A device for spinal correction includes a stabilizer assembly including a hinge including a first rod-bearing leaf; a second rod-bearing leaf rotatably coupled to the first rod-bearing leaf to provide coronal or sagittal freedom of movement, or both, of the stabilizer assembly; a locking mechanism to lock the first and second rod-bearing leaves at a desired angle; a first stabilizing rod coupled to the first rod-bearing leaf; a second stabilizing rod coupled to the second rod-bearing leaf; and a plurality of monoaxial or polyaxial links, wherein each monoaxial or polyaxial link is movably coupled to the first or second stabilizing rod and is movably couplable to a first spinal rod or a second spinal rod fixed to the spine; wherein the stabilizer assembly is couplable to the first or second spinal rod to stabilize the spine to prevent compression, distraction, or translation of the spinal cord during a spinal correction.

In one aspect, a surgical retractor having sliders configured to have tissue engaging members connected thereto and slider drives including operating members. The operating members are rotatable to cause the slider drives to shift the sliders relative to one another. The surgical retractor includes a coupler having a coupling configuration wherein the coupler connects the slider drives and rotation of one of the operating members causes movement of the sliders. The coupler also has a decoupling configuration wherein the coupler disconnects the slider drives and rotation of the one operating member causes movement of fewer sliders than the sliders that are moved with the coupler in the coupling configuration. The retractor has an actuator connected to the coupler and movable between a dependent slider movement position and an independent slider movement position to shift the coupler between the coupling configuration and the decoupling configuration.

A device for spinal correction includes a stabilizer assembly including a hinge including a first rod-bearing leaf; a second rod-bearing leaf rotatably coupled to the first rod-bearing leaf to provide coronal or sagittal freedom of movement, or both, of the stabilizer assembly; a locking mechanism to lock the first and second rod-bearing leaves at a desired angle; a first stabilizing rod coupled to the first rod-bearing leaf; a second stabilizing rod coupled to the second rod-bearing leaf; and a plurality of monoaxial or polyaxial links, wherein each monoaxial or polyaxial link is movably coupled to the first or second stabilizing rod and is movably couplable to a first spinal rod or a second spinal rod fixed to the spine; wherein the stabilizer assembly is couplable to the first or second spinal rod to stabilize the spine to prevent compression, distraction, or translation of the spinal cord during a spinal correction.

Devices for retracting tissue during a minimally-invasive, posterior spinal fusion procedure include a blade positionable along a passageway device connected to a connecting element implanted in a vertebra of the spine, such that the blade covers at least a portion of a longitudinal opening of the passageway device. The blade may be coupled to the passageway device by receiving the passageway device with a receiving portion. Systems for displacing the vertebrae of the spine include first and second extenders, the distal ends of each of which are configured to engage the connecting elements. Each extender may include a shaft configured to be securely engaged within a cage of the respective connecting element. The devices and systems of the present invention may be used in connection with an interbody fusion technique performed through an opening extending between the passageway devices, and an intermediate retractor blade may provide additional tissue retraction.

Spinal correction surgical techniques and methodologies for correction of scoliosis using non fusion anterior scoliosis correction, including soft tissue releases, unique correction techniques such as de-rotation, and unique single and dual anchor screw/cord applications.

A system and method for reducing spondylolisthesis. The system includes a bracket comprising a first opening and a second opening, a first and second rod, and a first and second knob. The system may be placed onto a patient's back, the rods may be inserted through the first opening and the second opening and further into a first vertebral part and a second vertebral part. Tightening of a first knob and a second knob on the first and second rod allow for repositioning of the vertebra. Once repositioned, an interspinous implant may be inserted into the interspinous process space, connecting the vertebrae.

Surgical tissue retraction systems and methods are described herein. Such systems and methods can be employed in some embodiments to provide medial-lateral tissue retraction to increase access to a surgical site. In one embodiment, a surgical instrument can include a body configured to couple to an implantable anchor, a first tissue manipulating implement coupled to the body and capable of polyaxial movement relative thereto, and a second tissue manipulating implement coupled to the body and capable of polyaxial movement relative thereto. Further, the first and second tissue manipulating implements can be opposed to one another such that they can move any of toward and away from one another.

Disclosed is a surgical alignment and distraction frame and associated methods of use that facilitates correction of a sagittal imbalance. The alignment and distraction frame works in conjunction with pedicle screw installation guide assemblies to impart the desired correction. The alignment frame can be utilized to ensure the pedicle screw housings are aligned (to facilitate rod coupling) in concert with the completion of a correction maneuver.

A pedicle screw system and/or a spinal stabilization system includes a pedicle screw having a screw shaft with an external thread and having a screw head supported on the screw shaft in a ball-and-socket joint relationship therewith. The screw head includes a connecting element receptacle for a connecting element of a spinal stabilization system. The pedicle screw system further includes a bone alignment device and a coupling device for at least one of force-locking coupling and form-locking coupling of the bone alignment device and the screw shaft when in an alignment position.

Problem to be Solved A traverse that is percutaneously provided and a surgical instrument for percutaneously providing the transverse are provided. Solution A rod 10 is placed in each of two rod openings 113, 123 and a transverse bar 130 is inserted in two bar holes 111, 121. Set screws 140, 150 are screwed in screw holes 114, 124. The set screws 140, 150 press the transverse bar 130, thereby restraining the transverse bar 130 in the longitudinal direction. Since portions of the bar holes 111, 121 adjoin the rod openings 113, 123, the pressed transverse bar 130 contacts the rods 10 and pushes the rods 10 against the rod openings 113, 123. A protrusion 127 engages with the rods 10 to restrain hooks 110, 120 in the longitudinal direction and circumferential direction of the rods 10.