Abstract: A uniplanar bone anchor including a housing and a bone screw is provided. The lower region of the housing defines mating elements that mate with engaging elements on the bone screw to limit movement of the housing relative to the bone screw to a single plane.

Abstract: A uniplanar bone anchor including a housing and a bone screw is provided. The lower region of the housing defines mating elements that mate with engaging elements on the bone screw to limit movement of the housing relative to the bone screw to a single plane.

Abstract: A uniplanar bone anchor including a housing and a bone screw is provided. The lower region of the housing defines mating elements that mate with engaging elements on the bone screw to limit movement of the housing relative to the bone screw to a single plane.

Abstract: A uniplanar bone anchor including a housing and a bone screw is provided. The lower region of the housing defines mating elements that mate with engaging elements on the bone screw to limit movement of the housing relative to the bone screw to a single plane.

Abstract: A bone screw including a housing including a threaded opening defined between first and second legs extending from a base portion of the housing, and a threaded closure member configured to be threaded into the threaded opening of the housing between the first and second legs to secure a connecting member in a channel of the housing. The threaded closure member includes a first thread and a second thread intertwined with the first thread, and the threaded opening includes a first discontinuous thread and a second discontinuous thread intertwined with the first discontinuous thread.

Abstract: A driver instrument for engaging and transferring rotational torque to a bone screw assembly which includes a shaft and sleeve adapted to engage and couple the bone screw assembly into a single coaxial unit while the bone screw assembly is being driven into a bone and then to release the bone screw assembly from the driver instrument. The driver instrument includes an elongate shaft, a sleeve, and bone screw assembly engaging features on the elongate shaft and/or the sleeve.

Abstract: The disclosure relates to systems and methods of spinal stabilization. Embodiments include minimally invasive methods of delivering a rod having a non-circular cross-sectional profile using a wire having an accommodating non-circular cross-sectional profile to inhibit movement of the rod relative to the wire. A rod or a segment of the rod having a non-circular cross-sectional profile may be aligned with the wire and advanced and coupled to bone fastener assemblies which are anchored in vertebrae. The rod is then securely seated in collars of the bone fastener assemblies to stabilize the spine.

Abstract: The disclosure relates to systems and methods of spinal stabilization. Embodiments include minimally invasive methods of delivering a rod having a non-circular cross-sectional profile using a wire having an accommodating non-circular cross-sectional profile to inhibit movement of the rod relative to the wire. A rod or a segment of the rod having a non-circular cross-sectional profile may be aligned with the wire and advanced and coupled to bone fastener assemblies which are anchored in vertebrae. The rod is then securely seated in collars of the bone fastener assemblies to stabilize the spine.

Abstract: An interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first end plate, a second end plate, and an intermediate member disposed therebetween. The end plates are configured to allow bone in-growth. The intermediate member may include features to engage the end plates and to prevent over insertion of the intermediate member within the end plates. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.

Abstract: An interbody vertebral implant for facilitating fusion of adjacent vertebrae. The implant includes a first end plate, a second end plate, and an intermediate member disposed therebetween. The end plates are configured to allow bone in-growth. The intermediate member may include features to engage the end plates and to prevent over insertion of the intermediate member within the end plates. The implant may include a cavity extending through the composite implant configured to receive bone growth material to facilitate fusion between a first vertebra and a second vertebra.

Abstract: A system and associated method are provided for mechanically fixating a region of a skull to a portion of a spine. A plate is provided to contact a region of a skull and be secured thereto. A spinal rod is configured to extend from a location adjacent the plate to a location adjacent at least one vertebra. An adjustable housing is provided to secure the rod to the plate, and has a first position wherein the relative position of the rod to the plate can be adjusted and a second position wherein the relative position of the rod to the plate is secured.

Abstract: A spine stabilization system having cylindrical bodies, plates, transverse members and resilient inserts for coupling a rod to bone fasteners. A first resilient insert may be positioned on a first rod. A cylindrical body, plate or transverse member may be positioned on the first resilient insert such that the first resilient insert is in a passage. A second resilient insert may be positioned on a second rod and positioned in the cylindrical body, plate or transverse member. The resilient inserts are advanced into the cylindrical body, plate or transverse member to lock the resilient inserts in place and couple the rods.

Abstract: The disclosure relates to systems and methods of spinal stabilization. Embodiments include minimally invasive methods of delivering a rod having a non-circular cross-sectional profile using a wire having an accommodating non-circular cross-sectional profile to inhibit movement of the rod relative to the wire. A rod or a segment of the rod having a non-circular cross-sectional profile may be aligned with the wire and advanced and coupled to bone fastener assemblies which are anchored in vertebrae. The rod is then securely seated in collars of the bone fastener assemblies to stabilize the spine.

Abstract: The disclosure relates to systems and methods of spinal stabilization. Embodiments include methods of delivering a rod having a non-circular cross-sectional profile using a wire having an accommodating non-circular cross-sectional profile to inhibit movement of a rod relative to the wire. A surgical system can comprise a first sleeve advanced via a first incision to a vertebra, a second sleeve advanced via a second incision to another vertebra, a wire having a non-circular cross-sectional profile advanced via a third incision to the vertebrae and passed through the collars of bone fastener assemblies to extend from a fourth incision. A rod or a segment of a rod having a corresponding non-circular cross-sectional profile may be aligned with the wire and advanced and coupled with the vertebrae to stabilize the spine. After the rod is securely seated in the collars, the wire may be withdrawn from the body.

Abstract: A spine stabilization may include a rod and bone fastener assemblies. Each bone fastener assembly may include a bone fastener and a collar. Each bone fastener may have a threaded shank and a head. Each collar may have a first end with a cavity for accommodating the bone fastener and a second end having a channel for accommodating the rod. The channel may have a first portion for positioning the rod. The channel may have a second portion for advancing the rod, wherein rotating the collar advances the rod in the channel.

Abstract: A spine stabilization system having cylindrical bodies, plates, transverse members and resilient inserts for coupling a rod to bone fasteners. A first resilient insert may be positioned on a first rod. A cylindrical body, plate or transverse member may be positioned on the first resilient insert such that the first resilient insert is in a passage. A second resilient insert may be positioned on a second rod and positioned in the cylindrical body, plate or transverse member. The resilient inserts are advanced into the cylindrical body, plate or transverse member to lock the resilient inserts in place and couple the rods.

Abstract: One embodiment provides a system which can include a pair of plates pivotably coupled to each other by a hinge. The plates can attach to posterior surfaces of vertebrae. The posterior surfaces can be on vertebral facets or can be exposed by removal of the facets. The hinge can be coupled to the plates in such a manner that the hinge is positioned adjacent to a center of rotation about which the vertebrae rotate relative to each other when the spine extends or flexes. The hinge can include a ball and socket, pin and pin hole, screw, etc and a sealing jacket. The system can include a piston for allowing the system to stretch and compress with the spine. Travel stops can be included in the hinge and piston. Multiple levels of the spine can be stabilized by systems with pairs of plates keyed to align with each other.

Abstract: Methods, instruments, and kits for attaching cranial plates. One embodiment implements a method which includes releasably attaching a plate to an instrument (using retaining members of the instrument) and placing the plate on a cranium (using an elongated and offset handle of the instrument). The method can include drilling a hole in the cranium, tapping the hole, and placing the screw in the hole using the instrument which defines a pattern of holes corresponding to, a pattern of holes on the plate. The drilling of the hole, tapping of the hole, and placing of the screw can occur by engaging one of the instrument holes with, respectively, a drill bit shank, a tap shank, and a screw head having a common diameter corresponding to a diameter of the instrument hole. The method can include selecting the plate, the drill bit, the tap, and the screw from a kit.

Abstract: The disclosure relates to systems and methods of spinal stabilization. Embodiments include methods of delivering a rod having a non-circular cross-sectional profile using a wire having an accommodating non-circular cross-sectional profile to inhibit movement of a rod relative to the wire. A surgical system can comprise a first sleeve advanced via a first incision to a vertebra, a second sleeve advanced via a second incision to another vertebra, a wire having a non-circular cross-sectional profile advanced via a third incision to the vertebrae and passed through the collars of bone fastener assemblies to extend from a fourth incision. A rod or a segment of a rod having a corresponding non-circular cross-sectional profile may be aligned with the wire and advanced and coupled with the vertebrae to stabilize the spine. After the rod is securely seated in the collars, the wire may be withdrawn from the body.

Abstract: Disclosed are devices and systems for spinal fixation and dynamic stabilization. Elongated members may be positioned lateral to spinous processes and coupled to two or more vertebrae. Interspinous members may be positioned between adjacent spinous processes and coupled to the elongated members. One embodiment of an interspinous member comprises a body and two lateral portions. The lateral portions may couple to the elongated members to position the interspinous members. An interspinous member and the positioning of the interspinous member may allow selected movement between the adjacent spinous processes.