Implants, guides, devices, system and corresponding instruments for use in securing two bone segments together are disclosed. More specifically, a dynamic bone plate system is disclosed. The plate system includes a bone plate with at least one deformable member that is received within the bone plate. The bone plate construct also includes at least one coupling member for engaging the at least one deformable member to connect it to the bone plate system. The bone plate system also includes a plurality of bone fasteners for attaching the bone plate to the two bone segments. Methods for using the dynamic bone plate system to secure two bone segments together are also disclosed.

A bone plate can be used to fixate one or more bones. In some examples, a bone plate has first, second, third, and fourth fixation holes. The first and second fixation holes may be located in a distal body region of the bone plate and co-linear with a bridge central longitudinal axis. The third and fourth fixation holes may be located in a proximal body region of the bone plate, with the third fixation hole co-linear with the bridge central longitudinal axis and the fourth fixation hole offset from the bridge central longitudinal axis in a first plane by a first angle and in a second plane by a second angle.

A sternal closure system for closing an opening in a sternum includes an implant and a plate pair comprised of first and second plates. The first and second plates secure with the sternum across the opening. The implant, in an insertion shape, inserts through the first and second plates and into the sternum across the opening, and then, upon a movement toward a natural shape, holds the opening closed while interconnecting the first and second plates. The sternal closure system alternatively includes an implant with a bridge having first and second apertures and first and second legs extending from the bridge. The implant, in an insertion shape, inserts into the sternum across the opening, and then, upon a movement toward a natural shape, holds the opening in the sternum closed. The implant, at the first and second apertures, receives fixation devices therethrough that engage the sternum.

A fixation mechanism in which a first thread groove extending in one turning direction and a second thread groove extending in a turning direction opposite to the one turning direction and intersecting the first thread groove are formed in a first member-side thread portion of a first member. The thread divided portion being formed as a result of the first thread groove and the second thread groove intersecting each other. A second member-side thread portion of a second member can be screwed to the first thread groove of the first member-side thread portion. The second member is fixed at a suitable angle 0 relative to the first member.

Disclosed herein are bone plates, bone plate systems, and methods of use thereof that can include a bone plate that includes a plate frame and first and second anvils. The plate frame can have a first surface and define a first opening and a second opening. Each of the first and second anvils can include first and second plates, and a body located in between the first and second plates. The first plate can have a first surface arranged to rest against the first surface of the plate frame when the bone plate is implanted. The second plate can be sized to pass into each of the first and second openings. The body can define a through hole sized to receive a fastener. When the bone plate is implanted, the plate frame can be moveable relative to the first and second anvils.

An orthopedic fixation device and bone plating system for fracture fixation and methods for using the bone plating systems.

In an osteosynthesis device with a plate and a screw for fixing the plate on a bone, the head of the screw includes a thread for its locking with the internal thread in its receiving hole. The internal surface of the plate hole includes a first frustoconical section that extends at an angle 30-60° with respect to the hole central axis, and a second frustoconical section that extends between the first frustoconical section and the plate lower face, at an angle 8-12° with respect to the hole central axis. The internal surface of the hole also includes at least three upper undercuts, and at least three lower undercuts, which upper and lower undercuts allow a degree of freedom in angulation of the screw, and also preserve a portion of hole internal thread on all the generatrices of the hole internal surface located in planes parallel to the central axis.

A bone plate has an outer surface, a bone-facing surface opposite the outer surface, and an interior surface that defines a hole extending from the outer surface to the bone-facing surface along a central hole axis. The interior surface further defines a ramp that extends from the outer surface toward the bone-facing surface and plate threads that extend from the ramp toward the bone-facing surface and are configured for optional locking engagement with external threads on a first head of a locking bone fixation member. The interior surface further defines a contact profile in a reference plane that extends along the central hole axis. The contact profile is defined at least by the ramp and is spaced from the central hole axis in an offset direction perpendicular to the central hole axis. The contact profile is configured to translate the bone plate in the offset direction responsive to contact with an exterior surface of a second head of a compression bone fixation member as the second head advances within the hole along an insertion axis that is offset from the central hole axis in the offset direction.

An orthopedic plate has a first end including a locking screw hole that receives a locking screw and spaced from that hole is a closed compression housing that extends from the bone-facing side of the plate and which receives a compression screw that forms an angle of from about 10° to about 70° with a longitudinal axis of the plate. The compression housing is not located on the medial line of the plate, but is peripheral to the medial line, either in the longitudinal or the medial direction of the plate.

Bone fixation systems include various combinations of stabilizing members, dynamic elements, fasteners, and locking mechanisms. Bone plates receive dynamic bone staples and bone screws. Other dynamic elements include elbow pegs, straight pegs, and wire pegs.