Abstract: Systems and apparatuses including a tibial insert for replacement of a knee joint of a patient are disclosed. The insert can comprise a proximal surface configured to interface with a bearing, a post and a distal surface. The post can extend from the proximal surface and can be configured to be received in a recess in the bearing. The bearing can be configured to pivot about the post to move relative to the proximal surface. The distal surface can be spaced from the proximal surface and can be configured to interface with a tibial baseplate. The distal surface can be configured with a connection mechanism to connect with the tibial baseplate.

Abstract: Methods, systems and apparatuses including apparatuses that can be used in knee replacement procedures are disclosed. According to one example, a method is disclosed that can include determining a desired flexion space between a tibia and a femur with the patient's knee joint oriented in flexion, referencing a tibia resection guide along the tibia a distance from the desired flexion space, resecting a proximal end portion of the tibia with the tibia resection guide, inserting an intramedullary rod into the femur with the patient's knee joint in flexion, tensioning the patient's knee joint to create a flexion gap by separating the tibia and the femur, sequent to tensioning the patient's knee joint, reorienting the femur into extension relative to the tibia and re-tensioning the patient's knee joint to create an extension gap that substantially matches the flexion gap.

Abstract: A method for preparing surgical kits for use during a surgery includes preparing a pre-operative surgical plan for a patient and selecting a set of surgical instruments based on the pre-operative surgical plan. The set of surgical instruments includes at least a general instrument, a first size-specific instrument, a patient-specific instrument, and a surgeon-specific instrument. The general instrument is selected from a predetermined group of off-the-shelf instruments. The first size-specific instrument has a first size selected from predetermined sizes. The patient-specific instrument includes a three-dimensional contoured engagement surface configured to nest into a portion of a native anatomy in a single location. The surgeon-specific instrument is selected based on a surgeon preference and is a different instrument than the selected general instrument, first size-specific instrument, and patient-specific instrument.

Abstract: An orthopedic device includes a drill guide configured to be mounted on a patient-specific alignment guide for intraoperatively confirming alignment of the patient-specific alignment guide relative to a bone. The patient-specific alignment guide includes first and second referencing holes. The drill guide includes a main body with a first coupling member and a second coupling member. The first and second coupling members are configured to be received within the first and second referencing holes, respectively. The first and second coupling members each include corresponding first and second drill openings configured to align with the first and second referencing holes, respectively. The drill openings each guide a drilling tool toward the bone to drill corresponding holes in the bone. The main body also includes an alignment confirmation feature configured for confirming alignment of the patient-specific alignment guide relative to the bone before drilling holes in the bone.

Abstract: A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.

Abstract: An orthopedic instrument for knee arthroplasty includes an anterior-posterior sizer assembly, a tensor assembly and a rotation mechanism. The sizer assembly includes a stylus, a sizer body including medial and lateral posterior feet extending substantially perpendicularly from the sizer body, and a sizer slider that can slide relative to the sizer body along a medial-lateral direction relative to a patient's knee. The tensor assembly includes a tensor frame having a central portion, medial and lateral wings extending at an angle from the central portion, and medial and lateral posterior feet extending substantially perpendicularly to the central portion. The rotation mechanism includes a portion coupled to the tensor frame of the tensor assembly and a portion coupled to the sizer body. The rotation mechanism is configured to rotate the medial and lateral posterior feet of the sizer body relative to the tensor frame toward a lateral side of the patient's knee.

Abstract: A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.

Abstract: A method of sizing and balancing a knee including: placing an integrated orthopedic instrument in contact with a resected distal femoral surface of a femur of a knee in flexion such that medial and lateral posterior feet of a tensor frame of the instrument are in contact with posterior condyles of the femur and such that medial and lateral posterior feet of a sizer body of the instrument are positioned on a spacer placed on a resected proximal surface of the patient's tibia; securing first and second wings extending from a central portion of the tensor frame on the resected distal femoral surface; rotating the sizer body relative to the tensor frame via a rotation mechanism that connects the sizer body and the tensor frame to balance the ligaments; and sizing the patient's femur by moving a stylus coupled to the sizer body on an anterior surface of the femur.

Abstract: An orthopedic device includes a drill guide configured to be mounted on a patient-specific alignment guide for intraoperatively confirming alignment of the patient-specific alignment guide relative to a bone. The patient-specific alignment guide includes first and second referencing holes. The drill guide includes a main body with a first coupling member and a second coupling member. The first and second coupling members are configured to be received within the first and second referencing holes, respectively. The first and second coupling members each include corresponding first and second drill openings configured to align with the first and second referencing holes, respectively. The drill openings each guide a drilling tool toward the bone to drill corresponding holes in the bone. The main body also includes an alignment confirmation feature configured for confirming alignment of the patient-specific alignment guide relative to the bone before drilling holes in the bone.

Abstract: A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.

Abstract: A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.

Abstract: Systems including a provisional tibial prosthesis system are disclosed. The provisional system can include a tibial component, a base component, and a shim component. The tibial component can have a proximal surface and a distal surface, the distal surface can be configured to seat on a resected proximal surface of a tibia. The base component can have a proximal surface and can be configured to couple with the tibial component when disposed on the proximal surface thereof. The shim component can have a proximal surface and a distal surface. The proximal surface can be configured as an articulating surface sized and shaped to articulate with a femoral prosthesis and the distal surface can be configured to couple with the base component at the proximal surface thereof.

Abstract: A method of planning and preparing for a total knee arthroplasty procedure, the method comprising: generating three-dimensional models of a tibia and a femur of a patient; sizing the tibia and the femur to within a range based on the three-dimensional models; selecting a resection tool for each of the tibia and femur based on the three-dimensional models; and packaging the resection tools. A method of planning and preparing for a surgical procedure can comprise: generating a three-dimensional bone model for one or more bones; sizing the one or more bones based on the three-dimensional model; recording a surgical plan based on the three-dimensional bone model; selecting a first surgical tool for the one or more bone based on the surgical plan; and evaluating selection of a second surgical tool based on a performance parameter of the first surgical tool.

Abstract: A method for preparing a femur and a tibia to receive implants. The method includes mapping location of a femoral guide to a coordinate system using a femoral position sensor mounted to at least one of the femoral guide or another femoral surgical device during preparation of the femur to receive a femoral implant. The method further includes mapping location of a tibial guide to the coordinate system using a tibial position sensor mounted to at least one of the tibial guide or another tibial surgical device during preparation of the tibia to receive a tibial implant.

Abstract: A prosthetic knee joint assembly includes a femoral component and a bearing that supports articulation of the femoral component. The assembly further includes a tibial tray. Furthermore, the assembly includes a ligament link operably coupled to the tibial tray or the femoral component via a coupling component. The ligament link extending through the other of the tibial tray or the femoral component to couple to the respective one of the femur or tibia. The ligament link extends between first and second ends and includes an outer wall defining an interior longitudinal passage portion. First and second apertures extend through the wall. The first end extends through the first and second apertures and the longitudinal passage portion to define a first adjustable loop, and the second end extends through the first and second apertures and the longitudinal passage portion to define a second adjustable loop.

Abstract: A method for pre-operative orthopedic planning includes obtaining only a high-resolution knee-joint scan of a patient, determining hip rotation center and ankle rotation center from anthropometric data based on personal data of the patient, and determining a mechanical axis of the knee joint based on the anthropometric data. The method also includes preparing at least a two-dimensional image model of the knee joint using the knee-joint scan and the determined mechanical axis, and preparing a pre-operative surgical plan based on the image of the knee joint.

Abstract: A method for pre-operative orthopedic planning includes obtaining only a high-resolution knee-joint scan of a patient, determining hip rotation center and ankle rotation center from anthropometric data based on personal data of the patient, and determining a mechanical axis of the knee joint based on the anthropometric data. The method also includes preparing at least a two-dimensional image model of the knee joint using the knee-joint scan and the determined mechanical axis, and preparing a pre-operative surgical plan based on the image of the knee joint.

Abstract: A patient-specific guiding system for guiding an instrument relative to a portion of an anatomical feature of a patient. The patient-specific guiding system includes a patient-specific guide. The guide includes a first portion having a first patient-specific inner surface that conforms to a first surface of the anatomical feature and an outer surface opposite the first patient-specific inner surface. The first portion also includes a guide surface for use in guiding the instrument relative to the anatomical feature. The guide also includes a second portion having a second patient-specific inner surface that conforms to a second surface of the anatomical feature and an outer surface opposite the second patient-specific inner surface. The second portion is removably connected to the first portion.

Abstract: A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.

Abstract: An orthopedic device includes a femoral implant having a non-custom internal bone engagement surface. The femoral implant includes at least nine parameters adjusted preoperatively to correspond to a specific patient. The parameters can include patient-specific lengths, such as, for example, medial and lateral condyle widths and notch height, and patient-specific medial and lateral angles.