Soft tissue retention devices, instrumentation and related methods are disclosed. The devices include a first member having a first head portion and a first shaft portion, the first head portion and the first shaft portion defining a cannulated opening that extends at least partially through the first member, and a second member having a second head portion and a second shaft portion extending from an inner side of the second head portion, the second head portion and the second shaft portion defining a cannulated opening that extends at least partially through the second member.

A compression force magnifier including a vertical axis through a body and a proximal surface of the body sloped at a predetermined angle relative to the vertical axis. A flat distal surface of the body is disposed opposite the proximal surface. A bore is disposed through the body from the proximal surface through the distal surface. The body is connected to an arm having a connection opening configured to allow connection of the body to a bone plate. The connection opening has a connection axis spaced from the vertical axis.

An intramedullary nail implant for positioning in a bone having a head and a shaft defining an intramedullary canal. The implant includes a distal portion having a shaft extending along a central axis and configured for positioning within the intramedullary canal. A proximal portion extends proximally from the distal portion. The proximal portion defines a contact surface which extends at least in part medially of the central axis such that it is configured to extend within a medial portion of the bone head. A method of implanting the nail is also provided.

The present invention provides a spinal plate which is used to perform fixation surgery on a spine in orthopedic surgery and neurosurgery. The spinal plate comprises a central body and a pair of rotation portions which are disposed on both sides in a longitudinal direction of the central body and each of the pair of rotation portions has bone screw. The spinal plate also comprises spike screw in each of the pair of rotation portions. Each of the pair of rotation portions include a rotation connection portion, and the central body includes a rotation support portion. Rotation pins are used to connect the central body with the pair of rotation portions disposed on both sides in a longitudinal direction of the central body and enable the pair of rotation portions to rotate clockwise or counterclockwise with respect to the central body.

A compression screw comprising a threaded shaft and a head associated with the proximal end of the shaft. The head has a plurality of outwardly extending projections spaced from one another so as to define a plurality of recesses there between for receiving a screw drive in such a way that rotational force may be transferred from the screw drive to the screw. The projections of the head may be provided with suture fixation holes or a suture coupling may be positioned over the shaft so as to extend between the projections of the head.

A variety of K-wires with imbedded plates are disclosed that allow for the plate in K-wire to be secured to the bone after insertion. Further, a donut shaped washer for capturing and securing the K-wire is disclosed. Also, a screw with a channel is disclosed that has a head shaped to capture and secure the K-wire. Finally, embodiments of a slotted washer are disclosed that captures and secures the K-wire.

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 surgical tool, comprising a needle comprising an aperture of sufficient diameter for receiving a screw; a tool, insertable into said aperture for inserting said screw and capable of engaging with and turning the screw; said screw comprising a shaft having threads in a first direction, a head having a bottom face having a flange, and a coil; said coil wound around the screw shaft in an opposing second direction as to the first direction; said coil comprising a coil end which is defined to engage with the flange on the bottom face.

A nut for treating a bone includes a head and a body extending longitudinally from the head to a free end and including a channel extending longitudinally thereinto from the free end, the channel configured to engage an end of a bone screw, and an exterior threading extending about the body from an exterior surface thereof along an entire length thereof, an outer contour of the exterior threading defined via radially outermost edges of the exterior threading, a first portion of the outer contour adjacent the head portion having a smaller diameter than a second portion of the outer contour extending from the first portion to the free end of the body.

A coupling device includes a receiving part having a head receiving portion for pivotably receiving a head of a bone anchor and a rod receiving portion defining a recess for receiving the rod, the rod receiving portion having an engagement structure for engaging a locking member to lock the rod in the recess and a first engagement surface different from the engagement structure for engaging an instrument, wherein the first engagement surface is formed away from radially outwardly facing regions of the rod receiving portion, and a locking ring positionable around the head receiving portion and having a second engagement surface for engaging the instrument. The locking ring can assume an insertion position where the head of the bone anchor is insertable into the head receiving portion, and a pre-locking position where the head is prevented from removal from the head receiving portion.