A compressor/distractor system for operating on a spine is disclosed. The system includes two rod reducers which each advance a spinal rod into the shoulder portion of a pedicle screw. Each rod reducer includes an inner member, an outer member, and a pair of gripping members. Each outer member receives and advances the spinal rod into the pedicle screw. The outer member also includes a through slot which receives the proximal end of each of the pair of gripping members which may limit the longitudinal translation of the outer member with respect to the inner member. The compressor/distractor system may include a compressor/distractor device which has a compressing, a distracting, and a neutral configuration. A method for using the minimally invasive rod reducers with the compressor/distractor system to secure at least two pedicle screws in desired positions on a spinal rod is also disclosed.

Method for performing spinal correction surgery. The method includes creating at least one access opening in a patient, and implanting a plurality of anchor devices through the at least one access opening onto a plurality of corresponding vertebral bodies. Each anchor device has a channel defined therein. The method further includes disposing a tether into the channel of each of the plurality of anchor devices. A first end portion of the tether is secured to a first of the plurality of anchor devices. Additionally, the method includes translating the vertebral body corresponding to the selected anchor device using a pusher tool. Furthermore, the method includes applying a tension to the tether using a tensioner.

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.

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.

Some embodiments provide systems, assemblies, and methods of analyzing patient anatomy including providing an analysis of a patient's spine. The systems, assemblies, and/or methods can include obtaining initial patient data, and acquiring spinal alignment contour information. Further, the systems, assemblies, and/or methods can assess localized anatomical features of the patient, and obtain anatomical region data. The system, assemblies, and/or method can analyze the localized anatomy and therapeutic device location and contouring. Further, the system, assemblies, and/or method can output localized anatomical analyses and therapeutic device contouring data and/or imagery on a display.

A system for correcting a lateral curvature of a spine that can include a plurality of screws configured to be implanted in a plurality of vertebrae, and a plurality of extensions configured to be removably coupled with the plurality of screws. Some embodiments of the plurality of extensions can be curved, bent, angled, and/or offset along at least a portion thereof and can be removably coupled with a screw head of each of the plurality of screws. The system can include a connecting element or rod that is configured to be coupled with the plurality of screw heads. Some embodiments of the system can be configured such that the rod can be guided along the plurality of extensions from the proximal toward the distal end portions of the extensions and into engagement with the plurality of screws to cause the plurality of vertebrae to move laterally.

The disclosure relates to a surgical system and related methods to facilitate reduction and fixation of sacro-iliac luxations/fractures (SIL/F) in small animals, for example dogs and cats. In another aspect, the disclosure relates to an aiming device and related methods providing accurate, reliable, and safe fixation of SIL/F in such small animals. The surgical system includes a work surface, an articulatable and lockable reduction arm mounted to the work surface, a reduction handle mounted to the reduction arm; an articulatable and lockable fixation arm mounted to the work surface, a fixation drill guide mounted to the fixation arm, and an image acquisition unit directed toward the work surface. The surgical system provides enhanced safety to surgical personnel using the system in terms of reduced exposure to harmful radiation form the image acquisition unit.

The present disclosure provides systems and methods for preparing a spinal rod that enable the digital mapping of rod contours to produce spinal rods that conform to an ideal rod trajectory, which reduces spinal rod to screw head misalignment. Reducing spinal rod to screw head misalignment helps reduce a failure rate of spinal rods in patients. In invasive spinal fusion surgeries, a digital three-dimensional representation may be generated of a flexible rod formed to align with screws installed in the patient. In minimally invasive surgeries, a digital three-dimensional representation may be generated using pointers. A surgeon may adjust the digital three-dimensional representation via a graphical user interface. Bending instructions may be generated from the digital three-dimensional representation that direct how a spinal rod should be bent using a bending tool. The final spinal rod accounts for the anatomical environment around the screws installed in the patient.

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.

Methods and systems for axial spinal derotation for ameliorating or correcting aberrant spinal column deviations, such as but not limited to those associated with scoliosis. The systems and methods help facilitate the application of significant derotational forces to individual vertebrae and posterior elements. The present invention describes a two-piece system comprising a pivot tool with a handle and a saddle reducer, e.g., a temporary rod. The systems herein can replace more complex systems for axial spinal derotation. The systems have the advantage of axial rotation off of one rod instead of two.