Abstract: A rod reduction device includes a body having a housing defining a cavity; a first member and a second member; a first finger assembly and a second finger assembly being secured to respective distal ends of the first member and the second member and configured to releasably engage a vertebral anchor therebetween; and a screw assembly defining a longitudinal axis, at least a portion of the screw assembly being positioned within the cavity of the housing. The screw assembly includes an inner shaft having exterior threading; and an outer shaft circumscribing the inner shaft and having interior threading threadably engaged with the exterior threading of the inner shaft. At least a portion of the outer shaft is rotatably coupled to the housing. The inner shaft is movable along the longitudinal axis upon rotation of the outer shaft and configured to reduce a spinal rod into the vertebral anchor.

Abstract: An external actuation device includes a housing, a motor, a driving magnet, a sensor, and a controller. The motor includes a driveshaft that is rotatable about a rotation axis. The driving magnet is rotatably coupled with the driveshaft and is rotatable together with the driveshaft about the rotation axis. The sensor is associated with the driving magnet and is configured to detect a magnetic force between the driving magnet and a driven magnet disposed adjacent to the driving magnet. The controller is in communication with the motor and the sensor.

Abstract: A polyaxial rod connector comprising a body having an external surface. The connector body is intersected by an imaginary first reference plane and an imaginary second reference plane perpendicular to the first plane. The first body portion is on one side of the first plane and defines a first spinal rod passage defining a first passage axis and a first set screw opening defining a first axis perpendicular to the first passage axis. A second body portion is adjoined to the first body portion, defining a second spinal rod passage defining a plurality of passage axes, and a second set screw opening defining a second axis perpendicular to the plurality of second passage axes. The first passage axis is non-parallel with one of second passage axes in the second plane. Either the first or second spinal rod passage have an hourglass shaped cross-section parallel to the second plane.

Abstract: A pedicle screw tulip head extender. The extender can include an upper body portion joined to a lower body portion. The upper body portion can have two opposing arms extending upwardly from a curved lower surface to define a substantially U-shaped interior channel having a first channel axis, the curved lower surface defining an access opening extending through the upper body portion in a direction generally perpendicular to the first channel axis. The lower body portion can extend downwardly as a protrusion from the upper body portion and can be joined to the upper body portion and can have first and second sides, the first and second sides being substantially planar and parallel and separated by an interior portion, the first and second sides defining a protrusion height and a protrusion width. A screw can be disposed in the interior portion and have external threads defining a thread diameter greater than the protrusion width.

Abstract: A pedicle screw tulip head extender. The extender can include an upper body portion joined to a lower body portion. The upper body portion can have two opposing arms extending upwardly from a curved lower surface to define a substantially U-shaped interior channel having a first channel axis, the curved lower surface defining an access opening extending through the upper body portion in a direction generally perpendicular to the first channel axis. The lower body portion can extend downwardly as a protrusion from the upper body portion and can be joined to the upper body portion and can have first and second sides, the first and second sides being substantially planar and parallel and separated by an interior portion, the first and second sides defining a protrusion height and a protrusion width. A screw can be disposed in the interior portion and have external threads defining a thread diameter greater than the protrusion width.

Abstract: A pedicle screw tulip head converter. The converter can have a first portion joined to a second portion. The first portion can have a surface parallel to a first portion plane, and an opening defining a first portion axis. The second portion can extend from the first portion and can have a surface parallel to a second portion plane, the second portion plane being perpendicular to the first portion plane. The second portion can have a curved surface that defines a second portion axis, the second portion axis being perpendicular to and coplanar with the first axis.

Abstract: A pedicle screw tulip head extender. The extender can include an upper body portion joined to a lower body portion. The upper body portion can have two opposing arms extending upwardly from a curved lower surface to define a substantially U-shaped interior channel having a first channel axis, the curved lower surface defining an access opening extending through the upper body portion in a direction generally perpendicular to the first channel axis. The lower body portion can extend downwardly as a protrusion from the upper body portion and can be joined to the upper body portion and can have first and second sides, the first and second sides being substantially planar and parallel and separated by an interior portion, the first and second sides defining a protrusion height and a protrusion width. A screw can be disposed in the interior portion and have external threads defining a thread diameter greater than the protrusion width.

Abstract: An external actuation device includes a housing, a motor, a driving magnet, a sensor, and a controller. The motor includes a driveshaft that is rotatable about a rotation axis. The driving magnet is rotatably coupled with the driveshaft and is rotatable together with the driveshaft about the rotation axis. The sensor is associated with the driving magnet and is configured to detect a magnetic force between the driving magnet and a driven magnet disposed adjacent to the driving magnet. The controller is in communication with the motor and the sensor.

Abstract: A kit for use in performing joint arthroplasty is provided. The kit (400) includes a trial (12) and a reamer (2). The reamer (2) is for preparing a cavity (4) in the intramedullary canal (8) of a long bone (8) with the use of a driver (10) and to assist in performing a trial reduction. The reamer (2) includes a first portion (14) for placement at least partially in the cavity (4) of the long bone (8) and a second portion (16) operably connected to the first portion (14). The reamer (2) is removably connected to the driver (10) to rotate the reamer (2). The trial (12) is removably attachable to the reamer (2).

Abstract: A kit (400) for use in performing joint arthroplasty is provided. The kit (400) includes a trial (12) and a reamer (2). The reamer (2) is for preparing a cavity (4) in the intramedullary canal (8) of a long bone (8) with the use of a driver (10) and to assist in performing a trial reduction. The reamer (2) includes a first portion (14) for placement at least partially in the cavity (4) of the long bone (8) and a second portion (16) operably connected to the first portion (14). The reamer (2) is removably connected to the driver (10) to rotate the reamer (2). The trial (12) is removably attachable to the reamer (2).

Abstract: A trial (100) for use in performing joint arthroplasty is provided. The trial (100) fits to a cavity (103) in the canal (105) of a long bone (107) and assists in the performing of a trial reduction in performing joint arthroplasty. The trial (100) includes a stem portion (102) and a neck portion (104) fixedly connected to the stem portion (102) in a plurality of selectable positions with respect to the stem portion (102).

Abstract: An assembly tool (1) for assembly of a first component (2) of a prosthesis (4) to a second component (6) of the prosthesis (4) for use in joint arthroplasty is provided. The tool (1) includes a first member (8) operably associated with the first component (2). The first member (8) defines a first member longitudinal axis (10) of the first member (8). The tool also includes a second member (12) operably associated with the second component (6). The second member (12) defines a second member longitudinal axis (14) of the second member (12). The second member (12) is adapted to provide relative motion of the second member (12) with respect to the first member (8) when the second member (12) is rotated relative to the first member (8) about the second member longitudinal axis (14).

Abstract: A reamer (2) for preparing a cavity (4) in the intramedullary canal (6) of a long bone (8) is provided. The reamer (2) includes a first component (10) for preparation of the cavity (4) in the canal (6). The first component (10) includes a portion of the first component (10) for placement at least partially in the cavity (4) of the long bone (8). The first component (10) defines a rotational centerline (16) of the first component (10). The reamer (2) also includes a second component (12) operably connected to the first component (10). The second component (12) defines a rotational centerline (18) of the second component (12). The rotational centerline (16) of the first component (10) and the rotational centerline (10) of the second component (12) have a first relationship in which the centerlines are coincident and a second relationship in which the centerlines are skewed with respect to each other.

Abstract: An assembly tool (1) for assembly of a first component (2) of a prosthesis (4) to a second component (6) of the prosthesis (4) for use in joint arthroplasty is provided. The tool (1) includes a first member (8) operably associated with the first component (2). The first member (8) defines a first member longitudinal axis (10) of the first member (8). The tool also includes a second member (12) operably associated with the second component (6). The second member (12) defines a second member longitudinal axis (14) of the second member (12). The second member (12) is adapted to provide relative motion of the second member (12) with respect to the first member (8) when the second member (12) is rotated relative to the first member (8) about the second member longitudinal axis (14).

Abstract: A kit (400) for use in performing joint arthroplasty is provided. The kit (400) includes a trial (12) and a reamer (2). The reamer (2) is for preparing a cavity (4) in the intramedullary canal (8) of a long bone (8) with the use of a driver (10) and to assist in performing a trial reduction. The reamer (2) includes a first portion (14) for placement at least partially in the cavity (4) of the long bone (8) and a second portion (16) operably connected to the first portion (14). The reamer (2) is removably connected to the driver (10) to rotate the reamer (2). The trial (12) is removably attachable to the reamer (2).

Abstract: An assembly tool (1) for assembly of a first component (2) of a prosthesis (4) to a second component (6) of the prosthesis (4) for use in joint arthroplasty is provided. The tool (1) includes a first member (8) operably associated with the first component (2). The first member (8) defines a first member longitudinal axis (10) of the first member (8). The tool also includes a second member (12) operably associated with the second component (6). The second member (12) defines a second member longitudinal axis (14) of the second member (12). The second member (12) is adapted to provide relative motion of the second member (12) with respect to the first member (8) when the second member (12) is rotated relative to the first member (8) about the second member longitudinal axis (14).

Abstract: A kit (400) for use in performing joint arthroplasty is provided. The kit (400) includes a trial (12) and a reamer (2). The reamer (2) is for preparing a cavity (4) in the intramedullary canal (8) of a long bone (8) with the use of a driver (10) and to assist in performing a trial reduction. The reamer (2) includes a first portion (14) for placement at least partially in the cavity (4) of the long bone (8) and a second portion (16) operably connected to the first portion (14). The reamer (2) is removably connected to the driver (10) to rotate the reamer (2). The trial (12) is removably attachable to the reamer (2).

Abstract: A reamer (2) for preparing a cavity (4) in the intramedullary canal (6) of a long bone (8) is provided. The reamer (2) includes a first component (10) for preparation of the cavity (4) in the canal (6). The first component (10) includes a portion of the first component (10) for placement at least partially in the cavity (4) of the long bone (8). The first component (10) defines a rotational centerline (16) of the first component (10). The reamer (2) also includes a second component (12) operably connected to the first component (10). The second component (12) defines a rotational centerline (18) of the second component (12). The rotational centerline (16) of the first component (10) and the rotational centerline (10) of the second component (12) have a first relationship in which the centerlines are coincident and a second relationship in which the centerlines are skewed with respect to each other.