Abstract: A magnetic tracking system for determining position and orientation of an object in three-dimensional space, the system including an electromagnet assembly including first and second electromagnets that are coaxial, non-coincident, and spaced from each other by a fixed distance, at least one magnetometer positioned at a movable location relative to the electromagnet assembly and configured to measure three orthogonal components of a magnetic field vector, and a microcontroller unit operably connected to the at least one magnetometer. The microcontroller unit is configured to control measurement of magnetic fields by the at least one magnetometer and compute a relative position and orientation of the electromagnet assembly and the at least one magnetometer in five degrees of freedom using at least two equations with two unknowns and coordinate transformation equations relating the coordinate frames of the electromagnet assembly and the at least one magnetometer.

Abstract: An instrument for locating a femoral mechanical axis and identifying the locations of at least three points in space in relation to the center of a femoral head, the instrument including a base member, an extension arm clamp translationally and pivotally attached to the base member, an extension arm translationally and pivotally attached to the extension arm clamp, a swiveling arm pivotally attached to a distal end of the extension arm, the swiveling arm including a lateral locator member at a proximal end and a medial locator member at a distal end, a bracket pivotally attached to the swiveling arm, and a locating arm removably attached to the bracket, the locating arm including a middle locator member.

Abstract: A method of performing a total knee arthroplasty including the steps of inserting a first pin into the distal femur and through the knee center, locating the femoral mechanical axis, inserting at least one additional pin into the distal femur, locating the tibial mechanical axis, sizing the femur and applying a femoral cutting block having at least one cutting guide to an end of the femur, positioning a tibial cutting block having a least one cutting guide in a cutting position relative to the tibia, aligning the femoral cutting block relative to the tibial cutting block, aligning the femur relative to the tibia, cutting the femur using the at least one femoral cutting guide, cutting the tibia using the at least one tibial cutting guide, removing the femoral and tibial cutting blocks, and positioning permanent femoral and tibial components on the cut portions of the femur and tibia, respectively.

Abstract: A tibial prosthesis including a tibial component including a tray having first and second opposing surfaces and a stem extending from the second surface of the tibial component, a tibial conversion module including a receiver portion defining a stem-receiving cavity for slideable engagement with the stem of the tibial component, wherein the stem of the tibial component is positioned within the stem-receiving cavity at a first end of the receiver portion, and an extension peg engaged with the stem-receiving cavity at a second end of the receiver portion that is opposite the first end of the receiver portion.

Abstract: A bone compacting device for compacting cancellous bone within a bone cavity, the bone compacting device including a body having a plurality of segments, wherein each segment is adjacent to at least one adjacent segment between a first end and a second end of the body, and wherein each of the plurality of segments is independently expandable to contact the cancellous bone.

Abstract: The present invention provides surgical drilling devices and methods. An exemplary surgical drilling device in accordance with the present invention comprises a housing, a retractable guide tube assembly, and a flexible cable drill. The retractable guide tube assembly includes an arcuate guide tube having a first portion that is slidingly positioned in an arcuate portion of the housing. A second portion comprising an actuating tube is slidingly positioned in a linear portion of the housing. The arcuate guide tube is controllably advancable from the housing and retractable into the housing. The flexible cable drill comprises a first portion slidingly positioned in the arcuate guide tube and a second portion slidingly positioned in the actuating tube.

Abstract: A knee implant for use in total knee arthroplasty, the implant including a femoral component having a trochlear groove and an intercondylar notch, a tibial component engaged with the femoral component, and a patellar component having an upper domed surface, wherein the domed surface is configured for at least line contact articulation with the trochlear groove of the femoral component.

Abstract: A method of performing a total knee arthroplasty including the steps of inserting a first pin into the distal femur and through the knee center, locating the femoral mechanical axis, inserting at least one additional pin into the distal femur, locating the tibial mechanical axis, sizing the femur and applying a femoral cutting block having at least one cutting guide to an end of the femur, positioning a tibial cutting block having a least one cutting guide in a cutting position relative to the tibia, aligning the femoral cutting block relative to the tibial cutting block, aligning the femur relative to the tibia, cutting the femur using the at least one femoral cutting guide, cutting the tibia using the at least one tibial cutting guide, removing the femoral and tibial cutting blocks, and positioning permanent femoral and tibial components on the cut portions of the femur and tibia, respectively.

Abstract: An instrument for locating a femoral mechanical axis and identifying the locations of at least three points in space in relation to the center of a femoral head, the instrument including a base member, an extension arm clamp translationally and pivotally attached to the base member, an extension arm translationally and pivotally attached to the extension arm clamp, a swiveling arm pivotally attached to a distal end of the extension arm, the swiveling arm including a lateral locator member at a proximal end and a medial locator member at a distal end, a bracket pivotally attached to the swiveling arm, and a locating arm removably attached to the bracket, the locating arm including a middle locator member.

Abstract: The present invention provides surgical drilling devices and methods. An exemplary surgical drilling device in accordance with the present invention comprises a housing, a retractable guide tube assembly, and a flexible cable drill. The retractable guide tube assembly comprises an arcuate guide tube slidingly positioned in a first arcuate channel of the housing. The arcuate guide tube is operatively connected to an actuating rod slidingly positioned in a second channel of the housing wherein the actuating rod controllably advances and retracts the arcuate guide tube. The flexible cable drill comprises a first portion slidingly positioned in the arcuate guide tube and a second portion slidingly positioned in a third channel of the housing.

Abstract: A bone compacting device for compacting cancellous bone within a bone cavity, the bone compacting device including a body having a plurality of segments, wherein each segment is adjacent to at least one adjacent segment between a first end and a second end of the body, and wherein each of the plurality of segments is independently expandable to contact the cancellous bone.

Abstract: The present invention relates to an intramedullary nail distal targeting device (20) adapted to be installed to an external jig system (A) having a proximal attachment (B) to support an intramedullary nail (C) thereon and an extension arm (D) secured to the proximal attachment (B), the nail distal targeting device including a drill guide (21) being defined by an abbreviated cylindrical body (23) having at least a pair of guide slots (24, 24?) each of the guide slots (24, 24?) having a scalloped inner surface (25), an attaching mechanism (22) being provided at the upper portion of the drill guide (21), the attaching mechanism (22) secured in a rotating and sliding manner to a distal end of the extension arm (D) and at least a pair of guide sleeves (10, 10?) being telescopically fitted correspondingly into the slots (24, 24?) of the drill guide (21), each of the guide sleeves (10, 10?) having a scalloped outer surface to correspondingly fit into the guide slots (24, 24?), each of the guide sleeves (10, 10?) bei

Abstract: A spinal implant system is provided for correcting spinal abnormalities. The system involves connectors configured to fit over spinal implant rods, a transverse rod, and a locking member for fixing each connector to the spinal implant rod and transverse rod. The connector is configured such that when the locking member is in a first position, the transverse rod is temporarily fixed to the connector, and when the locking member is in a second position, both the transverse rod and spinal implant rod are fixed to the connector.

Abstract: A drill assembly comprises a motor guide tube, an adaptor extending from a distal end of the motor guide tube, an elongate drill guide tube extending from a distal end of the adaptor, a retractable guide tube including an arcuate distal end slideably disposed within a channel of the drill guide tube, an actuation lever operably coupled to the retractable guide tube and extending from an outer surface of the adaptor, a flexible drill cable slideably disposed within the retractable guide tube, a drill motor operably coupled to the flexible drill cable, and a push-pull cable extending between the drill motor at a distal end and a liner stage motor inside a control box at a proximal end. A distal end of the flexible drill cable is structured to be advanced through the arcuate distal end of the retractable guide tube, and the linear stage motor is operable to advance and retract the push-pull cable and the drill motor.

Abstract: A spinal implant assembly is provided for stabilizing the spine. The assembly includes an elongated plate, bolts, and nuts. The plate is fixed to vertebrae spanning an injury or deformity to a disc or vertebra using the bolts and nuts. Screws can provide additional stability. The nuts are configured to extend through the plate to clamp the plate between collars on both the bolts and nuts.

Abstract: A spinal implant system is provided for correcting spinal abnormalities. The system involves connectors configured to fit over spinal implant rods, a transverse rod, and a locking member for fixing each connector to the spinal implant rod and transverse rod. The connector is configured such that when the locking member is in a first position, the transverse rod is temporarily fixed to the connector, and when the locking member is in a second position, both the transverse rod and spinal implant rod are fixed to the connector.

Abstract: A spinal implant system is provided for correcting spinal abnormalities. The system involves connectors configured to fit over spinal implant rods, a transverse rod, and a locking member for fixing each connector to the spinal implant rod and transverse rod. The connector is configured such that when the locking member is in a first position, the transverse rod is temporarily fixed to the connector, and when the locking member is in a second position, both the transverse rod and spinal implant rod are fixed to the connector.

Abstract: The present invention relates to an intramedullary nail distal targeting device (20) adapted to be installed to an external jig system (A) having a proximal attachment (B) to support an intramedullary nail (C) thereon and an extension arm (D) secured to the proximal attachment (B), the nail distal targeting device including a drill guide (21) being defined by an abbreviated cylindrical body (23) having at least a pair of guide slots (24, 24?) each of the guide slots (24, 24?) having a scalloped inner surface (25), an attaching mechanism (22) being provided at the upper portion of the drill guide (21), the attaching mechanism (22) secured in a rotating and sliding manner to a distal end of the extension arm (D) and at least a pair of guide sleeves (10, 10?) being telescopically fitted correspondingly into the slots (24, 24?) of the drill guide (21), each of the guide sleeves (10, 10?) having a scalloped outer surface to correspondingly fit into the guide slots (24, 24?), each of the guide sleeves (10, 10?) bei

Abstract: The present invention is a rotating track cutting guide system that maintains precise alignment of a bone saw with bone tissue. The rotating track cutting guide generally includes a track subassembly and cutting guide subassemblies attachable to the bone that is to be cut. The track subassembly supports an oscillating surgical saw driver. The track subassembly is removably securable to cutting guide subassemblies which are attachable to the desired bone to facilitate a series of controlled cuts. The design of the track subassembly stabilizes the oscillating saw driver and enables it to both rotate in the plane of the saw blade and move linearly along the track.

Abstract: The present invention is a rotating track cutting guide system that maintains precise alignment of a bone saw with bone tissue. The rotating track cutting guide generally includes a track subassembly and cutting guide subassemblies attachable to the bone that is to be cut. The track subassembly supports an oscillating surgical saw driver. The track subassembly is removably securable to cutting guide subassemblies which are attachable to the desired bone to facilitate a series of controlled cuts. The design of the track subassembly stabilizes the oscillating saw driver and enables it to both rotate in the plane of the saw blade and move linearly along the track.