Glenoid prosthesis and a modular system with glenoid prostheses
AssigneeSulzer Orthopedics Inc.
InventorRoland Schoch
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Abstract
A glenoid prosthesis including a bearing shell, the reverse side of which has a plurality of anchoring pins which are arranged to one another. At least one anchoring pin has a coupling element, and at least one sleeve with a fitting securable coupling element and an outer anchoring structure is provided in order to selectively enable a cementing in of the anchoring pin or a mechanical hammering in of the pin together with the sleeve which is fixed to it.
Claims11
A glenoid prosthesis comprising a plastic bearing shell including a plurality of integral anchoring pins that are arranged parallel to one another at a reverse side of the bearing shell, wherein at least one anchoring pin has a thread element and a corresponding metal sleeve that is preoperative solidly screwable to the at least one anchoring pin, and wherein the corresponding metal sleeve is provided with protruding longitudinal ribs for a mechanical hammering in of the metal sleeve into an undersized bone hole.
A modular system comprising glenoid prosthesis, each prosthesis comprising a plastic bearing shell including a plurality of integral anchoring pins that are arranged parallel to one another at a reverse side of the bearing shell, wherein at least one anchoring pin has a thread element and a corresponding metal sleeve that is preoperative solidly screwable to the at least one anchoring pin, and wherein the corresponding metal sleeve is provided with protruding longitudinal ribs for a mechanical hammering in of the sleeve into an undersized bone hole, the modular system consisting of bearing shells with different outer dimensions, wherein the thread diameter of the pins are equally large for all bearing shells in order to be able to manage with one sleeve size.
Dependencies are inferred from the claim text.