Abstract: An arthroplasty system may include a first prosthesis to be fixed to a first bone of a joint, a second prosthesis to be fixed to a second bone of the joint for articulation with the first prosthesis, and one or more adapters to be fixed to the first prosthesis for articulation with the second prosthesis to modify the stability of the second prosthesis relative to the first prosthesis. The system may include one or more articular inserts to be coupled to the second prosthesis for articulation with the first prosthesis and/or the adapter(s). The articular inserts may be fixed or mobile bearing relative to the second prosthesis. Each adapter and corresponding articular insert may modify stability differently.

Abstract: A total knee prosthesis system that includes a guide having first and second wedges each having a thickness configured to be located between the tibial and femoral component. When the first and second wedges are located between the tibial and femoral component, the first and second wedges align the first axle opening of the tibial component with the second axle opening of the femoral component for receipt of an axle. The guide includes a guide recess extending between the first and second wedges and a post extending into the guide recess. The guide also includes a bridge connected to and extending between the first and second wedges such that the bridge at least partially defines the guide recess.

Abstract: A prosthesis system of the present invention includes a monoblock stem extension including a proximal portion having a first neutral axis; and a distal portion defined by a longitudinal cylindrical shaft having a second neutral axis, wherein the second neutral axis is parallel and offset by a distance ? from the first neutral axis; and an eccentric bushing arranged coaxial around the cylindrical shaft of the monoblock stem extension, the eccentric bushing including an external cylindrical shaft having a third neutral axis; and an internal cylinder having a fourth neutral axis that is substantially co-linear with the second neutral axis of the monoblock stem extension, wherein the third neutral axis is parallel and offset by a distance ? from the fourth neutral axis.

Abstract: An arthroplasty system may include a first prosthesis to be fixed to a first bone of a joint, a second prosthesis to be fixed to a second bone of the joint for articulation with the first prosthesis, and one or more adapters to be fixed to the first prosthesis for articulation with the second prosthesis to modify the stability of the second prosthesis relative to the first prosthesis. The system may include one or more articular inserts to be coupled to the second prosthesis for articulation with the first prosthesis and/or the adapter(s). The articular inserts may be fixed or mobile bearing relative to the second prosthesis. Each adapter and corresponding articular insert may modify stability differently.

Abstract: The present invention provides an artificial joint, including a femur connecting device, a tibia connecting device, and a receiving device, wherein the femur connecting device is connected and fixed with the receiving device and the tibia connecting device via a fixing member unparallel to a joint-twisting axis, and wherein cushion member receives the femur connecting device via a pivot-receiving surface and receives the tibia connecting device via a twist-receiving surface, thereby providing an durable and reliable artificial joint.

Abstract: An orthopedic knee prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The femoral component includes a condyle surface curved in the sagittal plane. The radius of curvature of the condyle surface decreases gradually between early-flexion and mid-flexion. Additionally, in some embodiments, the radius of curvature may be increased during mid-flexion.

Abstract: A Canine internal stifle stabilizing (CISS) system is provided as a three part modular, stifle stabilizing device that can be permanently or temporarily surgically implanted and attached onto the medial side of the distal femur and proximal tibia of quadrupeds. The stabilizing device is centered over the medial aspect of the quadruped stifle joint. The device includes three parts: a femoral component, a tibial component and an articular sliding insert component. The tibial and femoral components are fastened to the medial aspect of the femur and tibia by a varying number of fasteners. The distal end of the femoral component contains a ball and stem. The ball and stem is attached to the femoral component. The proximal tibial component has a rectangular space that accepts and holds the articular sliding insert component, such as by a pressure fit into the rectangular space provided on the proximal tibial component.

Abstract: An artificial knee joint comprising a femoral component and a tibial plate is provided. The femoral component includes a medial condyle, a lateral condyle, a first sliding surface for coupling the medial and lateral condyles, while leaving an opening therebetween, and a second sliding surface above the first sliding surface. The tibial plate includes a medial fossa, a lateral fossa, a post insertable into the opening, a third sliding surface which the first sliding surface contacts at a posterior surface of the post, and a fourth sliding surface which the second sliding surface contacts behind the post. The artificial knee joint is configured to move in a first sliding state in which the first sliding surface is in contact with the third sliding surface, or a second sliding state in which the second sliding surface is in contact with the fourth sliding surface, according to a flexion angle.

Abstract: An artificial knee joint is provided whose rollback amount and roll ratio are small in slight flexion and large in deep flexion. In the artificial knee joint, a femoral component 20 includes a medial condyle 21, a lateral condyle 22, a first sliding surface 24 for coupling posterior ends of the medial condyle 21 and the lateral condyle 22, while leaving an opening 23 therebetween, and a second sliding surface 25 positioned above the first sliding surface 24. A tibial plate 30 includes a medial fossa 31, a lateral fossa 32, a post 36 protruding superiorly from between the media fossa 31 and the lateral fossa 32 to be inserted into the opening 23, a third sliding surface 34 with which the first sliding surface 24 is in contact at a posterior surface of the post 36, and a fourth sliding surface 35 with which the second sliding surface 25 is in contact behind the post 36. The first and fourth sliding surfaces 24 and 35 are convex curved surfaces.

Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available. The meniscal component includes a mechanism for preventing lift off of the meniscal component from the tibial component, while allowing rotation of the meniscal component relative to the tibial component.

Abstract: A system for manipulating energy transferred by members defining a joint. The system includes a first attachment structure configured to be attached to a first member of the joint and a second attachment structure configured to be attached to a second member of the joint. There is also an adjustable energy absorbing device attached to the first attachment structure and second attachment structure, wherein adjusting the energy absorbing device changes the load manipulating characteristics of the energy absorbing device.

Abstract: A system for manipulating energy transferred by members defining a joint. The system includes a first attachment structure configured to be attached to a first member of the joint and a second attachment structure configured to be attached to a second member of the joint. There is also an adjustable energy absorbing device attached to the first attachment structure and second attachment structure, wherein adjusting the energy absorbing device changes the load manipulating characteristics of the energy absorbing device.

Abstract: A modular femoral joint prosthesis includes a femoral component having a post extending therefrom, a femoral stem, and a femoral sleeve configured to be coupled to the post of the femoral assembly and to the femoral stem. The femoral sleeve is bowed posteriorly in the sagittal plane.