Abstract: A field generator for use in a surgical targeting system is disclosed. The field generator includes a mounting structure including elements that are configured to receive components of an electromagnetic field generator. The elements are disposed on the mounting structure at locations and orientations relative to each other. The field generator includes at least one covering formed over the mounting structure, wherein, in use, the locations and orientations of the elements relative to each other remain substantially unaltered after exposure to one or more sterilization processes.

Abstract: A field generator for use in a surgical targeting system is disclosed. The field generator includes a mounting structure including elements that are configured to receive components of an electromagnetic field generator. The elements are disposed on the mounting structure at locations and orientations relative to each other. The field generator includes at least one covering formed over the mounting structure, wherein, in use, the locations and orientations of the elements relative to each other remain substantially unaltered after exposure to one or more sterilization processes.

Abstract: Systems (10, 110, 1010, 1110) for identifying landmarks (31, 131, 1028, 1128) on orthopedic implants (30, 130, 1024, 1124) are disclosed. The systems (10, 110, 1010, 1110) include a field generator (16, 116, 1016, 1116) for generating a magnetic field and an orthopedic implant (30, 130, 1024, 1124) located within the magnetic field. The implant (30, 130, 1024, 1124) includes at least one landmark (31, 131, 1028, 1128), an optional removable probe (1029, 1129) and a first magnetic sensor (32, 132, 1026, 1126).

Abstract: A system (10, 110) for identifying a landmark is disclosed. The system includes a field generator (16, 116) for generating a magnetic field, an orthopaedic implant (30, 130) located within the magnetic field, the implant having at least one landmark (31) and a first magnetic sensor (32) spaced apart from the landmark, a landmark identifier (18, 118) with a second magnetic sensor (20, 120) and a processor (12, 112) for comparing sensor data from the first and second sensor and using the set distance to calculate the position of the landmark identifier relative to the at least one landmark. The system allows for blind targeting of one or more landmarks.

Abstract: A fracture fixation system 10, 20, 30, 40, 50, 58, 70 for a fractured bone having at least two bone fragments is disclosed. The fracture fixation system 10, 20, 30, 40, 50, 58, 70 includes an orthopaedic implant 11, 21, 31, 41, 51, 60, 71, an engaging member 12, 22, 32, 43, 45, 52, 62, 72 adapted to gain purchase in at least one bone fragment, and means for applying a force to the engaging member such that the at least two bone fragments are placed in compression and prevented from rotating relative to the orthopaedic implant. The engaging member 12, 22, 32, 43, 45, 52, 62, 72 is disposed relative to the orthopaedic implant 11, 21, 31, 41, 51, 60, 71. The orthopaedic implant 11, 21, 31, 41, 51, 60, 71 may take the form of an intramedullary device, a compression plate, or a deployable material.

Abstract: A controlled removable fracture-reducing assembly for reducing a bone fracture. According to one embodiment, a controlled removable fracture reducing assembly includes an implant, a reducer, a buttress, and a locking device that engage a proximal bone fragment and a distal bone fragment. The implant is secured to the distal bone fragment by the locking device. The buttress engages the implant through an opening. The reducer contains a compressing screw that applies a force on the buttress, reducing the fracture. According to another embodiment, the reducer contains a cam mechanism which applies a force on the buttress, which does not engage the implant, that pushes the proximal bone fragment to reduce the fracture. According to another embodiment, the reducer is a jacking mechanism that pushes the proximal bone fragment while pulling the implant and distal fragment to reduce the fracture.

Abstract: A controlled removable fracture-reducing assembly (10) for reducing a bone fracture. According to one embodiment of the present invention, a controlled removable fracture reducing assembly (10) includes an implant (12), a reducer (14), a buttress (16), and a locking device (18) that engage a proximal bone fragment (2) and a distal bone fragment (4). The implant (12) is secured to the distal bone fragment (4) by the locking device (18). The buttress (16) engages the implant (12) through an opening (30). The reducer (14) contains a compressing screw (24) that applies a force (60) on the buttress (16), reducing the fracture. According to another embodiment of the invention, the reducer (114) contains a cam mechanism (124) which applies a force (186) on the buttress (116), which does not engage the implant (112), that pushes the proximal bone fragment (102) to reduce the fracture.

Abstract: Treating fractures using one or both of an implant, such as an intramedullary nail, and a fastening assembly, such as a lag screw and compression screw assembly. The implant in some embodiments has a proximal section with a transverse aperture having a non-circular cross-section that may be shaped to selectively constrain the fastening assembly within the transverse aperture. Two or more components of the fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the implant, and to cooperate to resist a force moment applied thereto. Without the presence of one of the components, such as the lag screw, another component, such as the compression screw may not resist a force moment applied thereto.

Abstract: Systems, devices and methods are disclosed for limiting compression of a fracture imposed by a lag screw of a fixation system that includes a fixation device, a lag screw and a compression screw. The disclosed devices, systems and methods prevent over-compression of a fracture by a lag screw caused by over rotation of the compression screw. Specifically, implementations of a lag screw driver and a compression screw driver are provided whereby an engagement between the lag screw driver and compression screw driver prevents any further lateral movement of the lag screw, thereby providing a complete stop to further advancement of the lag screw and any additional compression.

Abstract: A system (1010, 1110) for identifying a landmark is disclosed. The system includes a field generator (1016, 1116) for generating a magnetic field, an orthopaedic implant (1030, 1130) located within the magnetic field, the implant having at least one landmark (1028, 1128), a removable probe (1029, 1129) with a first magnetic sensor (1026, 1126), a landmark identifier (1016, 1116) with a second magnetic sensor (1020, 1120) and a processor (1012, 1112) for comparing sensor data from the first and second sensor and using the set distance to calculate the position of the landmark identifier relative to the at least one landmark. The system allows for blind targeting of one or more landmarks.

Abstract: A multi-layer, fiber-reinforced composite orthopaedic fixation device having a design selected based on a desired characteristic of the orthopaedic fixation device. The design may be selected according to a model of the device, the model defining design constraints, and the design may comprise a pattern of the fiber angle for each layer. The selection of a design may be analyzed using finite element analysis to determine whether the design will comprise the desired characteristic.

Abstract: Treating fractures using one or both of an implant, such as an intramedullary nail, and a fastening assembly, such as a lag screw and compression screw assembly. The implant in some embodiments has a proximal section with a transverse aperture having a non-circular cross-section that may be shaped to selectively constrain the fastening assembly within the transverse aperture. Two or more components of the fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the implant, and to cooperate to resist a force moment applied thereto. Without the presence of one of the components, such as the lag screw, another component, such as the compression screw may not resist a force moment applied thereto.

Abstract: A field generator for use in a surgical targeting system is disclosed. The field generator includes a mounting structure including elements that are configured to receive components of an electromagnetic field generator. The elements are disposed on the mounting structure at locations and orientations relative to each other. The field generator includes at least one covering formed over the mounting structure, wherein, in use, the locations and orientations of the elements relative to each other remain substantially unaltered after exposure to one or more sterilization processes.

Abstract: A fracture fixation system 10, 20, 30, 40, 50, 58, 70 for a fractured bone having at least two bone fragments is disclosed. The fracture fixation system 10, 20, 30, 40, 50, 58, 70 includes an orthopaedic implant 11, 21, 31, 41, 51, 60, 71, an engaging member 12, 22, 32, 43, 45, 52, 62, 72 adapted to gain purchase in at least one bone fragment, and means for applying a force to the engaging member such that the at least two bone fragments are placed in compression and prevented from rotating relative to the orthopaedic implant. The engaging member 12, 22, 32, 43, 45, 52, 62, 72 is disposed relative to the orthopaedic implant 11, 21, 31, 41, 51, 60, 71. The orthopaedic implant 11, 21, 31, 41, 51, 60, 71 may take the form of an intramedullary device, a compression plate, or a deployable material.

Abstract: A system (10, 110) for identifying a landmark is disclosed. The system includes a field generator (16, 116) for generating a magnetic field, an orthopaedic implant (30, 130) located within the magnetic field, the implant having at least one landmark (31) and a first magnetic sensor (32) spaced apart from the landmark, a landmark identifier (18, 118) with a second magnetic sensor (20, 120) and a processor (12, 112) for comparing sensor data from the first and second sensor and using the set distance to calculate the position of the landmark identifier relative to the at least one landmark. The system allows for blind targeting of one or more landmarks.

Abstract: A controlled removable fracture-reducing assembly (10) for reducing a bone fracture. According to one embodiment of the present invention, a controlled removable fracture reducing assembly (10) includes an implant (12), a reducer (14), a buttress (16), and a locking device (18) that engage a proximal bone fragment (2) and a distal bone fragment (4). The implant (12) is secured to the distal bone fragment (4) by the locking device (18). The buttress (16) engages the implant (12) through an opening (30). The reducer (14) contains a compressing screw (24) that applies a force (60) on the buttress (16), reducing the fracture. According to another embodiment of the invention, the reducer (114) contains a cam mechanism (124) which applies a force (186) on the buttress (116), which does not engage the implant (112), that pushes the proximal bone fragment (102) to reduce the fracture.

Abstract: An instrument for reduction of a bone fracture is disclosed. The instrument includes an orthopaedic surgical implant (112), an implant member (190, 200, 270), and a driving member (180, 210, 260). The implant member (190, 200, 270) has a bone engagement portion (195, 203, 275) and a driven portion (197, 208, 278). The driving member (180, 210, 260) cooperates with the driven portion (197, 208, 278) to move the implant member (190, 200, 270) and reduce the fracture. Also disclosed is a sliding compression orthopaedic implant (300). The implant (300) comprises a first implant member (310), said first implant member (310) having a transverse hole (311); and a second implant member (312) connected to said transverse hole (311), said second implant member (312) having a shank (314), and said shank (314) having a bone engagement portion (316) at a first end portion (318) and a sliding compression member (320) at a second end portion (322).

Abstract: A modular radial head system including a modular implant for replacing the head of the proximal end of a radius and for articulating with the capitellum of a humerus. The modular implant includes a modular head and an modular stem. The system further includes a modular radial head locking instrument for locking the modular head and the modular stem of the modular implant to one another. The locking instrument includes a first jaw, a second jaw, and a control mechanism for urging the first and second jaws together to provide offset axial compression of the modular head and the modular stem of the modular implant.

Abstract: A modular radial head system including a modular implant for replacing the head of the proximal end of a radius and for articulating with the capitellum of a humerus. The modular implant includes a modular head and an modular stem. The system further includes a modular radial head locking instrument for locking the modular head and the modular stem of the modular implant to one another. The locking instrument includes a first jaw, a second jaw, and a control mechanism for urging the first and second jaws together to provide offset axial compression of the modular head and the modular stem of the modular implant.

Abstract: A system including modular radial head implants, sizers for trial reduction of the joint, and instrumentation for preparing the radial head, implanting the sizers, assembling the implants.