An implant device (100d) for engagement with a bone of a subject, said the implant device (100d) comprising a distal end (102d), a proximal end (104d), a central shaft (106d), a longitudinal central axis (108d) and a helical thread portion (110d) having a leading edge (114d) and a trailing edge (116d). A portion of the leading edge (114d) extends in a direction towards the distal end (102d) of the implant further than the most distal portion of the root (112d) of the thread portion (110d); and wherein the trailing edge (116d) extends in a direction of from the most proximal portion of the root (112d) in a radial outward direction and towards the distal end (102d); and a crest portion (118d) disposed between the leading edge (114d) and the trailing edge (116d) and wherein said the crest portion (118d) forms a radially outward portion of the thread portion (110d). Hence, the implant device (100d) improved the axial pull-out strength and reduced stress concentration.

Briefly, the invention relates to a surgical tool and method for forming a pilot bore by inserting a guide wire into bone. The surgical tool is constructed and arranged for use in conjunction with X-ray or ultrasound machines. More particularly, the device includes a cannulated hand grip and driving tool used for the rotation of a bone or pedicle screw into bone. The rear portion of the hand grip includes a slide assembly that is suited to grip a guide wire. The slide assembly includes a user adjustable stop to control the sliding movement of the guide wire. The rear surface of the slide is constructed to be impacted with a hammer or similar device, whereby the stop prevents the guide wire from penetrating the bone further than desired. Should it be desired that the wire be retracted, a jack member is included to allow the wire to be precisely retracted. The hand grip is securable to various surgical driving tools for the purpose of providing the ability to cooperate with various brands of pedicle screws and other surgical implants for spinal procedures.

A locking-cap module may include a locking-cap having a first connecting flange and a second connecting flange opposite the first connecting flange extending from a side surface of the locking-cap. The locking-cap may further include a first retaining rail and a second retaining rail opposite the first retaining rail. The locking-cap module may further include a set screw configured to engage with corresponding threads of the locking-cap. In some embodiments, the first connecting flange and second connecting flange are configured to engage with a connector such that the top surface of the locking-cap is flush with a top surface of the connector in an engaged position. In some embodiments, the set screw is initially coupled to the locking-cap by a pre-loaded connection. In some embodiments, a surgical tool is provided for rotating the locking-cap module into the engaged position.

A sleeve can be adapted to reinforce a bone anchor, and can include a body, a lock, and an actuator. The body can include a first sleeve arm and a second sleeve arm, where each can extend longitudinally along opposing sides of a longitudinal bore open at a distal end of the sleeve. The lock can be coupled to the body and releasably securable to a channel of a head of the bone anchor to secure the sleeve to the anchor.

An expandable screw for orthopedic insertion and expansion between a collapsed state and an expanded state. The screw has an upper externally-threaded body segment, a lower externally-threaded body segment opposite the upper external thread segments, and an expansion member extending along a longitudinal axis thereof. The expansion member connecting the upper externally-threaded body segment to the lower externally-threaded body segment, and configured during the expansion between the collapsed state and the expanded state to separate the upper externally-threaded body segment from the lower externally-threaded body segment.

Modular surgical instruments and related methods are disclosed herein, e.g., for performing rod reduction, derotation, and/or set screw insertion during spinal surgery. An exemplary system can include an instrument body configured to couple to a bone anchor assembly to provide a modular platform for carrying out various steps of a surgical procedure. For example, the instrument body can receive a reduction instrument therethrough for reducing a spinal rod into the bone anchor assembly. A derotation instrument can be attached to the reduction instrument for performing derotation maneuvers or applying other manipulation forces. A modular driver or handle adapter can be attached to the reduction instrument and/or to the derotation instrument to facilitate rod reduction. Any of the instrument body, the reduction instrument, and the derotation instrument can include a working channel therethrough. A set screw or closure mechanism, and a driver instrument for applying the set screw or closure mechanism to the bone anchor assembly, can be inserted through the working channel.

Spinal correction surgical techniques and methodologies for correction of scoliosis using non fusion anterior scoliosis correction, including soft tissue releases, unique correction techniques such as de-rotation, and unique single and dual anchor screw/cord applications.

The present disclosure includes apparatuses, systems, and methods for vertebral disc repair. An example apparatus includes a first surface including a concave opening configured to receive an artificial disc, a second surface, and an aperture extending through the first surface and the second surface, wherein the aperture is configured to receive a bone screw.

Various methods and apparatus for dynamic stabilization of bones, and especially of vertebra. Disclosed herein are bushings that permit axial movement of a rod, tether, or similar interconnection device relative to an anchoring head that is coupled to a bone. Some bushings further allow lateral relative movement or rotational relative movement, such additional relative movement being limited by the size and shape of the bushing, the size and shape of the interconnection device, the size and shape of the bushing container, the manner of attaching the anchoring head to the bone, or other considerations.

An instrument for bending a surgical rod includes first and second arm assemblies. The first arm assembly includes first and second arms having respective first and second receiving portions configured to receive the surgical rod therein. The second arm assembly includes third and fourth arms having respective third and fourth receiving portions configured to receive the surgical rod therein. The instrument is reconfigurable from an initial configuration in which the first and third receiving portions of the respective first and third arms engage the surgical rod such that spreading of the first and third receiving portions in a first direction bends the surgical rod in a first orientation and spreading of the first and third receiving portions in a second direction bends the surgical rod in a second orientation opposite to the first orientation.