bone part (). In order to prevent the cartilage layer () from sinking into the cyst space during this critical phase of the healing process the device has a top part () and a bottom part (), wherein the top part () consists essentially of the cartilage layer () and the subchondral bone plate () and the bottom part () corresponds essentially to the bone part () and wherein the top part () parallel to the subchondral bone plate () has a larger diameter than the bottom part (). After implantation in a suitable opening or bore (), the cartilage layer () and the subchondral bone plate () are supported not only on the bone part () but also on native bone tissue having a loading capacity not changing during the healing process. Therefore, the implanted cartilage layer cannot sink during the healing process.

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Hettlingen, Switzerland

Daniel Nadler