A method of assembling a surgical construct includes installing a fastener within a bone of a patient. A connector rod is positioned on the fastener and an interference or press fit is created between the fastener and the rod, with very little effort required on the surgeon's part. No additional steps are necessary or desirable; the surgeon can simply position the rod over the fastener, and very quickly and accurately couple the two one to another. A securing device can be used to couple the fastener and the rod, and a different device can be used to uncouple the fastener from the rod. The securing device engages the fastener and the rod, and pushes the rod over the fastener as the surgeon activates the gripping mechanism.

A pivotal bone anchor system for securing an elongate rod to patient bone includes a plurality of bone anchors, with each having a rounded capture portion with a capture recess extending circumferentially around a midsection thereof. The system also includes one or more multi-planar receiver sub-assemblies, each comprising a multi-planar receiver defining a cavity with a seating surface, and a multi-planar pivoting retainer configured for multi-planar motion upon engagement with the seating surface and having an inner surface configured to snap into the capture recess to capture the bone anchor within the multi-planar receiver cavity. The system further includes one or more uni-planar receiver sub-assemblies, each comprising a uni-planar receiver defining a cavity with a spherical seating surface, and a uni-planar pivoting retainer configured for uni-planar motion upon engagement with the seating surface and also having an inner surface configured to snap into the capture recess to capture the bone anchor within the uni-planar receiver cavity. The capture portions of the bone anchors are configured for capture by either a multi-planar receiver sub-assembly or a uni-planar receiver sub-assembly without further modification or adjustment to the bone anchor capture portion.

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a plate that is seated between the receiver member and the rod and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a hook that extends out from the receiver member to hook onto an anatomical structure or another implant to augment the fixation of the assembly's primary bone anchor. Surgical methods using the bone anchor assemblies described herein are also disclosed.

A bone stabilization implant includes a stabilization plate provided with anchor orifices intended to receive bone anchor screws and a locking element secured in rotation to a pivot shaft pivotally mounted in a bore of the plate and movable between a rest position and a locking position of the bone anchor screw. The locking element is integrally disposed inside a recess and its lower face has a central area bearing on a bottom wall of the recess and at least one peripheral area adapted to at least partially cover an anchor orifice in the locking position. The lower face has a convex shape according a radial axis extending radially to its peripheral area.

A ratcheted spinal device including a variable-length member including a ratchet mechanism that has an operative configuration that allows a change in length of the variable-length member in one direction and prevents a change in length of the variable-length member in an opposite direction, wherein the variable-length member includes polyaxial-joint attachment members for attachment to bone, which permit pivoting movement of the attachment members about more than one pivoting axis.

Systems and methods of treating spinal deformity, including one or more intervertebral implants to be introduced laterally into respective intervertebral spaces, a plurality of bone screws introduced generally laterally into vertebral bodies adjacent to the intervertebral implants and/or the intervertebral implants themselves, and a cable dimensioned to be coupled to the bone screws and manipulated to adjust and/or correct the spinal deformity.

A bone anchoring element comprising a shaft (2) for anchoring in a bone, with a plurality of barb elements (7) arranged in at least one helical line around the shaft axis (M) is described, wherein said barb elements are elastically movable relative to the shaft. The bone anchoring element (1) is easy to press into a core hole bore in a bone. The barb elements (7) act in a similar manner as do the threads on a conventional bone screw and thus provide for depth positioning. Moreover, the barb elements at the same time secure the bone anchoring element and prevent it from sliding-out.

An extender system is configured to couple a vertebral bone anchor that has been previously implanted in a vertebra, or is newly implantable in a vertebra, to an adjacent bone, which can be an additional spinal level or an occiput, for example. The extender system includes an extension member having a body and an engagement member coupled to the body. The extension member defines an aperture extending through the engagement member. A screw is configured to attach the extension member to the vertebral bone anchor. The extension member can be fastened to the adjacent bone.

A spinal construct includes a coupling member including a first mating surface engageable with an existing fastener implant. The existing fastener implant being connected with an existing spinal rod implant. A connector is engageable with the existing fastener implant and has a rod extending therefrom. A locking member is engageable with a second mating surface of the coupling member. Systems, surgical instruments, implants and methods are disclosed.

A medical instrument has a connector configured for being fixed to a spine support, and a rib support connected to the connector and configured for supporting the rib. The medical instrument has a pair of an upper hook and a lower hook provided on the rib support. One of the upper hook and the lower hook is fixed to the rib support so as to be vertically adjustable. The rib support is connected to the connector to be movable in a direction along the rib.