Abstract: A hip stem centralizer datum guide and method are provided for positioning a proximal portion of a hip stem component within bone cement in an intramedullary canal of a femur. The datum guide is positionable in a predetermined position relative to the intramedullary canal and is able to create a datum that records the predetermined hip stem component position relative to the intramedullary canal. The datum is able to be referenced to position the hip stem component in the predetermined hip stem component position in the bone cement in the intramedullary canal.

Abstract: An adjustable resection guide is provided for guiding cutting of the tibia and/or femur during knee replacement surgery.

Abstract: A hip stem centralizer datum guide (40, 100, 200, 300) and method are provided for positioning a proximal portion of a hip stem component (44) within bone cement in an intramedullary canal of a femur. The datum guide is positionable in a predetermined position relative to the intramedullary canal and is able to create a datum (70, 72, 74, 76, 120, 220, 302) that records the predetermined hip stem component position relative to the intramedullary canal. The datum is able to be referenced to position the hip stem component in the predetermined hip stem component position in the bone cement in the intramedullary canal.

Abstract: A mobile bearing unicondylar tibial knee prosthesis includes a tibial base plate and a tibial articular surface component. The inferior surface of the articular surface component engages the superior surface of the base plate in sliding relationship. The tibial articular surface and a stop on the tibial base plate define a tab and groove engagement between them such that the tibial articular surface component is permitted to slide anteriorly-posteriorly on the tibial base plate while movement of the tibial articular surface component superiorly away from the base plate is restricted.

Abstract: An adjustable resection guide is provided for guiding cutting of the tibia and/or femur during knee replacement surgery.

Abstract: The present invention provides a cut block for cutting the femur and tibia during knee replacement surgery.

Abstract: The present invention provides a mobile unicondylar tibial knee prosthesis for repairing a damaged knee joint.

Abstract: An orthopedic knee component for implanting within a single compartment of a human knee includes, in a first embodiment a tibial tray having a superior surface having a plurality of tabs disposed along an exterior edge thereof, a bearing component having a superior surface adapted to articularly engage a femoral knee prosthesis and a circumferential groove disposed therearound with which the tabs of the tibial tray cooperatively engage such that the bearing component is movable relative to the tibial tray.

Abstract: A provisional orthopedic prosthesis having a first provisional component and an optional second component. The provisional prosthesis may be a partial knee prosthesis and is used to assess the fit of a permanent prosthesis having first and second components. The first provisional component has a size which differs from the first permanent component and is mountable on a bone which has been only partially prepared to receive the first permanent component. Providing a provisional component which is mounted on a partially prepared bone, simplifies the preparation of the bone for a differently sized component if the provisional indicates that the preliminarily selected permanent component is incorrectly sized.

Abstract: A provisional orthopedic prosthesis having a first provisional component and an optional second component. The provisional prosthesis may be a partial knee prosthesis and is used to assess the fit of a permanent prosthesis having first and second components. The first provisional component has a size which differs from the first permanent component and is mountable on a bone which has been only partially prepared to receive the first permanent component. Providing a provisional component which is mounted on a partially prepared bone, simplifies the preparation of the bone for a differently sized component if the provisional indicates that the preliminarily selected permanent component is incorrectly sized.

Abstract: A provisional orthopedic prosthetic component and a removable guide element. The provisional component may be mounted to a bone prior to fully preparing the bone for receiving a corresponding permanent prosthetic component to preliminarily assess the fit of the permanent prosthetic component. The guide element is then attached to the provisional component. The guide element is engaged with a surgical tool to position the tool for preparing the bone for the permanent prosthetic component. In an alternative embodiment, the provisional component is an assembly of first and second provisional components. After mounting the provisional assembly on a partially prepared bone, the second provisional component is interchanged with a guide element which is mounted on the first provisional component. The guide element is used to position a surgical tool relative to the first provisional component. Both embodiments may be mounted on a distal femur and define a single-condylar shaped projection.

Abstract: A surgical instrument for taking measurements during orthopaedic surgery such as knee replacement procedures. The instrument includes two reference elements which each have an outwardly facing registry surface. The instrument includes a measurement guide which has indicia related to a linear distance between the two registry surfaces and an angular orientation between the two registry surfaces. The reference elements are biased apart and the measurement guide responds contemporaneously with the relative movement of the two reference elements. One of the registry surfaces may be an articulating surface for engagement with a provisional femoral component. The instrument may include a housing from which two elongate members are biasingly projected to support one of the reference elements and the indicia corresponding to the angular orientation of the two registry surfaces may be a second linear measurement corresponding to the distance between the two registry surfaces at a second location.

Abstract: An orthopaedic stem inserter grips and inserts a prosthetic implant having a stem into a prepared opening in a bone. A handle includes a housing, a rotating knob connected to a first end of the housing, and an elongate element connected to the knob and extending through the housing to a second end of the housing. A body includes a pair of jaws, with each jaw being configured to grip the implant. One of the jaws is movable in directions toward and away from the other jaw. A geared rack is connected with the movable jaw. A first gear is connected with the rack, and a second gear is connected with the elongate element and selectively enmeshes with the first gear. A quick release lever is pivotally attached to the handle and has an engaging portion which engages the second gear. The quick release lever moves the second gear toward and away from the first gear upon pivotal movement relative to the handle and thereby respectively enmeshes and demeshes the first and second gears.