A device includes a core having proximal and distal ends and defining a first female thread. A drive screw includes first and second ends. The first end includes a first male thread. The second end including a second male thread that engages the first female thread. A first body includes a second female thread that engages the first male thread. A second body is coupled to the drive screw. A first plate is coupled to the core and the first body. The first plate includes a first vertebral engaging surface. A second plate is coupled to the core and includes a second vertebral engaging surface. The drive screw is configured to rotate relative to the core to simultaneously pivot the first plate relative to the core and alter a distance between the first vertebral engaging surface and the second vertebral engaging surface.

An implantable orthopedic support device and methods of using the device are disclosed. The device can have rigid structural components that can translate longitudinally with respect to each other, and in so doing can change the vertical height of the device. The structural components can be driven by a drivescrew mechanism to change the vertical height of the device.

A joint prosthesis implant includes a main body made mainly of ceramic and comprising a joint outer surface made of ceramic, of concave or convex shape, at least one tightening screw configured to tighten the main body on the patient's bone or on an intermediate element attached to said bone, and at least one added ring in the main body configured to distribute homogeneously in the main body the mechanical stresses caused by tightening the tightening screw.

Disclosed is a height-expandable spinal cage including an upper plate and a lower plate disposed to face each other, a frame disposed between the upper plate and the lower plate, the frame having a space formed therein, a block disposed between the upper plate and the lower plate and configured to be movable in a longitudinal direction inside the frame, and a driving bolt having one end thereof connected to the block to move the block. The height-expandable spinal cage is implanted into an affected area while occupying the minimum height thereof and to be expanded between vertebral bodies.

A spinal joint distraction system for treating a facet joint including articular surfaces having a contour is disclosed and may include a delivery device including a generally tubular structure adapted to engage a facet joint, an implant adapted to be delivered through the delivery device and into the facet joint, the implant comprising two members arranged in opposed position, and an implant distractor comprising a generally elongate member adapted to advance between the two members of the implant causing separation of the members and distraction of the facet joint, wherein the implant is adapted to conform to the shape of the implant distractor and/or the articular surfaces of the facet upon being delivered to the facet joint. Several embodiments of a system, several embodiments of an implant, and several methods are disclosed including a method for interbody fusion.

A dilation introducer for orthopedic surgery is provided for minimally invasive access for insertion of an intervertebral implant. The dilation introducer may be used to provide an access position through Kambin’s triangle from a posterolateral approach. A first dilator tube with a first longitudinal axis is provided. A second dilator tube may be introduced over the first, advanced along a second longitudinal axis parallel to but offset from the first. A third dilator tube may be introduced over the second, advanced along a third longitudinal axis parallel to but offset from both the first and the second. An access cannula may be introduced over the third dilator tube. With the first, second, and third dilator tubes removed, surgical instruments may pass through the access cannula to operate on an intervertebral disc and/or insert an intervertebral implant.

Devices and methods for treating one or more damaged, diseased, or traumatized portions of the spine, including intervertebral discs, to reduce or eliminate associated back pain. In one or more embodiments, the present invention relates to an expandable interbody spacer. The expandable interbody spacer may comprise a first jointed arm comprising a plurality of links pivotally coupled end to end. The expandable interbody spacer further may comprise a second jointed arm comprising a plurality of links pivotally coupled end to end. The first jointed arm and the second jointed arm may be interconnected at a proximal end of the expandable interbody spacer. The first jointed arm and the second jointed arm may be interconnected at a distal end of the expandable interbody spacer.

Devices and methods of correcting vertebral misalignment, including, e.g., spondylolisthesis, are disclosed. In one embodiment, a vertebral implant may include an assembly configured to be secured to a first vertebral body, wherein the assembly includes a frame made of a first material and at least one end plate made of a second material different than the first material; a reducing plate configured to be slidably received over the central portion, wherein the reducing plate is configured to be secured to a second vertebral body; and an actuator configured to move the reducing plate relative to the frame.

A humeral implant is disclosed. The implant has a humeral surface component and a stem. The humeral surface component has an articular surface and is configured for fixation to an articular portion of a proximal humerus. The stem is configured for post-surgery axial movement within the humerus. The stem is connected to the humeral surface component opposite of the articular surface. A method of implanting a humeral implant is also disclosed.

A fusion device includes an actuator including a shaft, a receiver disposed posterior to the actuator and configured to be coupled to the shaft of the actuator, and a first plate and a second plate each slidably coupled to the actuator. The first and second plates are configured to move away from each other when the fusion device transitions from a first state to a second state.