Abstract: A system, and method of using the system, for changing the angle of a bone of a subject is provided by the present disclosure.

Abstract: A surgical instrument comprises a first member including a lateral projection having a locking surface that defines an elongated cavity. The locking surface is engageable with a longitudinal member to fix the longitudinal member with the first member. A second member includes at least one mating element being engageable with a spinal construct. The first member is axially translatable relative to the second member in a first direction to tension the longitudinal member and in a second direction to release tension from the longitudinal member. Systems and methods are disclosed.

Abstract: A surgical instrument for reducing a rod into a saddle of a fixation member includes a distal end for engaging the saddle and a proximal end. A reducing device is disposed between the distal end and the proximal end. The reducing device is operative to reduce the rod into the saddle. The reducing device defines a throughbore. The throughbore provides access there through by a first drive member to secure a plug to the saddle.

Abstract: The present invention is an implant for bone. The current implant is particularly useful in spinal surgical procedures.

Abstract: An expandable interbody spacer includes a first endplate surface located on a first side of the spacer and adapted to contact a vertebral endplate surface of a first vertebral body, a second endplate surface located on a second, opposed, side of the spacer and adapted to contact a vertebral endplate surface of a second, opposed, vertebral body and an expansion mechanism adapted to selectively apply a distracting force between the first endplate surface and the second endplate surface, whereby actuation of the expansion mechanism causes the spacer to transition between a compressed insertion configuration to an expanded fusion configuration. The spacer also includes one or more of a deformable surface, a porosity to promote bone on-growth or through-growth, a stiffness substantially equivalent to cortical bone, and structure distributing loads through the spacer substantially without transferring the loads through higher-stiffness structures.

Abstract: A pivotal bone anchor assembly includes a receiver having a cavity for receiving the head of a shank, a first channel for receiving an elongate rod, and an axial bore extending upward from a bottom opening of the receiver to a discontinuous thread adjacent a top of the receiver with opposed alignment members protruding inwardly beneath the discontinuous thread. The assembly also includes a pressure insert having a second channel for receiving the underside of the elongate rod, a lower surface for applying downward pressure on the shank head, and an outer cylindrical surface with opposite elongate recesses. The pressure insert is loaded into a first position within the axial bore and then rotated into a second position in which the opposed alignment members become positioned within the opposite elongate recesses to hold the second channel of the pressure insert in alignment with the first channel of the receiver.

Abstract: A pedicle screw system applicable to affixation medical systems is provided. The system comprises a screw tulip comprising a rod receiving channel configured to receive a spinal rod, a shank configured to anchor the screw tulip and spinal to a pedicle. A bushing disposed between an interior surface of the screw tulip and a first end of the shank, wherein the first side of the bushing channel is defined by a top edge of a first wall of the bushing, a second side of the bushing channel is defined by a top edge of a second wall of the bushing, and the bushing channel is set at an angle defined by the top edge of the first wall and the top edge of the second wall.

Abstract: Systems, devices and methods related to retractor systems that retract tissue to allow access to a surgical site are described. The retractor systems can include a first rotatable arm attachable to a first blade, a second rotatable arm attachable to a second blade and a third linearly translatable arm attachable to a third blade. An attachment mechanism that is attachable to a fourth blade can be removably coupled to a mount on the frame. The retractors systems can also include two blade systems whereby when the retractor is in a closed configuration, the two blades form an oval opening.

Abstract: The present invention relates generally to medical devices and methods generally aimed at spinal surgery. In particular, the disclosed system and associated methods relate to performing spinal fixation with the use of a deformity system.

Abstract: A bone fixation assembly includes a plurality of bone fixation elements that each include a bone anchor configured to be implanted into underlying bone, such as a vertebra. Each bone anchor is received in an anchor seat, and the anchor seats are joined by a fixation rod so as to operatively couple and fix the position and orientation of the vertebrae relative to each other. The bone anchor is free to rotate relative to the anchor seat, and is also free to pivot in a desired direction relative to the anchor seat.

Abstract: A system for replacing at least a portion of a natural facet joint includes a fixation member implantable in a vertebra, an inferior facet articular surface and an inferior strut which may be formed separately from the inferior articular surface. The inferior strut has a first end securable to the fixation member and a second end which may comprise a sphere with a hemispherical surface. An attachment mechanism may include a capture feature shaped to receive the second end of the inferior strut, and the mechanism may provide an adjustable configuration, allowing polyaxial adjustment between the inferior articular surface and the second end. A locking member may be actuated to exert force on the second end to provide a locked configuration. The system may further include a superior facet joint implant with a superior articular surface shaped to articulate with the inferior articular surface.

Abstract: The cephalomedullary nailing system of this invention contributes to solving three main problems: reduce fractures, improve assembly biomechanics to ensure the load axis is favorable as possible for bony fragments and prevent femoral neck collapse as well as offset and limb length loss, hence avoiding the possibility of reduced abductor power. The system is based on specific screw channel geometry and the placement of an additional locking screw, allowing the nail to turn 360° and facilitating nail insertion through the screw.

Abstract: Lamina plate assemblies, systems, and methods thereof. A lamina plate assembly may be configured to provide lamina support following laminectomy, for example, in cervical and lumbar cases. The lamina plate assembly may include a generally elongate body having a first free end, a second free end, and a posterior portion disposed between the first free end and the second free end. Different embodiments of securing portions are used to secure the lamina plate assembly to a vertebra.

Abstract: A receiver of a bone anchor includes a base and a pair of upright arms extending upward from the base to define an open channel for receiving an elongate rod, with the upright arms having opposed interior surfaces with a discontinuous guide and advancement structure formed therein and side outer faces opposite the opposed interior surfaces extending downward across the base to a bottom of the receiver. A horizontally-elongated upper tool engaging groove is formed into the side outer face of each upright arm that extends to at least a front face or back face of the upright arm and that includes a downwardly-facing upper surface, an upwardly-facing lower surface, and an outwardly-facing inner surface. A vertical tool-engaging groove is also formed into the side outer face of each upright arm that extends downward from a top surface of the upright arm through to a level below the lower surface of the upper tool engaging groove.

Abstract: A spinal implant apparatus that is an expandable spacer including features to minimize or eliminate spacer cant or offset during and after completing the expansion process. The spacer includes a top component, a base component in engagement with the top component, and an expansion mechanism arranged to change the top component's position with respect to the base component. The mechanism for causing expansion may be a screw, a cam, a wedge or other form of distracting device. In one embodiment, the expandable spacer includes a base component with a set of towers and a top component with a set of corresponding silos, where the towers and silos are configured to minimize or eliminate tilt of the top component as it extends upwardly from the base component.

Abstract: A tissue retractor having a central body, a posterior housing slidably coupled to the central body via a first two way overrunning clutch, a posterior arm slidably coupled to the posterior housing via a second two way overrunning clutch, a right arm rotatably coupled to the central body via a hinge pin and third two way overrunning clutch and a left arm rotatably coupled to the central body via a hinge pin and fourth two way overrunning clutch.

Abstract: A retractor assembly and minimally invasive surgical techniques and implants. Such embodiments include techniques and implants for provision of therapy to a spine from a lateral approach. Embodiments of the invention include minimally invasive surgical techniques using one or more extended retractors to create an extended access route such as the non-limiting example of lateral access to the spine.

Abstract: A system includes a screw tower, an instrument, and a housing. The instrument includes a driver shaft extendable longitudinally through the screw tower, and a threaded sleeve mounted on a proximal portion of the driver shaft. The housing includes one or more retention members coupleable to the screw tower, and a threaded button threadably coupleable to the threaded sleeve. The threaded sleeve is rotatable about a longitudinal axis to urge the driver shaft longitudinally relative to the screw tower.

Abstract: Provided is a variable lordotic expanding implant with a centralized graft deployment delivery channel (tube) with (or without) an expanding footprint mesh component which is deployed by graft material injection.

Abstract: The present invention is an implant for bone. The current implant is particularly useful in spinal surgical procedures.