Sulzer Orthopedics Inc.

Zimmer Gmbh

James W Burrows

Erin M Johnson

Aaron A Hofmann

Charles H Perrone, Jr

John L Wheeler

Mark B Lester

Steve Brown

Kenneth Robert Konya

The present invention is directed to a rotating/non-rotating tibia base plate/insert system. In one illustrative embodiment, the device comprises a tibia base plate, an insert adapted to be positioned above the base plate, and at least one removable pin that, when installed, engages at least a portion of the insert and the base plate to thereby prevent relative rotation between the insert and the base plate. In one illustrative embodiment, the method comprises obtaining a prosthetic knee assembly comprised of a tibia base plate, a tibia insert and a removable pin, the assembly being adapted to be configured in a first state such that the tibia insert may rotate relative to the base plate or in a second state such that said tibia insert cannot rotate relative to said base plate, making at least one incision adjacent a patient's knee, installing the prosthetic knee assembly in the patient, wherein the removable pin is removed such that the assembly is in the first state wherein the tibia insert may rotate relative to the tibia base plate, and closing the incision.

Rotating/non-rotating tibia base plate/insert system

An implantable orthopedic knee joint prosthesis. A femoral component has a first body including a surface for engaging femoral bone and a second body including a surface for engaging another component. Means are provided for hingedly connecting the first and second bodies together for relative pivoting motion about a fixed pivot axis. A tibial component has a baseplate that includes a surface for engaging tibial bone and a surface for engaging another component. An adapter bearing is disposed intermediate the second body and the baseplate and includes means for engagement with and affixation to the baseplate, and means for engagement with and affixation to the second body. A keel depends from the tibial bone engaging surface of the baseplate.

Implantable hinged knee prosthesis having tibial baseplate

An implantable orthopedic prosthesis has a macro/micro-textured bone and soft tissue attachment surface to which a spiked washer is clamped by a threaded bolt received through said washer and threaded into said prosthesis. Soft tissue is secured to the prosthesis by clamping between said washer and said soft tissue attachment surface. The tissue attachment surface is arranged as a regular grid of depressions separated by orthogonal ridges formed by electrodischarge machining of the prosthesis using a machining electrode having a mold-opposite surface texture with a micro-textured roughened surface finish. The spacing of the spikes is and integer multiple of the spacing of the depressions to assure registry of the spikes with the depressions.

Implantable orthopedic prosthesis having tissue attachment surface and

A variety of surgical instruments facilitate implantation of a femoral stem component of an implantable prosthesis. A skeletal member is prepared by securing a reamer in the member. A broach is mounted on the reamer for broaching the member. A variety of adapters are selectively used with a head trial to check for location of the head trial. After trial placement is satisfactory, the instruments are removed so that the prosthesis can be implanted.

Instruments for forming bony cavity for implantable femoral, hip

A plastic insert is extracted from a metal acetabular shell by an extractor device which includes a seat positioned on the insert. A first guide member is attached to the seat. A second guide member is mounted for lateral movement with the first guide member. An extractor is mounted on the second guide member. The second guide member is movable relative to the first guide member for positioning the extractor adjacent the shell. A fastener is inserted through the first guide member and into the insert for securing the first guide member to the insert. The extractor is advanced into engagement with the shell so that the fastener withdraws the insert from the shell.

Acetabular insert extractor and method for use

A set of modular components from among which an implantable orthopedic hip prosthesis can be assembled. First and second implantable orthopedic femoral hip stem prosthesis each have a neck, the neck having a male conical taper surface. An implantable orthopedic femoral head prosthesis has a female conical taper surface. The respective male and female conical taper surfaces are sized and configured for mutual taper-locked interconnection if engaged, but at least one of the first and second implantable orthopedic femoral hip stem prosthesis is keyed in combination with the implantable orthopedic femoral head prosthesis to prevent engagement of the respective male conical taper surface with the female conical taper surface.

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Cedar Park, TX, United States of America

James W Burrows