Abstract: Spinal bone anchor attachment device for improving the attachment of a bone screw to skeletal portions of a patient, the device reducing the risk of screw failure, and improving patient outcomes. The device is composed of a biomaterial compatible with bone and provides an enhanced surface area on outer surfaces of the device for engaging the bone, and an enhanced surface area within the device for engaging the bone screw. The device may also have a guiding slanted tip with a bias element for facilitating the placement of the device into bone tissue and rescuing an improper tract. The device may further be used to secure the placement of pedicle screws, and as a component of an intervertebral stabilization system commonly used in spinal fusion surgeries.

Abstract: A bone anchor system can comprise a fastener, a rod housing and a first directional component configured for connection to the fastener. The fastener can comprise a shaft having a shaft diameter, an anchoring projection on the shaft, and a head at an end of the shaft. The rod housing can be connected to the head of the fastener. The first directional component can comprise a first body portion having a first outer diameter larger than the shaft diameter, a first bore extending through the first body portion, the first bore sized to receive the shaft diameter, and a first locking component extending from the first body portion configured to engage the rod housing to limit movement of the housing.

Abstract: Medical devices and methods of using medical devices are disclosed. An example tissue retraction device includes a first engagement member having a first end and a second end, a second engagement member having a first end and a second end, a first elastic member attached to the second end of the first engagement member, and a first alignment member having a first end, a second end and a lumen extending therethrough. Further, the tissue retraction device has a first length, the first alignment member has a second length, the first elastic member extends within the lumen of the first alignment member and the second length of the first alignment member is less than or equal to the first length of the tissue retraction device.

Abstract: A medical device and method of expanding the maxilla of a patient via application of intra-orally generated forces and/or applying externally generated protraction forces to the maxilla of the patient is provided. The medical device can embody multiple configurations device that include skeletal anchorage device alone or in combination with a fixed aligner or an adjustable aligner.

Abstract: A fracture fixation system includes a plate having a laterally extending bore passing therethrough and configured to receive a first wire when the plate is placed in contact with a bone. The plate has a recess for receiving and securing a first end of a first wire, and includes an entry hole and an exit hole to at opposite ends of a first bore to allow the first wire to pass through the plate. A screw is configured to capture said the wire in the first bore to maintain a desired tension on the first wire.

Abstract: Devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display are disclosed.

Abstract: A pivotal bone anchor assembly includes a receiver having a central bore with a spherical seating surface adjacent a bottom opening and upright arms defining a channel for receiving a rod. The upright arms include side outer surfaces with horizontal tool engagement grooves spaced below top surfaces and having downwardly-facing upper groove surfaces and upwardly-facing lower groove surfaces that extend to front and back planar surface portions of the upright arms. The upright arms also include vertical tool engagement slots extending into and downward across the side outer surfaces from the top surfaces through to at least the upper groove surfaces of the horizontal tool engagement grooves. The assembly also includes a shank having an anchor portion for attachment to patient bone and a capture portion with a curvate lower surface configured for slidable engagement with the spherical seating surface of the receiver prior to locking the assembly with a closure.

Abstract: A TFL Protector for use during a total hip arthroplasty having a generally semi-circular or U-shaped elongate body includes a distal end, a proximal end, an elbow and a convex surface opposite a concave surface. The generally U-shaped or semi-circular elongated body extends from the distal end to the proximal end and the proximal end turns back toward back toward the distal end at elbow.

Abstract: A monolithic tissue screw fabricated of a single, unitary piece of material. The monolithic tissue screw has a helical coil portion and screw head portion with a driver aperture passing axially through the screw head portion and a co-axial with the helical coil portion such that a rotational torsional force applied by a mating driver to the driver aperture causes the helical coil portion to rotate about its axis. The helical coil portion engages tissue and draws the helical coil and the screw head portion into the tissue substantially only with the application of the rotational torsional force and substantially without an axial force applied to the tissue screw.

Abstract: System, including methods and devices, for fixing bone. The system may include a bone plate having two or more plate members connected to one another with one or more movable joints. Each joint may permit the orientation of the plate members to be adjusted relative to one another in a single plane or two or more nonparallel planes. The joint may have a movable configuration and a fixed configuration. Methods of creating the bone plate are also provided.

Abstract: A variable length headless compression screw insertion system includes a compression screw and a driver assembly for driving the compression screw into a bone. The compression screw has a bone screw and a compression sleeve coupled to the bone screw. The bone screw includes a proximal end having an external threading threadably received in the compression sleeve, and the compression sleeve includes a proximal end having a predefined drive feature and an external threading. The driver assembly includes a sleeve coupler adapted to threadably receive the external threading of the compression sleeve. A ram driver is coupled to the sleeve coupler and has a predetermined length such that its distal end is shaped to contact the proximal end of the bone screw to prevent translation of the bone screw relative to the compression sleeve.

Abstract: A two part annulus repair rivet for repairing a defect in the annulus of an intervertebral disc includes a first part delivered through a port and adapted to be positioned at an internal surface of an annulus adjacent a defect and a second part adapted to be positioned on an external surface of the annulus adjacent the defect. The first and second parts are secured together, repairing the defect.

Abstract: The present application describes various embodiments of guides that include one or more removable struts. The guides may include at least two guide portions that are connected to one another via at least one strut. In embodiments, the at least one strut may be designed such that it could be disconnected from at least one of the guide portions. The removable feature of the strut allows a surgeon to perform an osteotomy procedure by using the cutting slots and other relevant markings defined on the secured portions of the guide.

Abstract: The present invention provides an orthopedic implant comprising a continuous reinforced composite filament in a freely predetermined fiber orientation in multiple continuous successive layers, wherein the continuous reinforced composite filament comprises a bioabsorbable polymer matrix and a continuous bioabsorbable reinforcing fiber or fiber bundle, and whereby the continuous bioabsorbable reinforcing fiber or fiber bundle of consecutive layers at least partly intermingles and/or intertwines forming a three dimensionally interlocked continuous fiber structure.

Abstract: The bone screw with internal extendable is a bone screw with an internal, extendable tang. The tang—part of a tang system—is concealed within the body of the screw until after placement. After the screw is threaded into the bone, the internal tang system is pushed out of the bone screw body, forcing one or more tangs to extend out of the body and into the bone. A driver allows the user to control the different steps of insertion, including converting rotational motion of a knob into linear motion of a rod, the rod moving through the screw body to force the tang to exit the bone screw body. The one or more tangs preferably exit the bone screw body at a tang exit portal formed by one or more tang exit guide surfaces.

Abstract: A bone fastener system can comprise a fastener and a first sizing component. The fastener can comprise a shaft that provides an anchoring footprint. The first sizing component can be configured to be connected to the shaft and can include a first anchoring feature, or circumferential bone engaging feature, to increase a size of the anchoring footprint. The first anchoring feature can comprise a sleeve that radially expands a diameter of the threaded shaft. The first anchoring feature can comprise axially extending teeth. The system can further comprise a second sizing component including a second anchoring feature to increase the size of the anchoring footprint, the second anchoring feature being different from the first anchoring feature. The second anchoring feature can expand the diameter of the threaded shaft a greater amount than the first anchoring feature. The second anchoring feature can have a length greater than the first anchoring feature.

Abstract: An intervertebral prosthesis for insertion between adjacent vertebrae includes upper and lower prosthesis plates locatable against respective vertebrae and having opposing concavely curved recesses therein, and a core located between the plates. The core has opposed, convexly curved surfaces received in the recesses of the plates to allow the plates to slide in articulated manner over the core. The opposed surfaces of the core and the recesses of the plates have cooperating spherical curvatures. The recess of each plate surrounds a locating peg projecting centrally from the base of the recess and is bounded by an annular rim, such that the annular rims of the plates are arranged to contact one another at a predetermined limit of sliding movement of the plates over the core. The peg locates loosely in an opening located centrally in a curved surface of the core, whereby the plates can slide over the core in all directions while the peg holds the core captive.

Abstract: A transpedicular anchoring screw including a screw body having a first helical thread having:includes a proximal portion, having notched portions inscribed within notched angular sectors and separated by separation portions inscribed within separation angular sectors, where, over a screw pitch, a ratio between the sum of the measurements of the separation angular sectors and the sum of the measurements of the notched angular sectors is between 50% and 150%. The anchoring screw also includes a distal portion, having notched portions inscribed within notched angular sectors and separated by separation distal portions inscribed within separation angular sectors, where, over a screw pitch, a ratio between the sum of the measurements of the separation angular sectors and the sum of the measurements of the notched angular sectors is between 0% and 10%.

Abstract: The invention relates to a guiding ancillary device designed to cooperate with at least two bone surfaces, and to the method for the production thereof. The invention also relates to a guiding ancillary device for use in orthopedic surgery, and to an assembly comprising a guiding ancillary device and at least one medical device.

Abstract: A length adjustable modular screw includes a neck assembly and a shank. The neck assembly has proximal and distal ends and includes an expander component and a collet component that are slidably engagable by insertion of the expander component in a through channel of the collet component along a common axis. The length adjustable modular screw also includes a shank suitable for insertion and retention within a bone, the shank including a threaded portion between proximal and distal ends and a socket adapted to coaxially receive at least a portion of the distal end of the neck assembly. The length adjustable modular screw has a length that is selected by splaying at least a portion of the distal end of the engaged expander and collet components of the neck assembly within the socket of the shank.