Abstract: An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of bone, a first central aperture extending from the upper surface to an interior of the implant, and a first grid structure surrounding the first central aperture; a bottom support assembly defining a lower surface configured to engage a second portion of bone, a second central aperture extending from the lower surface to the interior, and a second grid structure surrounding the second central aperture; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position.

Abstract: A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Abstract: A device for insertion into a spinal (intervertebral or intravertebral) space is expandable and contractable. The device includes a body assembly, a top member configured to fit within a gap in the body assembly, a drive gear disposed within the body assembly at a distal end of the body assembly, a proximal gear assembly, and a distal gear assembly. The drive gear includes a receiver accessible from outside the body assembly and configured to be rotated in order to rotate the drive gear. Each gear assembly is attached to the top member. The distal gear assembly engages the drive gear. Rotation of the drive gear in a first direction causes the gear assemblies to translate the top member away from the body assembly, and rotation of the drive gear in a second direction causes the gear assemblies to translate the top member towards the body assembly.

Abstract: A wedge-shaped bone implant, particularly but not necessarily, for fixing bones of the foot is provided. The implant has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a foot bone, eliminating the need to also use a plate. The implant can include an opening that extends through the implant body from one tapered side thereof to the other tapered side thereof. This opening allows the introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the body may also have teeth, serrations or the like. The implant body may include a hole or the like in the distal aspect thereof. This allows for the insertion of a metallic component (e.g. titanium or tantalum) to allow for the visibility of the extent of the implant body in radiography, x-ray, or the like.

Abstract: A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Abstract: A wedge-shaped bone implant, particularly but not necessarily, for fixing bones of the foot is provided. The implant has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a foot bone, eliminating the need to also use a plate. The implant can include an opening that extends through the implant body from one tapered side thereof to the other tapered side thereof. This opening allows the introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the body may also have teeth, serrations or the like. The implant body may include a hole or the like in the distal aspect thereof. This allows for the insertion of a metallic component (e.g. titanium or tantalum) to allow for the visibility of the extent of the implant body in radiography, x-ray, or the like.

Abstract: An expandable implant includes a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end; an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position; a control shaft rotatable received by the base member, wherein rotation of the control shaft cause relative movement of the adjustable member relative to the base member; and at least one control member received on the control shaft and by the control channel, wherein rotation of the control shaft causes the control member to translate along the control shaft and along the control channel.

Abstract: An apparatus for surgical fusion of a cranio-cervical junction includes a plate member, where the plate member includes a bottom portion configured to be secured to a cranium; a top portion including a plurality of perforations extending therethrough configured to promote bone growth, wherein the top portion and the bottom portion define a graft accommodation space; and first and second side portions coupled to the top and bottom portions on first and second sides of the graft accommodation space. The first side portion is configured to receive a first support rod and the second side portion is configured to receive a second support rod.

Abstract: A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translates for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration.

Abstract: A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translate for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration.

Abstract: A device for insertion into a spinal (intervertebral or intravertebral) space is expandable and contractable. The device includes a body assembly, a top member configured to fit within a gap in the body assembly, a drive gear disposed within the body assembly at a distal end of the body assembly, a proximal gear assembly, and a distal gear assembly. The drive gear includes a receiver accessible from outside the body assembly and configured to be rotated in order to rotate the drive gear. Each gear assembly is attached to the top member. The distal gear assembly engages the drive gear. Rotation of the drive gear in a first direction causes the gear assemblies to translate the top member away from the body assembly, and rotation of the drive gear in a second direction causes the gear assemblies to translate the top member towards the body assembly.

Abstract: A retractor assembly includes a base, a first side assembly coupled to a first side of the base and configured to translate relative to the base along a first direction, a first tap assembly coupled to the first side assembly and configured to threadingly engage bone, a second side assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side assembly, a second tap assembly coupled to the second side assembly and configured to threadingly engage bone, and a center assembly coupled to a center portion of the base. At least a portion of the center assembly is configured to translate relative to the base along a second direction different from the first direction.

Abstract: An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of vertebral bone; a bottom support assembly defining a lower surface configured to engage a second portion of vertebral bone; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position. In the collapsed position, the upper surface is generally parallel to the lower surface, and in the expanded position, a portion of the upper surface extends at an acute angle relative to a portion of the lower surface.

Abstract: An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

Abstract: A spinal interbody device includes a base link having a first end and a second end, a linkage including a first link having a first end coupled to the first end of the base link and a second end, and a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link. The base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces. The device further includes at least one radiographic element provided in at least one of the first link and the second link and positioned such that the radiographic element provides an indication of a degree of expansion of the device when the device is imaged from one of the first side and the second side of the device.

Abstract: A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translate for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration.

Abstract: A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Abstract: A surgical instrument provides rotational and axial variations of a working end relative to a handle of the surgical instrument for configuration flexibility of the working end. An internal configuration of the handle of the surgical instrument accepts a retention portion of the working end in several positions. The working end can be varied in axial length relative to a front end of the handle and in axial position relative to the extension of the working end from the front end of the handle. A retention mechanism interacts with the handle and the working end to fix a position of the working end in the handle. The working end may be shaped to provide a bayonet version wherein the working end extends from the front end of the handle offset from the handle's longitudinal center, and a non-bayonet version wherein the working end extends from the handle's longitudinal center.

Abstract: A radially expandable spinal interbody device for implantation between adjacent vertebrae of a spine is deliverable to an implant area in a radially collapsed state having minimum radial dimensions and once positioned is then radially expandable through and up to maximum radial dimensions. The expanded radially expandable spinal interbody device is configured to closely mimic the anatomical configuration of a vertebral face. The radially expandable spinal interbody device is formed of arced, pivoting linkages that allow transfiguration from the radially collapsed minimum radial dimensions through and up to the radially expanded maximum radial dimensions once deployed at the implant site (i.e. between adjacent vertebrae). The pivoting linkages have ends with locking features that inhibit or prevent overextension of the linkages.

Abstract: A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.