A spinal implant includes an implant body extending between an anterior surface and a posterior surface. The implant body includes a first vertebral engaging surface and a second vertebral engaging surface. The implant body defines a cavity. A plate is connectable with the implant body via a coupling member adjacent the cavity and is translatable relative thereto. The coupling member has a portion including a frangible torque limit. The plate defines at least one opening oriented to implant a fastener with tissue. Systems, spinal constructs, surgical instruments and methods are disclosed.

A method of implanting a medical implant comprises the steps of reaming a tapered bore to a first depth and a counter bore, coaxial to the tapered bore, to a second depth less than the first depth in a long bone. The counter bore has a larger diameter than the tapered bore. The method further includes inserting a medical implant into the tapered bore and counter bore. The medical implant includes a stem and a collar disposed around a portion of the stem. Inserting the medical implant include fully seating a portion of the stem into the tapered bore to form a press-fit between the stem and the long bone. The collar may be moved into the counter bore to a depth less than the second depth.

Misaligned bones on opposite sides of a joint are aligned using a first rigid extension securable to one of the misaligned bones using a particular surgical approach, and a second rigid extension having a contacting surface positionable in contact with the other the two misaligned bones from the same surgical approach. The first and second rigid extensions are moved with respect to each other using a lever, whereby a pulling force is exerted on one of the bones, and a pushing force on the other, thereby aligning the first and second misaligned bones.

Trial joint inserts have posts at different positions relative to the base. During joint replacement surgery, a surgeon can test different positions for a post using a trial insert, identify a suitable position for the post, and then select a permanent insert with a post in the desired position. The devices and methods in this application allow a surgeon to provide an individualized joint replacement for a patient. Joint inserts may be configured so the post moves relative to the base. The post may be adjustably positionable, may lock in place, or may be actuated by a resistance member such as a spring.

Various embodiments of an intervertebral implant comprise a body extending longitudinally along a primary axis, a baseplate, a plurality of elongated arms having a vertebral support surface, the arms being articulated such that the implant has a folded-back position in which the arms are close to each other, and a deployed position in which the arms are moved away from each other, and expansion means between the folded-back and deployed positions, comprising at least two branches pivotably mounted relative to each other and attached to the elongated arms by guide means such that translation of the expansion means parallel to the primary axis causes pivoting of the branches and moves the arms away from each other.

An adjustable bone implant having a body configured to be secured to a first bone surface; an anchoring member configured to be secured to a second bone surface held at a raised position offset from the first bone surface, and a spacing member connecting the anchoring member to the body in an adjustable manner, to selectively space the anchoring member from the body, where the spacing member is located subcutaneously, where the spacing member is configured to receive an input via a transcutaneoustransmission from an external tool, and where the spacing member is configured to lower the first bone surface from a raised position upon receipt of the input and secure the first bone surface at the lowered position.

Disclosed is an expandable interbody fusion implant that is configured to have an initial configuration having a first footprint width suitable for being inserted into an intervertebral space and an expanded configuration having a second footprint width that is greater than the first footprint width. The implant may include a first body member and a second body member that is pivotally coupled to the first body member. The implant may be expanded using an inflatable balloon. The implant may be expanded bilaterally such that both body members rotate relative to the other or the implant may be expanded unilaterally such that one of the body members rotates relative to the other.

A cortical shaft bone fixation apparatus includes a housing having a leading portion and a trailing portion, the leading portion configured to fit within a diameter of an affected cortical shaft bone, the leading portion having first and second sections. The apparatus further includes an expansion mechanism adapted to transition the first and second sections from a first position to a second position, the first and second sections providing an outward force against the inside surface of the cortical shaft bone when the first and second sections transition from the first position to the second position, the trailing portion of the housing abutting a leading end of the affected cortical shaft bone. The trailing portion of the housing includes a pair of angled tapers extending inwardly toward each other to a minimum separation distance at an extreme end of the housing.

The disclosure claims a lumbar interbody fusion cage for treating lumbar spondylolisthesis via a lateral approach. The lumbar interbody fusion cage comprises a supporting frame body, wherein upper and lower blades are mounted on the upper and lower end surfaces of the supporting frame body, a distracting component for driving the upper and lower blades to axially distract along a lumbar interbody and an orthotopic moving component for driving the upper and lower blades to move along the lumbar interbody back and forth are mounted in the supporting frame body, the upper and lower blades respectively extend to form lateral lobes, fixing holes through which fixing nails penetrate are formed on the lateral lobes, the fixing nail of the upper lateral lobe penetrates backward from bottom to top in a slanting way to give a certain rear thrust to the slipped lumbar vertebrae and help reduction of the lumbar spondylolisthesis, and the fixing nailing of the lower lateral lobe penetrates forward from top to bottom to give a forward thrust to the lumbar vertebrae and help the reduction of the lumbar spondylolisthesis. The lumbar interbody fusion cage can solve both an intervertebral spacing and dislocation arisen from forward and backward lumbar spondylolisthesis, has easy operation and small pain to patients, and is safer and more reliable.

A vertebral fixation plate system and a method for its use in a surgical procedure to fuse adjacent spinal vertebrae to each other. A base member is fastened to a spinal interbody fusion device installed in place of an injured spinal disc. The base member is received within a receptacle defined in the vertebral fixation plate and mates with the plate, in a selected one of a plurality of available positions of the plate with respect to the base member, and thus with respect to the adjacent vertebrae between which the spinal interbody fusion device is installed. A locator member defined on the base member or the plate is mated in a locating cavity defined in the other one of the base member or the plate to keep the plate in the selected position.