A method includes tracking one or more of a plurality of bones of a patient, adjusting a relationship between the plurality of bones to a desired rotation between the plurality of bones, and creating an implant placement plan based on the relationship. The implant placement plan includes a placement of a plate across the plurality of bones. The method also includes robotically assisting preparation of the plurality of bones to receive the plate in accordance with the implant placement plan.

An implant for insertion into a disc space between vertebrae, wherein the implant includes a spacer portion, a plate portion coupled to the spacer portion, two bone fixation elements for engaging the vertebrae and a retention mechanism for preventing the bone fixation elements from postoperatively backing-out of the plate portion. The retention mechanism may be in the form of a spring biased snapper element that is biased into communication with the bone fixation elements so that once the bone fixation element advances past the snapper element, the snapper element is biased back to its initial position in which the snapper element interfaces with the bone fixation elements. Alternatively, the retention mechanism may be in the form of a propeller rotatable between a first position in which the bone fixation elements are insertable to a second position where the bone fixation elements are prevented from backing-out.

Devices, systems, and methods of bone stabilization. The bone stabilization system includes a bone plate having an upper surface and a lower surface configured to be in contact with bone, the bone plate having an opening extending from the upper surface to the lower surface. The opening is configured to receive a fastener, which may be either a locking fastener or a compression fastener. The locking fastener has a threaded head portion configured to engage and lock to the bone plate, and the compression fastener is configured to dynamically compress the bone.

An orthopedic implant can be used for fixation of a joint or fracture and can include a tapered member and at least one fixation member. The tapered member can be configured for placement in association with one or more bone segments. The tapered member can have a longitudinally extending body that defines an upper surface portion, an opposed lower surface portion and first and second sides, where at least the first and second sides can be formed of porous metal and can have a porous metal outer surface. The at least one fixation member can be integrally formed with the tapered member and can extend laterally outwardly from the tapered member body. The at least one fixation member can be configured to secure the implant to the one or more bone segments to provide fixation of the one or more bone segments relative to the tapered member.

A bone locking system is applied to join multiple broken bone fragments, including a self-tapping nut having a cylindrical structure, the self-tapping nut having an outside surface including an external threading portion, the external threading portion being formed, through recessing, a tapping notch, the self-tapping nut having an inside surface including an internal threading portion, a tool portion being formed in the inside surface of the self-tapping nut at an upper end thereof, the self-tapping nut being embedded in a cortical bone portion of each broken bone fragment; and a fixing bolt corresponding to the internal threading portion of the self-tapping nut, the fixing bolt being screwed into and fixed in the self-tapping nut to join each of broken bone fragments. A bone plate having a fixing hole is selectively provided. The fixing bolt penetrates through the fixing hole of the bone plate and is screwed into the self-tapping nut.

An anterior cervical plate system is provided. The cervical plate includes a retention ring with a deflectable flange that is upwardly spaced from the top surface of the ring and configured to prevent an inserted bone fastener from backing out of the plate. The plate includes a locking pin having a camming surface and a blocking surface. When the camming surface is moved into position adjacent to the flange, the flange is free to flex out of the way of a bone screw being inserted into or removed from the plate. When the blocking surface is positioned adjacent to the flange, outward deflection of the flange is prevented to retain the bone screw inside the plate. The locking pin is rotated through a camming surface to bring a blocking surface against the flange deflecting the flange onto the head of the bone screw.

Lamina plate assemblies, systems, and methods thereof. A lamina plate assembly may be configured to provide lamina support following laminectomy, for example, in cervical and lumbar cases. The lamina plate assembly may include a generally elongate body having a first free end, a second free end, and a posterior portion disposed between the first free end and the second free end. Different embodiments of securing portions are used to secure the lamina plate assembly to a vertebra.

A bone plate and one or more locking assemblies that help prevent screw backout without impinging on therapeutically valuable settling of the screws. In some cases, the locking assembly is configured to be attached to the plate, to be securely but efficiently locked, to be readily unlocked for revision surgery, and/or to reduce the possibility of operator error in installation by providing simplified visible and tactile indicia of the locked and unlocked positions.

A force measuring apparatus is described. The apparatus includes a force concentrator. The force concentrator is configured to attach to a loadbearing medical device and to produce a transverse force related to an eccentric axial force applied to the loadbearing medical device. A bending stiffness of the force concentrator is different from a bending stiffness of the loadbearing medical device.

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.