Abstract: A fusion cage may include an upper endplate directly hinged to a lower endplate. The fusion cage may be adjustable to provide various angles between the endplates. An insert may be coupled between the endplates to lock the endplates at a selected angle. Fasteners may extend through the fusion cage into adjacent bone portions. An instrument may couple to an endplate so that the hinged-together endplates may be inserted between bone portions. The instrument may be used to adjust the angle between the endplates and to couple the insert between the endplates.

Abstract: A facet joint replacement system includes a facet joint replacement device including an enclosing body and an articulating body. The enclosing body includes an interior surface defining an inner cavity of the enclosing body. The interior surface includes a first articulating surface and a projection extending inwardly relative to a surrounding area of the interior surface. The articulating body is positioned within the inner cavity of the enclosing body and is configured to move within the enclosing body. The articulating body includes a second articulating surface and a recess extending inwardly relative to a surrounding area of the articulating body and aligned with the projection of the interior surface of the enclosing body so as to allow movement of the projection along the recess of the enclosing body while constraining rotational motion of the articulating body within the enclosing body.

Abstract: Various embodiments described herein provide devices and associated methods for treating spinal disease by implanting one or more interspinous process spacing devices. In one embodiment, an interspinous process spacing device includes a first attachment side, a second attachment side, a spacer tray, and a securing means. The spacer tray extends from the first attachment side and is slideably insertable through a spacer tray slot formed in the second attachment side. The spacer tray is adapted to be positioned between a spinous process of a first vertebra and a spinous process of an adjacent second vertebra, and the spacer tray includes a trough formed in a top surface of the spacer tray. The securing means is configured to engage the trough of the spacer tray to secure the second attachment side relative to the first attachment side.

Abstract: A system for facet joint fusion includes a cannula having a body and a navigation arm mounted to the body. The navigation arm includes a base and a plurality of individual arms mounted to the base. The navigation arm also includes one or more markers mounted to the plurality of individual arms. The system also includes an imaging system configured to identify a position of the one or more markers relative to a facet joint of a patient. The system further includes a rotary tool that is configured to mount within the cannula. The rotary tool is configured to create a void in the facet joint by way of the cannula, and the void is configured to receive a bone graft or bone growth promoting material.

Abstract: An expandable intervertebral spacer system having a cage formed by a top plate and a bottom plate which are held apart a changeable distance. An expansion mechanism within the cavity is configured to force the top plate apart from the bottom plate a desired distance. One expansion mechanism is an expansion spring that is held in a compressed state with a removable trigger wire that temporarily secures the top and bottom plates together. Once the spacer is implanted in a patient, the trigger wire is removed permitting the expansion spring to relax, in a single motion, to the farthest extent possible in an intervertebral space. The top plate and the bottom plate are locked apart using a locking mechanism made of two saw-toothed posts that cooperate to lock the top plate a desired distance from the bottom plate. The saw-tooth posts are biased against each other with a spring.

Abstract: Devices for occluding an aneurysm are provided. In particular, the device include an upper member that sits against the dome of the aneurysm, a lower member that sits in the neck of the aneurysm, and a means of adjusting the overall dimensions of the device. Also provided are methods of making and using these devices.

Abstract: The present disclosure relates to kits for bone graft delivery, and specifically, for near-simultaneous and integrated delivery of bone graft material during the placement of surgical cages or other medical implants in a patient's spine. The kits include integrated fusion cage and graft delivery devices that deliver and disperse biologic material through a fusion cage to a disc space and, that may, without withdrawal from the surgical site, allow for selectively detaching the fusion cage for deposit to the same disc space. The integrated fusion cage and graft delivery device is formed such that a hollow tube and plunger selectively and controllably place bone graft material and a fusion cage in or adjacent to the bone graft receiving area. The kits also include a cover plate that secures to the fusion cage.

Abstract: Devices for occluding an aneurysm are provided. In particular, the device include an upper member that sits against the dome of the aneurysm, a lower member that sits in the neck of the aneurysm, and a means of adjusting the overall dimensions of the device. Also provided are methods of making and using these devices.

Abstract: A spinal implant has proximal and distal regions, and includes upper and lower bodies. A proximal adjustment assembly is disposed between the upper and lower bodies in the proximal region of the spinal implant and is adjustably coupled to the upper and lower bodies, and a distal adjustment assembly is disposed between the upper and lower bodies in the distal region of the spinal implant and is adjustably coupled to the upper and lower bodies. The proximal and distal adjustment assemblies are independently movable with respect to each other, both concurrently and alternately, to change a vertical height of at least one of the proximal or distal regions of the spinal implant. A set screw is removably disposed within the proximal region of the spinal implant to lock the vertical height of the proximal and distal regions of the spinal implant.

Abstract: An expandable intervertebral implant is provided for insertion into an intervertebral space defined by adjacent vertebrae. The expandable intervertebral implant includes a pair of outer sleeve portions and an inner core disposed between the outer sleeve portions. Movement of the inner core relative to the outer sleeve portions causes the outers sleeve portions to deflect away from each other, thereby engaging the expandable intervertebral implant with the vertebrae and adjusting the height of the intervertebral space.

Abstract: Systems and methods are described for correcting sagittal imbalance in a spine including instruments for performing the controlled release of the anterior longitudinal ligament through a lateral access corridor and hyper-lordotic lateral implants with detachable fixation tabs.

Abstract: Devices for occluding an aneurysm are provided. In particular, the device include an upper member that sits against the dome of the aneurysm, a lower member that sits in the neck of the aneurysm, and a means of adjusting the overall dimensions of the device. Also provided are methods of making and using these devices.

Abstract: Expandable intervertebral spacer system having a top plate and a bottom plate which are separated and held apart a changeable distance forming a cage. The plates are held apart by four locking mechanisms in the cage at or near the corners or the periphery of the plates, leaving the cavity of the cage substantially unobstructed. Each locking mechanism is made of two saw-toothed posts that cooperate to lock the top plate a desired distance from the bottom plate. The saw-tooth posts are biased against each other with a spring. Once the spacer is implanted in a patient with a removable insertion tool, the top and bottom plates are forced apart incrementally, one saw tooth at a time, in a ratchet-like motion, using a removable expansion mechanism. Optionally, each stanchion is surrounded by a sheath to prevent bone particles and other debris from interfering with the mating of the saw teeth.

Abstract: A unique, universal Zero-Profile Expandable Intervertebral Spacer (ZP-EIS) device for fusion and distraction throughout the entire spine is provided which can be inserted via anterior, anterolateral, lateral, far lateral or posterior surgical approaches dependent on the need and preference. Multiple ZP-EIS embodiments each with unique mechanisms of calibrated expansion are provided. Two of these embodiments incorporate bi-directional fixating transvertebral (BDFT) screws and five other embodiments do not incorporate BDFT screws. A tool for implantation into the intervertebral device and calibrated device expansion is also disclosed.

Abstract: Embodiments herein are generally directed to expandable spinal implants, systems, apparatuses, and components thereof that can be used in spinal fusion and/or stabilization procedures, as well as methods of installation. The expandable spinal implants may be configured for lateral insertion.

Abstract: An interbody fusion device including a body member, at least one side member engaging the body member, and at least one movement mechanism that engages at least one side member and the body member. A surgical method for maintaining a space between two vertebral bodies in a spine, including the steps of obtaining a medical device, such as an interbody fusion device, and inserting and coupling an expansion tool into an opening within the medical device. The surgical method also including slidingly inserting the medical device into a space between two vertebral bodies and rotating the expansion tool to move the at least one side member in a direction relative to the body member. The method may further include detaching the expansion tool from the medical device and removing the tool from the space between the two vertebral bodies in the spine.

Abstract: The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

Abstract: A spinal implant includes an outer body extending along an axis between opposite first and second ends. The outer body defines a bore and a first thread. An inner shaft includes opposite first and second ends. The second end of the inner shaft is positioned in the bore. The inner shaft includes a second thread that mates with the first thread. The second thread includes a series of gear teeth. An end plate is coupled to the first end of the inner shaft. A driver includes a gear configured to engage the gear teeth such that rotation of the driver relative to the outer body rotates the inner shaft relative to the outer body to translate the inner shaft relative to the outer body along the longitudinal axis. Systems and methods are disclosed.

Abstract: An expandable intervertebral implant comprises an expandable cage comprising a central frame, a superior endplate, an inferior endplate, an anterior adjustment mechanism and a posterior adjustment mechanism. The central frame including an anterior (distal) threaded bore and a posterior (proximal) bore. The superior (upper) end plate movably coupled along a posterior portion of the central frame. The inferior (lower) end plate movably coupled along the posterior portion of the central frame opposite the superior end plate. The anterior adjustment mechanism including an anterior wedge coupled to an anterior screw movable within the anterior threaded bore. The posterior adjustment mechanism including a posterior wedge coupled to a posterior screw movable within the posterior bore.

Abstract: Embodiments are directed to spinal treatments and, more particularly, to a trial inserter tool compatible with detachable trial heads for use in spinal surgery. In a preferred embodiment, the present invention provides a system for sizing an implant to be used in posterior lumbar interbody fusion surgery. The system may comprise a trial inserter tool, wherein the trial inserter tool comprises: a body, wherein the body is an elongated tubular, wherein the body comprises a first end and a second end; an actuation device, wherein the actuation device is disposed on the body between the first end and the second end; and a hooked support member that extends from the second end of the body; and a trial head disposable on the hooked support member.

Abstract: An expandable spinal implant is provided having first and second endplates hinged along one end and an expansion mechanism disposed therebetween configured to expand the first and second endplates from each other to provide a lordotic angle of up to 60 degrees. Various implants, systems and methods are disclosed.

Abstract: An apparatus and a method are provided for performing cartilage allograft implant surgeries. The apparatus comprises an allograft plug kit comprising one or more grafts configured to treat osteochondral defects in various bone joint locations in a patient's body. Each of the grafts comprises a cartilage layer coupled with a bone portion. The cartilage layer comprises a thickness selected to closely match the thickness of existing cartilage at an implant location. The bone portion comprises surface features configured to encourage the patient's bone tissue to grow into the bone portion, thereby accelerating incorporation of the graft into the patient's bone. An instrument kit comprises a multiplicity of instruments configured for implantation of the grafts into the patient's body, including at least a graft inserter, a guidewire, a reamer, and a size gauge.

Abstract: The present embodiments include a cable cerclage system and method for the correction of fractures. The system and method can include a cable saddle including first and second loops extending from an upper surface thereof, the first and second loops including apertures extending therethrough and sized and shaped to receive a cerclage cable therethrough. The present embodiments are also directed to a cable cerclage system including at least one cable link, the cable link having a through-hole extending therethrough from a first end to a second end and including a first coupling member at a first and a second coupling member at a second end. The first coupling member of a first cable link is configured to couple to the second coupling member of an adjacent second cable link so that the through-holes of the first and second cable links align to form an elongated cerclage cable passageway.

Abstract: The present disclosure relates to a system, apparatus and method for near-simultaneous and integrated delivery of bone graft material during the placement of surgical cages or other medical implants in a patient's spine. The integrated fusion cage and graft delivery device according to various embodiments delivers and disperses biologic material through a fusion cage to a disc space and, without withdrawal from the surgical site, may selectively detach the fusion cage for deposit to the same disc space. The integrated fusion cage and graft delivery device is formed such that a hollow tube and plunger selectively and controllably place bone graft material and a fusion cage in or adjacent to the bone graft receiving area. The system also includes a cover plate that secures to the fusion cage.

Abstract: Expandable fusion devices, systems, instruments, and methods thereof. The expandable fusion device is capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The fusion device may include a body, a first endplate, and a second endplate. A drive screw may be rotated to move the first and second endplates outwardly and into an expanded configuration. Instruments may be provided to ensure the implant is inserted safely and as intended.

Abstract: Disclosed is an expandable interbody fusion implant that is configured to have an initial configuration having a first footprint width suitable for being inserted into an intervertebral space and an expanded configuration having a second footprint width that is greater than the first footprint width. The implant may include a first body member and a second body member that is pivotally coupled to the first body member. The implant may be expanded using an inflatable balloon. The implant may be expanded bilaterally such that both body members rotate relative to the other or the implant may be expanded unilaterally such that one of the body members rotates relative to the other.

Abstract: An expandable interbody spacer for the spine is provided. The spacer includes upper and lower endplates simultaneously movable with respect to a housing along an axis transverse to a longitudinal axis to increase or decrease the height of the spacer selectably along both an anterior side and a posterior side for uniform expansion/contraction of the endplates or only along the anterior side for angular expansion/contraction of the endplates. A spacer deployment instrument is provided that is selectable to effect uniform or angular expansion/contraction. When uniform expansion/contraction is selected a gear on an anterior rod is engaged with a gear on a posterior rod to simultaneously rotate both rods in opposite directions. Opposite threads on actuators of the spacer effect translation of the actuators in the same direction along the longitudinal axis.

Abstract: Various surgical instruments, implants, and their methods of use are disclosed. The surgical instruments are usable to insert various implants into a patient through an access portal in a minimally-invasive manner. The implants are rotatable between different orientations using the instruments to change the footprint of the implant and allow the implant to be inserted through the minimally-invasive access portal.

Abstract: The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

Abstract: A prosthetic implant for engagement between first and second vertebrae. The implant includes a first plate configured for attachment to the first vertebrae and defining a first interbody connection member and a second plate configured for attachment to the second vertebrae and defining a second interbody connection member. An interbody component includes a body with a first end defining a first plate connection member configured for connection to the first interbody connection member and a second end defining a second plate connection member configured for connection to the second interbody connection member. A method of inserting the implant is also provided.

Abstract: Expandable spinal fusion devices, systems, and methods of using them are provided, and they can be inserted in a subject in a collapsed state through a small surgical corridor, and the expand cephalocaudal only, transverse only, or in both directions, in which direction of expansion can also be obtained independently, if desired, after the insertion. These inventions are valuable in reducing risk and surgical complexity, allowing for an on-the-fly selection of a desirable width footprint, a desired control of height expansion through a gradual cephalocaudal expansion, and a desired control of the alignment of the adjacent vertebral bodies. Devices, systems, and methods are also offered to provide a desired control of the contact area desired between the device and the upper and lower vertebral endplates achieved, for example, using an interdigitated endplate system.

Abstract: A system for dilating tissue includes a retractor having a pair of retractor blades that are movable towards and away from each other to retract tissue of a patient. The retractor blades have longitudinal guide channels. A first pin is attachable to a first vertebra. The system also includes an interbody spacer insertion device that has a guide channel for slidably engaging the longitudinal channel guide and is releasably attachable to an interbody spacer. The interbody spacer insertion device is configured to guide the interbody spacer into a space between adjacent vertebrae. A method for using the system includes advancing the retractor blades towards first and second vertebrae. The first retractor blade is attached to the first vertebra using the first pin and the retractor blades are moved away from each other. The interbody spacer insertion device is translated towards the vertebrae to position the interbody spacer between the vertebrae.

Abstract: An intervertebral implant for being implanted between adjacent vertebrae is provided. The implant includes a generally elongate implant body having a length extending between opposite longitudinal ends thereof, a superior face and an inferior face. The superior face and inferior face include cortical teeth adjacent to the implant body longitudinal ends. Additionally, the superior and inferior faces include longitudinally central teeth intermediate the cortical teeth and have bone engaging ends. The central teeth have a sharper configuration than that of the cortical teeth bone engaging ends for biting into the softer central bone material of the vertebrae. The cortical teeth are arranged in a first density per unit area and the central teeth are arranged in a second density per unit area that is less than the first density.

Abstract: A helicoil interference fixation system comprising: a helicoil comprising a helical body comprising a plurality of turns separated by spaces therebetween, the helical body terminating in a proximal end and a distal end, and at least one internal strut extending between at least two turns of the helical body; and an inserter for turning the helicoil, the inserter comprising at least one groove for receiving the at least one strut; the helicoil being mounted on the inserter such that the at least one strut of the helicoil is mounted in the at least one groove of the inserter, such that rotation of the inserter causes rotation of the helicoil.

Abstract: A joint spacer for therapeutically maintains separation of bones of a joint. A frame defines a longitudinal axis extending between distal and proximal ends. A carriage is slideably retained within the frame and has at least one ramped surface and a threaded portion. An actuator screw is threadably engaged with the threaded portion, and bears against said frame to cause the carriage to slideably move within the frame when the actuator screw is rotated. A first endplate engages a bone of the joint, and has at least one ramped surface that is mateable with the ramped surface of the carriage.

Abstract: An interbody fusion cage having upper and lower canals for receiving the heads of bone screws that have been pre-installed in opposing vertebral body endplates. The proximal wall of the cage preferably has a vertical slot that communicates with each canal and is adapted to allow access by a screwdriver and tightening of the screws.

Abstract: Disclosed herein are insertion and extraction instruments for orthopaedic procedures that are used for inserting and extracting trials and implants. The instruments include a body extending along a central axis having first and second arms extending from the body along first and second axes. The first and second arms may be moveable with the distal ends of the arms being configured to engage first and second engagement feature of a trial or an implant. The first and second axes define an angle therebetween such that when the distal end of the first arm is received in a first engagement feature of the implant and the distal end of the second arm is in the second engagement feature, the distal ends of the arms are urged against respective first and second side walls of the first and second arms to secure the instrument to the trial or implant.

Abstract: An expandable vertebral body device, system, instrument, and methods of assembly and using the device, system, and instrument are disclosed. The vertebral body device includes a body with a first end and a second end, a first rotating member rotatably coupled to the first end, a second rotating member rotatably coupled to the second end, a first extension member moveably coupled to the first end, and a second extension member moveably coupled to the second end. The expandable cage system comprises a vertebral body device and an insertion instrument. Methods for assembling and using the vertebral body device and instrument are also disclosed.

Abstract: Intervertebral devices and systems, and methods of their use, are disclosed having configurations suitable for placement between two adjacent vertebrae, replacing the functionality of the disc therebetween. Intervertebral devices and systems contemplated herein are implantable devices intended for replacement of a vertebral disc, which may have deteriorated due to disease for example. The intervertebral devices and systems are configured to allow for ample placement of therapeutic agents therein, including bone growth enhancement material, which may lead to better fusion between adjacent vertebral bones. The intervertebral devices and systems are configured for use in minimally invasive procedures, if desired.

Abstract: A bone cage may include first and second spaced apart frames defining a bone ingrowth cavity therebetween, a plurality of first protrusions each having a proximal end coupled to the first frame and a distal end extending into the cavity toward the second frame but not contacting the second frame, and a plurality of second protrusions each having a proximal end coupled to the second frame and a distal end extending into the cavity toward the first frame but not contacting the first frame. Furthermore, the distal ends of the first protrusions may be laterally offset from the distal ends of the second protrusions.

Abstract: An expandable, adjustable inter-body fusion device is presented. The inter-body fusion device can have a first plate, a second plate, and an insert positioned substantially there between the first plate and the second plate. The first plate, the second plate, and the insert define an interior cavity. Moving the insert longitudinally with respect to the first and second plates increases or decreases the distance of the first plate with respect to the second plate, effectively expanding the inter-body fusion device and increasing the volume of the interior cavity. The angle between the first plate and the second plate is selectively adjustable.

Abstract: An expandable intervertebral total disc replacement implant, including an inferior component, including a first core including a first outer surface and a first inner surface, and a first plurality of arms telescopingly engaged with the first core, a superior component, including a second core including a second outer surface and a second inner surface, and a second plurality of arms telescopingly engaged with the second core, and an expansion mechanism connected to the first inner surface and the second inner surface, the expansion mechanism operatively arranged to displace the superior component with respect to the inferior component.

Abstract: An implantable modular plate system for stabilizing adjacent vertebral bodies in a cervical spine includes at least two plate segments aligned or connected together so as to form a connection at and along adjacent ends. At least one of the plate segments includes a flange at an engagement end and at least one of the plate segments including a flange recess at an engagement end, the flange being configured for overlay engagement with the flange recess when the at least two plate segments are engaged. The plate segments are pivotable out of plane with one another at a common axis of rotation traversing overlapping portions of the adjacent ends and are constrained from rotation by the flanges such that the rotation of each plate segment is limited to up to 90 degrees of rotation away from the contact surfaces of the flange and flange recess.

Abstract: Embodiments herein are generally directed to expandable spinal implants, systems, apparatuses, and components thereof that can be used in spinal fusion and/or stabilization procedures, as well as methods of installation. The expandable spinal implants may be configured for lateral insertion.

Abstract: A selectively expanding spine cage has a minimized cross section in its unexpanded state that is smaller than the diameter of the neuroforamen through which it passes in the distracted spine. The cage conformably engages between the endplates of the adjacent vertebrae to effectively distract the anterior disc space, stabilize the motion segments and eliminate pathologic spine motion. Expanding selectively (anteriorly, along the vertical axis of the spine) rather than uniformly, the cage height increases and holds the vertebrae with fixation forces greater than adjacent bone and soft tissue failure forces in natural lordosis. Stability is thus achieved immediately, enabling patient function by eliminating painful motion. The cage shape intends to rest proximate to the anterior column cortices securing the desired spread and fixation, allowing for bone graft in, around, and through the implant for arthrodesis whereas for arthroplasty it fixes to endpoints but cushions the spine naturally.

Abstract: The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

Abstract: An expandable implant includes a lower support; an upper support pivotally coupled to the lower support and including a control channel; and a control assembly. The control assembly includes a control shaft coupled to the lower support and a control member coupled to the control shaft and configured to move along the control shaft. The control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel. Movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support.

Abstract: A spinal pedicle screw system includes distractions rods and has the ability to be distracted after the screws are inserted into the pedicle and maintain polyaxial motion via polyaxial joints.

Abstract: The invention relates to an intervertebral disk prosthesis (10), comprising a caudal plate (20), a cranial plate (30), and an elastic core (40) formed between the caudal plate (20) and the cranial plate (30), wherein the caudal plate (20) has a cavity (25) on the side (21) facing the cranial plate (30), wherein the core (40) is integrally connected to the cavity (25) in the caudal plate (20).

Abstract: An expanding, conforming interbody implant includes a plurality of superior and a plurality of inferior segments. The segments are adapted to individually expand, contact, and conform to endplates of vertebral bodies to distribute forces equally over the implant and across the vertebral endplates. Once a proper extension of the segments has been achieved, the segments are locked in position. The implant has a stiffness that approximates the stiffness of bone, and the implant minimizes problems with subsidence, endplate fractures, and stress shielding.