The cannulated compression device creates fixation and compression across its tang housing, thus stabilizing and closing a bone fracture during placement. After insertion of the cannulated compression device, tangs are extended outward from the tang housing, locking the tang housing with respect to both rotational and axial movement. A compression nut is then threaded onto the proximal end of the tang housing. The nut has two sets of threads: a first set of threads interfaces with the tang housing, a second set of threads interfaces with the bone. By using different pitches, the amount of linear movement for the first set of threads and second set of threads is different.

An intraoperative monitoring module (IMM) for assessing strength of screw attachments to bone and detecting breaches includes a torque sensor on a rotatable tool receptacle and a variable-output current source. The IMM provides concurrent monitoring of rotational torque applied to a screw and stimulus current passing through the screw into bone for evoked electromyography. A motor housing configured to drive in rotation a tool receptacle on the IMM, a screw driver modified for carrying the stimulus current, and a screw attached to the screw driver are optionally included. Cooperative anti-rotation features on the motor housing and IMM support accurate torque measurements and prevent the outer housing of the IMM from rotating with the tool receptacle while a screw is being driven. The motor housing optionally provides electrical power to the IMM.

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.

A surgical system includes a bone fastener having a head and a shaft, The head has a drive interface surface including elliptical edges. A surgical instrument includes an inner drive and an outer sleeve that is engageable with an outer surface of the head to dispose the inner drive and the outer sleeve with the head in a co-axial, capture orientation, The inner drive has a drive interface surface including a plurality of spaced apart lobes. Each lobe has an elliptical edge engageable with one of the elliptical edges of the drive interface surface of the head. Spinal constructs, implants and methods are disclosed.

Methods and devices are provided for anchoring a ligament or tendon to bone. In one embodiment, a biceps tenodesis system is provided and includes a sheath inserter tool, an expandable sheath configured to couple to the sheath inserter tool, an expander inserter tool, and an expander configured to couple to the expander inserter tool. The sheath inserter tool is configured to advance the expandable sheath, with a tendon disposed therearound, into a bone hole, and the expander inserter tool is configured to advance the expander through an outer shaft of the sheath inserter tool and to drive the expander into the sheath. The expander is configured to be received within a lumen extending at least partially through the expandable sheath to thereby expand the sheath. In this way, the system delivers the tendon or ligament into the bone hole and locks the sheath and tendon within the bone hole.

A fastener cartridge can be used with a shaft of a tool during an orthopedic procedure. The fastener cartridge can have a main housing that can be attached to fastener housing including a fastener chamber and a backstop component. The fastener chamber includes a plurality of non-flexible tabs and the backstop component includes a plurality of resiliently flexible tabs. The fastener housing is configured to include a plurality of fasteners that are arranged therein such that the longitudinal axes of the fastener chamber and the plurality of fasteners are collinear. The plurality non-flexible tabs prevent one of the fasteners from inadvertently passing entirely out of an outlet of the fastener chamber and the plurality of resiliently flexible tabs allow the fasteners to move axially in the first direction and restrict movement of the fasteners in a second direction opposite the first direction.

A surgical instrument for implanting a bone fastener is provided. The surgical instrument comprises an elongated body having a frangible region and a distal end adjacent to the frangible region. The distal end of the surgical instrument is configured to engage the bone fastener. The bone fastener is less frangible than the frangible region of the elongated body of the surgical instrument. Kits and methods are also disclosed.

An orthopaedic driving instrument including a first end portion, a second end portion opposite the first end portion, and a central portion, intermediate the first and second end portions, comprising a central section having an outer diameter representing a maximum outer diameter of the driving instrument. The first end comprises a first driving interface sized and shaped to, in operation of the instrument, engage a screw interface of a screw for applying torque to the screw. The second end comprises a second driving interface sized and shaped as the size and shape of the first driving interface.

A kit for orthopedics, preferably for osteosynthesis, has a mechanical fixing system that includes a plate for straddling between two bone fragments and fixing screws for fixing the plate to the two bone fragments. The plate has a thickness of about 0.5-4 mm and conical through holes, the fixing screws each having a head, a self-tapping stem, and a conical collar interposed between the head and the self-tapping stem to define a conical coupling within a corresponding conical through hole of the plate. The heads of the fixing screws have a upper surfaces with a recessed and shaped mark for coupling with the tip of a screwing tool and external side walls with a thread for engaging a gripping tool. When the conical collar is inserted into a corresponding conical through hole of the plate, the head protrudes outwardly from the plate.

The invention provides a screw pegging device. The screw pegging device comprises a holding handle, a handle rod, a sleeve and a screw part, wherein the sleeve is provided with a perforative cavity, and clamping grooves are arranged at two ends of the cavity; a groove opening running through the cavity is arranged in the side wall of the sleeve, a limiting clamping part is arranged in the groove opening, one end of the limiting clamping part is connected with the groove opening, and the other end of the limiting clamping part is provided with a convex clamping edge; the screw part is a long rod, one end of the long rod is provided with a screw head, a first clamping part is arranged at the joint of the long rod and the screw head, and an annular groove edge is arranged on the side wall of the long rod; and the holding handle sleeves one end of the handle rod, the other end of the handle rod is inserted and clamped in a third clamping groove of the sleeve, an axial insertion hole is formed in the handle rod, the long rod runs through the cavity and is inserted and embedded in the insertion hole, a fourth clamping groove is in clamping connection with the first clamping part, and the convex clamping edge is embedded and clamped in the annular groove edge. In the screw pegging device, the firm connecting is guaranteed by utilizing the clamping groove structure, the screw part long rod extends into the handle rod, then the strength of the joint of the handle rod and the screw part is enhanced, meanwhile, through the limiting clamping part, the axial limiting fixing is realized between the sleeve and screw part, and the disassembly is convenient.