A hinged bone screw and tool set is used for implanting such bone screws in a human spine, followed by the implantation of a longitudinal connecting member into the bone screws. The hinged bone screw includes a shank with an upper portion and a receiver with integral arms forming a U-shaped channel. A lower curved seat partially defining the U-shaped channel cooperates with an upper portion of the bone screw shank for hinged movement of the shank with respect to the receiver. The tool set includes an insertion tool, a bone screw driver, a reduction tool and a closure starter. The insertion tool includes a bone screw attachment structure and a laterally opening channel. The insertion tool further includes a threaded portion for cooperation with the reduction tool to provide synchronized placement of a closure structure in the bone screw receiver while reducing and capturing a longitudinal connecting member within the receiver. Further alternative bone screws are hinged, polyaxial or fixed and include lordosing or kyphosing lateral surfaces.

A method for treating vertebrae comprises the steps of: connecting at least one fastener with portions of vertebrae; providing a fastener comprising a first portion including a receiver defining an implant cavity and a member disposable with the implant cavity and movable relative to the receiver, and a second portion defining a longitudinal axis and being configured to penetrate vertebral tissue, wherein the receiver is non-pivotable relative to the longitudinal axis and connecting the fastener to the vertebrae; providing a longitudinal element; connecting a first portion of the longitudinal element with the at least one fastener; derotating the vertebrae to a selected orientation; and connecting a second portion of the longitudinal element with the fastener to substantially maintain the vertebrae in the selected orientation. Systems are disclosed.

A pedicle screw implant construct kit, comprising at least one pedicle screw, at least one collar comprising a recess for receiving a rod, the collar configured to be coupled to a head of the pedicle screw, an elongated rod for connecting the collar to one more additional collars to couple between the pedicle screw and one or more additional screws, and a locking ring sized to be positioned over at least a distal portion of the collar to restrain relative movement of the screw head and rod by exerting radial compression force onto the collar. In some embodiments, the components of the kit are comprised of carbon reinforced composite material, optionally with no radiation blocking material. In some exemplary embodiments of the invention, the kit includes two locking rings on a collar, optionally both below the rod.

A pivotal bone anchor assembly includes a shank sub-assembly comprising a shank and a coupler, and a receiver sub-assembly comprising a receiver having a bore with a bottom opening and a snap-fit assembly proximate the bottom opening comprising an insert, a retainer ring positioned within an expansion chamber, and a positioner configured to hold the retainer ring in position. The shank sub-assembly is uploaded through the receiver bottom opening such that the positioner is pushed up into a holder chamber and the retainer rings engages a circumferential locking groove of the coupler to secure the shank sub-assembly with the receiver sub-assembly with a snap-fit connection.

A fastener device includes an anchor body that defines a through hole. The anchor body further includes an inner surface that defines a least a portion of the through hole. The fastener includes a head, a threaded shaft that extends out with respect to the head in a distal direction, and a neck between the head and threaded shaft. The head includes an outer surface configured to articulate along the inner surface when the fastener head is inserted in the through hole. At least a portion of the outer surface is convex and defines a portion of a sphere that defines a first diameter. The neck defines a second diameter and the fastener defines a ratio of the first diameter to the second diameter in a range between about 2 to 1 and about 3 to 1.

A bone fastener comprises a first member defining an implant cavity and a groove configured for disposal of a band. The first member includes a part disposed with the implant cavity and engages with the band to provisionally fix the part relative to the first member. A second member is configured to penetrate tissue and includes a base that moves the part and engages the band to connect the members. Implants, systems, instruments and methods are disclosed.

A spinal stabilization system for surgical implantation in the spine having a bone fastener. The bone fastener is provided with a head portion and a shaft portion. A housing is also provided with a recess defined by sidewalls and an opening for receiving the head portion of the bone fastener. A seating element is disposed within the housing and positioned over the head portion of the bone fastener. An elongate rod is positioned on the seating element within the recess of the housing. The system also includes a cap capable of engaging with a top portion of the housing and capturing the elongate rod within the recess of the housing when the cap is rotated. The bone fastener articulates in a single plane with respect to the housing and the seat element.

An anchor assembly can be couplable to a bone and can include an anchor and a housing. The anchor can include a shank securable to bone and a head coupled to a proximal portion of the shank. The housing can include a proximal portion including an anchor bore and a distal portion including a secondary bore configured to engage the anchor to limit angulation of the anchor relative to the housing.

A spinal implant includes a first member having an inner surface defining an implant cavity and at least one mating element. A second member includes a head and a shaft configured to penetrate tissue. The head includes at least one mating element engageable with the at least one mating element of the first member and a part. A third member includes an inner surface engageable with the part such that the members comprise a bone fastener having a selected movement. Systems, instruments and methods are disclosed.

The present invention is generally directed to orthopedic fixation devices that comprise a coupling element and a bone fastener, whereby the bone fastener can be loaded into the coupling element through the bottom of a bore in the coupling element. The orthopedic fixation devices described herein can include modular locking clamp assemblies that can be fixed onto fasteners that are already implanted in bone. The modular locking clamp assemblies can include polyaxial locking clamp assemblies, as well as monoaxial locking clamp assemblies.