A prosthesis for implantation in a de-nucleated intervertebral disc includes a fiber ring-like layer which encloses a polymeric layer to create an annular space. The annular space is inflatable with an in-situ curable liquid polymer and forms an interior cavity. The annular space may be expanded uniformly or differentially to be tailored to the needs of a particular vertebral segment and to achieve optimal disc space width and angle, thereby stabilizing the segment while preserving normal motion of the vertebral segment. The interior cavity provides a void that allows inward deformation of the implant during weight bearing activities and bending. The prosthesis can be elastically deformed through axial elongation to a reduced profile to load into a delivery cannula using pulling techniques.

An expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.

An intervertebral device comprises a plurality of struts that are rotatably associated with each adjacent strut to form a modifiable inner volume V for bone graft containment.

A system for implanting an interbody device between adjacent vertebrae comprises an interbody device having a plurality of lobes extending outwardly from a longitudinal rib, and having a relaxed shape approximating the shape of the disc being replaced. An insertion guide has a bore therein from a proximal end to a distal end thereof to accept the interbody device in an unrelaxed shape. The distal end is shaped for insertion into an intervertebral space. The insertion rod may be positioned within the bore of the insertion guide whereby the interbody device is positioned within the intervertebral space by advancing the insertion rod into the insertion guide.

A spinal implant comprises an implant body extending between an anterior surface and a posterior surface. The implant body includes a first vertebral engaging surface and a second vertebral engaging surface. The implant body includes an outer surface that defines an oblique surface. A wall is connectable with the implant body and translatable relative to the oblique surface. Systems and methods are disclosed.

An expandable trial can include an inferior portion, a superior portion, and a middle expanding portion as well as load cells for monitoring the load on the trial. The trial may also include recesses on its lateral sides to provide spacing to accommodate a disc removal tool so tissue can be cleared monitoring load. In addition, neural foramen spacing can be monitoring to provide information about how much neural release has been achieved as the disc is cleaned and the spine is positioned and repositioned.

The present disclosure provides an intervertebral cage including superior and inferior members each including an engagement surface for engaging a corresponding vertebrae. The intervertebral cage also includes a posterior member that extends between a posterior end of the superior and inferior members and spaces them from each other in a superior-inferior direction. The superior and inferior members extend in a posterior-to-anterior direction from the posterior member and define anterior free ends to form a substantially open anterior end between the superior member and the inferior member in a posterior-anterior direction. The engagement surfaces of the superior and inferior members substantially diverge from each other in the superior-inferior direction along the posterior-to-anterior direction. The superior and inferior members each include first apertures extending therethrough in the superior-inferior direction that define a pathway through the intervertebral cage in the superior-inferior direction.

A method of revising a patient having a fusion cage implanted within a spinal column, involving percutaneously delivering a first end of a tube to the spinal column, fluidly connecting the first end of the tube to the fusion cage, and delivering a bone growth agent into the fusion cage through the tube.

Described herein are devices and methods for fusion of adjacent vertebral bones of a subject using distractor platforms for the exposure and resection of at least a portion of the facet joint, such as in performance of a TLIF procedure. In one embodiment, the distractor platform contains at least a first receptacle and/or extension that are adapted to couple to the implanted screw/bone marker and the method includes advancing a first threaded segment of a first bone fastener assembly into the identified first pedicle of the first vertebral bone, wherein the first bone fastener assembly further comprises a second segment that is adapted to couple with a distraction platform adapted to concurrently attach onto at least one tissue retention blade and is adapted to retain the tissue retention blade in the displaced position.

A semi-synthetic hybrid material having a pH from 7 to 7.4 includes an inorganic fraction and a cross-linked organic fraction. The method for producing this material, and osteosynthesis devices or implants made of semi-synthetic hybrid material are also described.