An allogeneic or xenogeneic implant for intervertebral disc replacement includes a body. The body may include one or both of a plurality of grooves or tubular apertures. The body may be formed of partially decalcified bone. The plurality of tubular apertures may be defined within the body and be positioned to allow inflow of decalcifying solutions for rapid and uniform decalcification. After partial decalcification, the body may be pliable and compressible.

Intervertebral disc prostheses and methods of use. An intervertebral disc prosthesis for installation in a spinal column may include a first intervertebral plate, a second intervertebral plate, and a removable insert core. The first intervertebral plate may engage one or both of the inferior vertebral endplate and the inferior ring apophysis of a superior vertebral body. The second intervertebral plate may engage one or both of the superior vertebral endplate and the superior ring apophysis of an inferior vertebral body. The removable insert core is located between and engages the intervertebral plates. A projection projects from one of the intervertebral plates toward the other intervertebral plate. The removable insert core at least partially surrounds the projection when installed. The removable insert core is removable from between the intervertebral plates and from around the projection while the intervertebral plates and projection remain installed.

The present invention relates generally to a prosthetic spinal disc for replacing a damaged or degenerated disc between two vertebrae of a spine. The present invention also relates to prosthetic spinal disc designs that have either or both interlocking and magnetic components.

A central inflatable distractor and a perimeter balloon are inserted into the disc space in uninflated configurations. The central inflatable distractor is then expanded, thereby distracting the vertebral endplates to the controlled height of the central inflatable distractor. The perimeter balloon is then inflated with a curable substance. The perimeter balloon expands as it is filled with the curable substance and conforms to the void remaining in the disc space around the central inflatable distractor, thereby creating a horseshoe shape. Once the flowable material in the perimeter balloon has cured, the central inflated distractor can be deflated and removed. The remaining void (or inner space) is then packed with graft for fusion.

An artificial replacement disk assembly comprised of a core in between two endplates. The endplates have outer surfaces that match the surface morphologies of the corresponding vertebral endplates. The endplates may have textured inner surface to form a strong fusion with the core during the fabrication process. The thick solid endplates strongly fused to the core create a very resilient implant. Gripping structures on the endplates may permit easy manipulation of the assembly during surgical procedures.

The present invention relates to an interspinous dynamic implant. Provided is an interspinous dynamic implant comprising: an upper plate which adheres to an upper spinous process; a lower plate which adheres to a lower spinous process; a movable part, coupled between the front portion of the upper plate and the front portion of the lower plate, for enabling the upper plate and the lower plate to move upwards, downwards, left and right within a certain range according to the movement of spinous processes; an upper spinous process coupling means for tightly coupling the upper plate to the upper spinous process; and a lower spinous process coupling means for tightly coupling the lower plate to the lower spinous process. The interspinous dynamic implant according to the present invention provides elasticity to the upper spinous process and the lower spinous process, thereby maintaining a space between the upper and lower spinous processes. Also, the interspinous dynamic implant moves by being integrated with the upper and lower spinous processes, and thus does not damage the spinous processes and has an effect of preventing a separation phenomenon from between the spinous processes. Further, the interspinous dynamic implant can move together with adjacent spinous processes according to the upward, downward, left and right movements of the adjacent spinous processes, and thus enables the movement of the upper spinous process and the lower spinous process to be more natural compared to conventional implants, thereby having an effect of not giving a burden to the spine. Also, the interspinous dynamic implant has an effect of enabling minimally invasive surgery since blades can be rotated and tightened using an instrument after inserting the interspinous dynamic implant from the side surface of spinous processes. Furthermore, after inserting the interspinous dynamic implant between adjacent spinous processes and tightening the blades at both side surfaces of the spinous processes, a plurality of spikes provided in the blades are tightly embedded in the both side surfaces of the spinous processes, and thus there is an effect that an upper blade and a lower blade are stably coupled to the upper and lower spinous processes. In addition, since the interspinous dynamic implant can be inserted between the spinous processes in a state where the upper blade and the lower blade are folded, the blades do not catch on the upper and lower spinous processes during insertion, and thus there is an effect that the interspinous dynamic implant can be inserted not only from the rear side of the spinous processes but also from the side surface of the spinous processes.

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body extending from an upper surface to a lower surface. The body has a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear walls such that an interior chamber is defined within the front and rear ends and the first and second walls. The body defines an outer perimeter and an inner perimeter extending about the internal chamber. At least one of the side walls is defined by a solid support structure and an integral porous structure, the porous structure extending from the outer perimeter to the inner perimeter. The porous structure embeds or encapsulates at least a portion of the solid support structure.

A bodiless bone fusion method, apparatus and device for insertion between bones that are to be fused together and/or in place of one or more of the bones, such as, for example, the vertebrae of a spinal column. The bodiless bone fusion device comprises one or more extendable plates, one or more extending blocks in communication with the extendable plates, one or more positioning elements for adjusting the extendable plates by manipulating the extending blocks, and one or more support panels for holding the positioning elements and guiding the extendable plates. The plates are able to be advantageously positioned in the confined space between the vertebrae to help brace the device until the bone has fused.

Methods and devices are disclosed for treating the vertebral column. An implant for treating the spine is provided comprising at least two articulations between the spacer and the bone facing surface of the fixation plate. Another implant for treating the spine is also provided, comprising two or more fixation plates attached to a spacer with two or more articulations, wherein the fixation plates are independently movable.

An improved flexible component used for dynamic stabilization of spinal segments for the treatment of vertebrae deformities and injuries and for the replacement of a complete or segment of the body of a vertebra in the spine is described. The flexible component is comprised of a solid, suitable implant material with a longitudinal bore the entire length and an appropriately formed slot which extends spirally around the shaft either continuously or segmentally. The flexible component may be encapsulated, fully or partially, in a suitable implant grade elastomeric resilient material. When used for a dynamic stabilization device, the component is attached to the vertebral bodies by pedicle screws know to those in the art. When used as a vertebral replacement device, attached to the component's opposite ends are members for attachment to the adjacent vertebra that allow for height and angular adjustment.