A spinal device includes a rod which has a first end disposed in a housing and a second end which protrudes out of the housing through an aperture and which is movable to protrude more out of the housing or less out of the housing. A biasing device, mounted on the rod, includes a series of connected at-least partial coils. A first end of the biasing device is arranged to abut against the housing and a second end of the biasing device, opposite to the first end, is affixed to the rod.

Methods of correcting a spinal deformity, including securing a first rod on a first side of a spine, securing an anchor on a second side of a spine, securing a lateral coupling between the rod and the anchor, translating and/or derotating the spine and securing a second rod on a second side of the spine to provide secondary stabilization to the spine.

Devices, systems and methods for use in spinal surgeries. The system may include a fastener system comprising a fastener, a staple, and a locking cap. A cord may extend along the spine and through at least one fastener system. An instrument may be provided for tensioning the cord. The system may, for example, apply fixation on the convexity of the scoliotic vertebrae to limit growth on the convex side and allow unilateral growth on the concave side.

A pivotal bone anchor assembly includes a receiver having a central bore with an integral downward facing surface below a helically wound guide and advancement structure and a first interference surface, and a compression insert configured for top-loading into the central bore into a first position and then being rotatable about the receiver longitudinal axis into a second position defined by an engagement between a second protuberant interference surface of the compression insert and a first interference surface of the central bore. The compression insert further includes radially offset upwardly facing surfaces configured for biased engagement with a downward facing surface of the central bore upon completion of rotation to the second position, and the receiver further includes one or more inwardly extending integral non-resilient structure positionable into one or more outer alignment grooves of the compression insert, also upon the completion of rotation to the second position.

A spinal rod assembly includes a flexible spinal fusion rod including link members that articulate with one another so that the rod is formable into a curved orientation. A locking mechanism is coupled to the link members and can lock the link members so that the rod is maintained in the curved orientation.

An interspinous fusion device is described. It includes a first member with a column of teeth, and a second member with a column of recesses adapted to mate with the column of teeth of the first member. The first member and the second member have opposing windows on their walls, such that when the first member is mated with the second member an unobstructed passage is formed through the opposing windows. The first member and the second member lock together when the teeth and recesses are mated, said locking occurring without the aid of a set screw, pin or other mechanical component.

Disclosed are various embodiments for forming spinal rod members for use in pedicle screw systems for spinal fixation surgery and systems. A system can include a pedicle screw having a pedicle screw head and a pedicle screw shaft, the pedicle screw head comprising an aperture for receiving and retaining a spinal rod member relative to the pedicle screw. The spinal rod member can include an elongated tubular membrane having a flexible body and a spinal rod body formed of a compound, where the spinal rod body is formed by insertion of a liquid compound into the elongated tubular membrane and a hardening of the liquid compound or other similar process for conversion of the flexible rod to a rigid rod. The pedicle screw head can include a channel configured to receive and retain the spinal rod member.

An interspinous fusion device is described. The interspinous fusion device includes a spacer member and an anchor member. The spacer member has a ring with two or more anchor assemblies projecting laterally from substantially opposite sides of the spacer member ring. The spacer member further has a first zip lock flange and a second zip lock flange, each of the first and second zip lock flanges extends transversely from the spacer member ring wherein each of the first and second zip lock flanges each comprises a series of teeth protruding from it. The anchor member has a ring with two or more anchor assemblies projecting laterally from substantially opposite sides of the anchor member ring. The anchor member further has a barrel extending transversely from the anchor member ring. The barrel comprises a first column of recesses adapted to mate with the teeth of the first zip lock flange and a second column of recesses adapted to mate with the teeth of the second zip lock flange. The spacer member is adapted to slide over the barrel of the anchor member such that the series of teeth of the first zip lock flange mates with the recesses in the first column of recesses of the barrel, and the series of teeth of the second zip lock flange mates with the recesses in the second column of recesses of the barrel to secure the spacer member to the anchor member.

The disclosure discloses methods, devices, systems and kits for repairing, replacing and/or augmenting natural facet joint surfaces and/or facet capsules. An implantable facet joint device of one embodiment comprises a cephalad facet joint element and a caudal facet joint element. The cephalad facet joint element includes a member adapted to engage a first vertebra, and an artificial cephalad bearing member. The caudal facet joint element includes a connector adapted for fixation to a second vertebra at a fixation point and an artificial caudal bearing member adapted to engage the cephalad bearing member. The artificial caudal bearing member is adapted for a location lateral to the fixation point. In another embodiment, an implantable facet joint device comprises a cephalad crossbar adapted to extend mediolaterally relative to a spine of a patient, the crossbar having opposite first and second ends, a connector element adapted to connect the crossbar to a first vertebra, a first artificial cephalad bearing member adapted for connection to the first end of the crossbar and adapted to engage a first caudal facet joint element connected to a second vertebra, and a second artificial cephalad bearing member adapted for connection to the second end of the crossbar and adapted to engage a second caudal facet joint element connected to the second vertebra.

An interspinous fusion device is described. The interspinous fusion device includes a spacer member and an anchor member. The spacer member has a ring with two or more anchor assemblies projecting laterally from substantially opposite sides of the spacer member ring. The spacer member further has a first zip lock flange and a second zip lock flange, each of the first and second zip lock flanges extends transversely from the spacer member ring wherein each of the first and second zip lock flanges each comprises a series of teeth protruding from it. The anchor member has a ring with two or more anchor assemblies projecting laterally from substantially opposite sides of the anchor member ring. The anchor member further has a barrel extending transversely from the anchor member ring. The barrel comprises a first column of recesses adapted to mate with the teeth of the first zip lock flange and a second column of recesses adapted to mate with the teeth of the second zip lock flange. The spacer member is adapted to slide over the barrel of the anchor member such that the series of teeth of the first zip lock flange mates with the recesses in the first column of recesses of the barrel, and the series of teeth of the second zip lock flange mates with the recesses in the second column of recesses of the barrel to secure the spacer member to the anchor member.