An expandable vertebral body replacement is presented. The device has an inner and outer housing longitudinally moveable on one-another which locks in place using a retention member. This can be locked or fortified by several described options. Also presented is a method for expanding said device embodiments and a system for an expandable vertebral body replacement.

A total artificial expansile disc and a method for posterior insertion between a pair of vertebral endplates are disclosed. The total artificial expansile disc includes at least one pair of substantially parallel plates that move apart along a first axis, in order to occupy a space defined by the vertebral endplates. In another embodiment, each of substantially parallel plates includes a first plate and a second sliding plate. An expansion device or tool is used to move the substantially parallel pair of plates apart along the first axis. A core is disposed between the pair of plates, and the core permits the vertebral endplates to move relative to one another. A ball limiter or ball extender prevents the core from being extruded from between the substantially parallel plates.

Embodiments herein are generally directed to vertebral implants and implant trials for use with vertebral implant assemblies. In some embodiments, these implants and implant trials may be used in conjunction with corpectomy procedures.

This present subject disclosure provides a novel implant which is readily adjustable to provide a precise angle of lordosis. The implant may be positioned while in low profile, collapsed geometry, and may be expanded when in place to provide a precise angle of lordosis.

A method of treating a spine includes implanting a spinal implant within a patient. The spinal implant includes a first member having a first wall defining an axial passageway and a first opening, the first opening being in communication with the axial passageway. A second member includes a second wall defining an axial channel having the first member disposed therein, the second wall defining a second opening in communication with the axial channel. Bone graft is injected through the first opening and into the axial passageway and through the second opening and into the axial channel after the spinal implant is implanted within the patient.

A geared cam expandable spinal implant. Rotational motion of a rotating portion is translated into linear motion of a yoke, which moves geared cams at the distal end of the implant to mate with, and walk along, teeth of corresponding racks. The walking of the gear cam teeth along the rack teeth creates a regular rate of implant expansion, reduces initial excessive expansion force applied to the implant, and provides fine adjustment of the expansion rate and force.

An expandable implant includes a body portion, a carriage portion, a deployment assembly, and an expandable portion. The deployment assembly and the expandable portion are attached to the carriage portion, and portions of the carriage portion are moveable out of and into the body portion. When the expandable implant is inserted into a disc space, the expandable portion is expandable to push the upper vertebral body and the lower vertebral body away from one another.

A spinal implant device for placement between vertebral bodies includes a housing, at least one screw member in the housing, and at least one drive shaft operably engageable with the screw member. The housing includes a first shell member and a second shell member. At least the first shell member has step tracking comprising a plurality of individual riser members for receiving the at least one screw member. The height of the plurality of individual riser members may change along the step tracking. The drive shaft may be operable to rotate the at least one screw member, causing the at least one screw member to move on the plurality of individual riser members. The at least one screw member comprises an external helical thread having a thickness configured to fit in the gaps between adjacent individual riser members, and is engageable with the first and second shell members, whereby the first and second shell members move relative to each other in response to the rotation of the at least one screw member to effect an expansion of the housing or a contraction of the housing from the expansion by reversing the rotation of the at least one screw member.

A glenoid implant system for use in a reverse total shoulder replacement of a patient that includes a movable glenosphere, a baseplate, and a connector for movably connecting the glenosphere to the baseplate. The glenosphere and the baseplate are configured so that a central axis of the glenosphere is movable non-axially relative to a central axis of the baseplate. Further disclosed is a method having the steps of exposing and resecting a bone, securing a baseplate into the bone with the baseplate having a central axis, securing a glenosphere to the baseplate and non-axially moving the glenosphere relative to the central axis of the baseplate. Also disclosed is a method that includes the steps of rotating an arm in a medial direction, moving a glenosphere anteriorly relative to a baseplate attached to a glenoid, rotating the arm in a lateral direction, and moving the glenosphere posteriorly relative to the baseplate.

A method of inserting and positioning an intervertebral spacer is provided. The spacer includes a longitudinal axis, an on-axis interface coincident with or parallel to the longitudinal axis, and an off-axis interface angled to the longitudinal axis. The spacer's front end may be curved. The method may include inserting the spacer into the disc space utilizing a tool to engage an on-axis interface and then to engage one or more of the off-axis interfaces, which may be used for further modification of the spacer. The tool is moved substantially along a single insertion direction, which may be substantially parallel to a posterior-anterior axis of the disc space. The method may result in the longitudinal axis of the spacer being perpendicular to the insertion direction, or substantially parallel to a medial-lateral axis of the disc space. The spacer may also be positioned in an anterior aspect of the disc space.