A modular apparatus for extending a rod in an existing spinal construct comprises a modular rod connector for attachment to the existing rod and a modular rod extender that may be selectively attached to the rod connector. Each rod connector includes a spherical head that is formed to have the same size and configuration such that any selected modular rod extender may be attached to a selected rod connector. Each rod connector comprises an attachment portion having an opening for receipt of a portion of the rod of an existing spinal construct. Each modular rod extender comprises an extender body including a common modular attachment feature at one end for receipt of the spherical head of the selected rod connector, and an extension rod extending from an opposite end to extend the existing spinal rod.

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 spinal construct includes a body defining a transverse axis. The body includes a wall disposed between a first implant cavity and a second implant cavity. The body further defines a first opening communicating with the first implant cavity and a second opening communicating with the second implant cavity. The first opening defines a first axis and the second opening defines a second axis. At least one of the first axis and the second axis are disposed in a substantially non-perpendicular orientation relative to the transverse axis. Systems, surgical instruments, implants and methods are disclosed.

A method is provided for correcting a curvature or deformity in a patient's spine based on the digitized locations of implanted screws. The method is implemented by a control unit through a GUI to digitize screw locations, accept one or more correction outputs, and generate one or more rod solution outputs shaped to fit at locations distinct from the implanted screw locations.

This invention relates to a surgery planning tool, which is not a patient implant, comprising an elongated body including at least a portion having the shape and the size of a spinal correction rod.

A pedicle screw assembly including a bone fastener having a lower end for engaging bone and an upper end remote from the lower end; a head having a rod-receiving channel attached to the upper end of said bone fastener; a spinal rod insertable into the rod-receiving channel of said head, said spinal rod having an outer surface extending between first and second ends thereof, wherein at least one of the first and second ends has a reduced diameter section. A spinal rod having an outer surface extending between a first end and a second end thereof; wherein the outer surface of said spinal rod has a reduced diameter section at at least one of the first and second ends.

According to some embodiments, the process includes the steps of: a) taking a sagittal preoperative x-ray of the vertebral column of the patient to be treated, extending from the cervical vertebrae to the femoral heads; b) on that x-ray, identifying points on S1, S2, T12 et C7; c) depicting, on the said x-ray, curved segments beginning at the center of the plate of Si et going to the center of the plate of C7; e) identifying, on that x-ray, the correction(s) to be made to the vertebral column, including the identification of posterior osteotomies to make; f) pivoting portions of said x-ray relative to other portions of that x-ray, according to osteotomies to be made; g) performing, on said x-ray, a displacement of the sagittal curvature segment extending over the vertebral segment to be corrected; h) from a straight vertebral rod (TV), producing the curvature of that rod according to the shape of said sagittal curvature segment in said displacement position.

A device for accessing and guiding at least one fixation device to a spine may include a distal portion configured to fit in a facet of the spine and a proximal portion extending from the distal portion. The proximal portion may be detachable from the distal portion and may be hollow or solid. A system for accessing and guiding at least one fixation device to a spine may include a distal portion configured to fit in a facet of the spine, a proximal portion extending from the distal portion, and a slidable guide device for sliding over the facet guide device to guide at least one instrument to the spine.

A bone anchor implant assembly configured for surgical implantation into a bone of a patient. The bone anchor implant assembly includes an elongate rod, a separate shank and head, and a closure mechanism configured as a one-part closure or two-part closure. The one-part closure and two-part closure are configured to be interchangeable with each other for closing a channel of the head and locking the assembly and the elongate rod between arms of the head with the closure mechanism.

A spinal distraction system, according to one aspect, includes an adjustable spinal distraction rod comprising first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members. The system includes an anchor rod configured for mounting to a bone of a subject, the anchor rod having one or more spring-biased tabs disposed at one end thereof, and a connector having first end and a second end, the first end having a receiving cup configured for detachable mounting on the anchor rod, wherein the one or more spring-biased tabs are configured to engage with an inner surface of the receiving cup, the connector having a second end operatively coupled to an end of a first member and wherein the second member is configured for mounting to a second bone of a subject.