Abstract: An impaction cradle (50) for supporting a femoral (10) or tibial (70) 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.

Abstract: An impaction cradle (50) for supporting a femoral (10) or tibial (70) 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An impaction cradle (50) for supporting a femoral (10) or tibial (70) 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.

Abstract: Methods, techniques and apparatuses are disclosed including exemplary methods of performing a knee arthroplasty of the tibia. One exemplary method can include determining at least a depth of a distal fixation feature of a tibial implant, and forming a metaphyseal recess in a proximal portion of the tibia. The recess can be configured to receive the distal fixation feature therein and can be sized to exceed at least the depth of the distal fixation feature such that when a distal surface of the tibial implant contacts a proximal surface of the proximal portion of the tibia and the distal fixation feature is received in the metaphyseal recess, a gap remains between the distal fixation feature and one or more surfaces that form a portion of the metaphyseal recess.

Abstract: According to one example, a provisional system for a knee arthroplasty is disclosed. The system can include any one or combination of a first provisional component, a second provisional component, a stem provisional assembly and a fastener. The first provisional component can be configured to be disposed on a resected bone surface. The second provisional component can be configured to be disposed in a first recess beneath the resected surface of the bone. The stem provisional assembly can be configured to be disposed in a second recess, the stem provisional assembly configured to be engageable in vivo to position the first provisional component on the resected surface of the bone. The fastener can be configured to couple the first provisional component, the second provisional component and the stem provisional assembly together as an assembly.

Abstract: 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.

Abstract: 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.

Abstract: Methods, techniques and apparatuses are disclosed including exemplary methods of performing a knee arthroplasty of the tibia. One exemplary method can include determining at least a depth of a distal fixation feature of a tibial implant, and forming a metaphyseal recess in a proximal portion of the tibia. The recess can be configured to receive the distal fixation feature therein and can be sized to exceed at least the depth of the distal fixation feature such that when a distal surface of the tibial implant contacts a proximal surface of the proximal portion of the tibia and the distal fixation feature is received in the metaphyseal recess, a gap remains between the distal fixation feature and one or more surfaces that form a portion of the metaphyseal recess.