Zimmer Gmbh

Tim Yoko

Brian Edward Roach

Vijayraj G Nangli

Jeffery A VanDiepenbos

Amanda Szalkowski

Brian D Earl

Nolan C Jones

Anthony Romano

Steven E Dietzel

Joseph C Capek

Joseph Arthur Azbell

Jeffery A Vandiepenbos

Systems and methods for reaming an intramedullary canal of a long bone comprise a trial stem configured to extend into the long bone along an insertion axis and a guide device comprising an adapter configured to couple to the trial stem and a reaming guidepost extending from the adapter along a guide axis, wherein the guide axis and the insertion axis are non-aligned. A method of reaming an intramedullary canal of a long bone to form a complex shaped socket can comprise inserting a stem into the intramedullary canal along an insertion axis, connecting a guide device to the stem, the guide device comprising a guidepost extending along a guide axis and guiding a cannulated reamer along the guidepost to remove bone from the intramedullary canal to form the complex shaped socket, wherein the guide axis and the insertion axis are non-aligned.

Systems for guided reaming of complex shapes

An impaction cradle () for supporting a femoral () or tibial () implant on a planar support surface such as a tabletop. The impaction cradle can orient the femoral or tibial implant on the impaction cradle such that an attachment feature of the implant for an intramedullary stem or metaphyseal sleeve is aligned with a vertical plane or parallel to the true vertical axis. In this position, the intramedullary stem or metaphyseal sleeve can be impacted along a generally vertical axis to drive the intramedullary stem or metaphyseal sleeve along an impaction axis parallel to a true vertical axis or positioned within a vertical plane. The generally vertical impaction angle can be easier for medical practitioners to accurately impact the intramedullary stem or metaphyseal sleeve, which lowers the risk of damage to the intramedullary stem, metaphyseal sleeve, or the femoral or tibial implant.

Impaction cradle

According to one example, a for revision knee arthroplasty is disclosed. According to this example, the method can include shaping a bone of a patient to create one or more recesses therein, selecting a stem provisional, disposing the stem provisional within the one or more recesses, and assembling in vivo the stem provisional with both a first provisional component configured to simulate a shape of one of a tibial tray implant or a femoral implant and a second provisional component configured to simulate a shape of at least one of a sleeve component, a cone component or a keel component of an implant.

Revision knee arthroplasty methods and instruments

A prosthetic implant system for reconstructing a knee joint comprises a prosthetic implant and sleeve. The prosthetic implant comprises a tibial tray component for reconstructing a tibia of the knee joint, and a stem configured to extend from the tibial tray component to anchor the tibial tray component in the tibia of the knee joint. The sleeve comprises an outer wall configured to engage with bone, and an inner bore configured to receive the stem. The inner bore is shaped to couple to the prosthetic implant at a first location proximate the tibial tray component while surrounding the stem, and uncouple from the prosthetic implant at a second location spaced from the first location while still surrounding the stem. Methods employing the prosthetic implant system can comprise intraoperatively determining to use the sleeve in a coupled or un-coupled configuration based on a depth of a broach into a broached channel.

Systems and methods for attaching sleeve or cone in prosthetic implant having a stem

A surgical instrument including a shaping instrument for shaping a bone as well as an impaction/extraction device for use with the shaping instrument is disclosed.

Surgical instrument for impacting and extracting a shaping instrument and a shaping instrument useable therewith

Orthopedic procedures can involve tools or other instruments that assist a surgeon. The surgical instrument including a cutting instrument configured to shape bone, including an impaction/extraction device, is disclosed. Methods of shaping a bone including the surgical instrument with the cutting instrument including an impaction/extract device are disclosed.

Surgical instrument for impacting and extracting a cutting instrument

An apparatus includes a cut guide including a locking area, an alignment guide, and a connect mechanism to connect the cut guide to the alignment guide, wherein the connect mechanism includes a cone lock connect mechanism configured to engage with the cut guide locking area.

Cone lock quick connect mechanism

A surgical instrument including a cutting instrument for shaping a bone as well as an impaction/extraction device for use with the cutting instrument is disclosed.

Growing community of inventors

Granger, IN, United States of America

Tim Yoko