In one aspect, a bone anchor assembly is provided having a bone anchor with a head, a resilient locking cap extending about a portion of the bone anchor head, and a cap drive member having a depending annular wall. In another form, a bone plate system is provided including a bone plate having an elongated throughbore and a resilient support member received therein. In another aspect, an insertion device is provided for manipulating and inserting a spinal device at or within a spinal joint. The insertion device is configured to actively pivot the implant about the implant gripping end of the device and to allow manipulation and release of the implant in any pivoted orientation from approximately 0 to 90 degrees.

A locking element is configured to be used with a polyaxial bone anchor. The locking element including a central axis, a bottom side, a top side opposite to the bottom side, and a peripheral surface portion that extending completely around the locking element that has an external thread. The bottom side defines a first recess facing toward the bottom side for accommodating and applying a force in a direction toward the bottom side to at least the portion of the head of the polyaxial bone anchor. The top side defines a second recess having a non-circular cross-section in a plane perpendicular to the central axis for torqueable engagement with a driver.

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 spinal plate system that makes it possible to check the extent to which a screw for anchoring the device to a vertebra is inserted in the vertebra is proposed. The spinal plate system includes a fixing plate having a plurality of first fastening holes formed through a surface thereof, a plurality of screws, which are respectively inserted into the plurality of first fastening holes and are threadedly coupled to a vertebra, and a locking rivet, which is disposed adjacent to the plurality of fastening holes and which comes into contact with first ends of the plurality of screws so as to hold the plurality of screws, the locking rivet including an elastic portion, which is elastically deformed by the plurality of screws when the screws are inserted into the fixing plate and which is elastically restored after the screws are completely inserted to a predetermined depth.

An anterior cervical plate system with integrated locks which is additively manufactured as one component is disclosed. The anterior cervical plate system comprises a plate having at least one through hole configured to receive a bone screw for attaching the plate to a patient's bone. The plate includes a lock component adjacent to the at least one through hole. The lock component is connected to the plate such that the lock component is permitted to rotate with respect to the plate. The lock component has an unlocked position in which the locking ends of the lock component do not cover the head of the bone screw inside the through hole, and a locked position in which at least part of the locking ends engage the head portion of the bone screw to prevent the bone screw from backing out of the through hole.

A retaining plate with locking mechanism assembly includes a retaining plate having a first screw hole extending therethrough and a spring blocker rotatably mounted in plate proximate to the first screw hole. The spring blocker includes a body portion, a first land extending radially from the body portion above the retaining plate, and a first wing extending tangentially from the first land in a first arc. When a first screw is inserted into the first screw hole, when the spring blocker is rotated to a first position, the first land extends over a portion of the first screw. When the spring blocker is rotated to a second position, the first wing extends over the portion of the first screw. When the spring blocker is rotated to a third position, neither the first land nor the first wing extends over the portion of the first screw.

An interbody system including an implant and a tool for inserting and expanding the medical implant and locking the implant in place is disclosed. The medical implant may include an expandable body defined by a superior endplate and an inferior endplate that are hingedly coupled and may be expanded and lordosed. The superior and inferior endplate may include radially disposed and opposed surfaces that mate and/or directly contact each other when a locking screw is threaded through a screw aperture. The implant may include a threaded breakoff screw disposed in the threaded screw aperture and movable between a locked position and an unlocked position, for example. In the locked position, the threaded locking screw may urge the distal engagement surface of the first core into direct contact with the proximal engagement surface of the second core. When broken, the breakoff screw may comprise a recessed fracture surface.

A bellows shaped spinal implant, comprising an upper plate having an upper opening therethrough, a lower plate having a lower opening therethrough, and aa bellows shaped shell extending between and joining the upper plate and the lower plate. The bellows shaped shell is formed of titanium or an alloy comprising titanium and includes a wall extending continuously therearound that defines a hollow interior in communication with the upper opening and the lower opening. The wall has a thickness in the range of 0.5 mm to 1.0 mm to provide for radiographic imaging through the wall. The wall is angled or curved inwardly or outwardly between the upper plate and the lower plate to provide stiffness that mimics the stiffness properties of a similarly sized polyetheretherketone (PEEK) implant.

In one embodiment, an intervertebral implant includes a body and a locking element. The body includes a leading surface and a trailing surface opposite the leading surface. The body also includes first and second bone fastener passageways through the implant body and a cavity in between the first and second passageways. The cavity includes a trailing wall that separates the cavity from the trailing surface. The locking element is disposed in the cavity such that part of the locking element is visible through an access opening in the trailing wall so that the locking element may be rotated from outside of the implant. In a first rotational position, a first part of the locking element is located within one of the first and second passageways and in a second rotational position, the first part of the locking element is inside the body covered by the trailing wall.

A plate assembly for engaging at least two vertebral bodies of a human spine along the anterior aspect of the spine has a plate and at least two cam locks. The plate has a lower surface for contacting the vertebral bodies and an upper surface opposite to said lower surface. The plate assembly has a plurality of bone fastener receiving holes extending through said plate assembly from said upper surface to said lower surface. The plate has at least a first pair and second pair of said bone fastener receiving holes. The first pair is associated with a first of the vertebral bodies. The second pair is associated with a second of the vertebral bodies. A recess is associated with each of said at least first pair and second pair of said bone fastener receiving holes.