A multi-member prosthesis including first and second elongated members and a central member, said multi-member prosthesis adapted to be advanced into a pilot SI joint opening in said dysfunctional SI joint via a posterior approach, the pilot SI joint opening comprising a sacrum opening and an ilium opening and a sacrum opening. The first elongated member adapted to be press-fit into the sacrum opening and the second elongated member adapted to be press-fit into the ilium opening. The central member including first and second elongated member securing means adapted to secure the first and second elongated members thereto.

Systems, devices, and methods for treating the spine are disclosed herein. Medical devices can be positioned along a subject's spine to treat various conditions and diseases. The medical device can include an actuator assembly and a clamp assembly. The actuator assembly can be positioned at an interspinous space between a superior spinous process and an inferior spinous process. The actuator assembly can be used to reconfigure the clamp assembly such that the clamp assembly clamps onto the superior and inferior spinous processes.

A disposable guide device for spinal surgery comprises two tubular guide bodies extending along respective main axes between a proximal end and a distal end to guide a surgical operation on a vertebra of a patient, a plurality of support feet projecting laterally relative to each guide body, near said proximal end, each defining a contact area configured to abut on a side of the spinous process or on a lamina or facet or transverse process of the vertebra of the patient, in a mating configuration, at least one junction element extending between the guide bodies, starting from the respective distal ends, in order to space them from each other, wherein the guide bodies are oriented so that the proximal ends are more distant from each other with respect to the distal ends.

Spinal device/implants are provided, comprising a spinal device/implant and a sensor.

A fiber optic tracking sensor includes an outer tube, a plurality of optical fibers within the outer tube and including a central optical fiber and a plurality of additional optical fibers, and one or more structural members within the outer tube and configured to provide a spacing between the plurality of optical fibers such that the central optical fiber is positioned along a central longitudinal axis of the outer tube and the plurality of additional optical fibers are spaced apart from one another and from the central optical fiber.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.

An anti-skive bone drill assembly is provided, and may be used for spinal surgical procedures. The anti-skive assembly can include a sheath, a drill bit disposed within the sheath, and a mechanism for maneuvering the drill bit within the sheath. The anti-skive assembly, and particularly the sheath, may be mounted in a surgical robot. The anti-skive assembly may be used to side cut a bone to create a flattened surface in an otherwise non-perpendicular bone surface.

Methods and systems are disclosed for accessing and treating the interior of the facet joint for vertebral distraction and immobilization. The systems include a number of tools that facilitate access to the facet joint, distraction of the articulating decortication of the articulating surfaces, and delivery of implants and agents into the facet joint for fusion.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.

The invention involves a retraction distraction blade system suitable for use with retractor and distractor tools for the implantation of intervertebral implants into the spine area of an animal, particularly humans. The retractor distractor blade includes structures for attaching the blade to a retractor or distractor tool to provide visual access to a surgical site. The blade is provided with a threaded member connected to a flexible lasso for securement around a portion of a pedicle screw or bone screw. Once the lasso is secured to the pedicle screw, the retractor is prevented from moving out of the surgical site. Operation of the distractor or retractor tool can then be utilized to provide distraction to the spinal vertebrae for implant insertion or spinal alignment. Once the procedure is sufficiently complete, the lasso can be removed from the pedicle screws.