A screw insertion system has a screw having a threaded shaft and a head. The head has a conically tapered outer surface, the taper increasing in distance from a central longitudinal axis of the screw from a free end of the head towards a larger diameter adjacent the connection between the head and the threaded shaft. The conically tapered head outer surface has preferably two helically extending partially rounded threads. The head has a drive element for engaging a driver. A tubular screw holder has an outer surface and internal bore extending between a leading end and a trailing end for receiving the screw. The leading end having a conically tapered inner threaded portion for engaging the conically tapered outer thread of the screw head. The tubular screw holder outer surface having a diameter less than or equal to the maximum diameter of the conically tapered head.

Implants, devices, systems, and methods for achieving ligament fixation are disclosed. An implant comprises a cap member comprising an internally threaded opening extending from a first end thereof, an anchor portion comprising a first end that defines a tip of the implant and external threads, and a coupling portion extending between the cap member and the anchor portion. The coupling portion of the implant includes an externally threaded portion threadably coupled within the internally threaded opening of the cap member. The cap member of the implant is longitudinally moveable along the coupling portion. Insertion instruments for inserting an implant for ligament fixation are also disclosed. Methods of using an implant for achieving ligament fixation are also disclosed.

A surgical device has a shaft including a proximal portion and a distal portion being disposable with a surgical robot guide to engage vertebral tissue. The proximal portion defines a detectable marker and is connectable with at least one surgical instrument for manipulating the vertebral tissue. Systems, surgical instruments, spinal implants, constructs and methods are disclosed.

A screw insertion system has a screw having a threaded shaft and a head. The head has a conically tapered outer surface, the taper increasing in distance from a central longitudinal axis of the screw from a free end of the head towards a larger diameter adjacent the connection between the head and the threaded shaft. The conically tapered head outer surface has preferably two helically extending partially rounded threads. The head has a drive element for engaging a driver. A tubular screw holder has an outer surface and internal bore extending between a leading end and a trailing end for receiving the screw. The leading end having a conically tapered inner threaded portion for engaging the conically tapered outer thread of the screw head. The tubular screw holder outer surface having a diameter less than or equal to the maximum diameter of the conically tapered head.

Implants, devices, systems, and methods for achieving ligament fixation are disclosed. An implant comprises a cap member comprising an internally threaded opening extending from a first end thereof, an anchor portion comprising a first end that defines a tip of the implant and external threads, and a coupling portion extending between the cap member and the anchor portion. The coupling portion of the implant includes an externally threaded portion threadably coupled within the internally threaded opening of the cap member. The cap member of the implant is longitudinally moveable along the coupling portion. Insertion instruments for inserting an implant for ligament fixation are also disclosed. Methods of using an implant for achieving ligament fixation are also disclosed.

A bone screw cutting system can include a cutting assembly having a plurality of blades. The system can further include a position adjustment assembly coupled to the cutting assembly and configured to receive a bone screw blank and position the bone screw blank relative to the cutting assembly. The cutting assembly is configured to cut a bone screw blank received by the position adjustment assembly and to form a self-tapping end portion at a cut end of a resulting cut bone screw.

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.

Disclosed is a fixation system and method. The system and method may fix a selected member to a subject during a procedure. The selected member may include a tracking device or registration member.

A surgical bone screw (1) and driver (31), and a method for using them for repairing an osteotomy or fracture. The screw has a shaft having a head (5) at its proximal end, screw threads (3) at its distal end and a compression member (7) between the head and the screw threads. In an embodiment, the threads are self-tapping and self-drilling, the head is polygonal, and the sides of the polygon are convex. The driver turns the screw until the threads cross a fracture site and the compression member contacts the proximal bone fragment. The threads and compression member draw the fragments together and leaves the head entirely clear of the bone surface. The screw is removed through a small incision. Tilting the driver to allow the socket to engage an inwardly extending lower portion of the head permits the driver to lift the screw out of the bone.

Bone graft comprising cortical bone material having a screw shank with an external thread and a screw head. Screw head has an outer jacket surface which is rotationally symmetrical about a screw head axis and has an external thread. At least two recesses, which are distributed about the screw head axis, extend axially in the direction of the screw head axis and open into an end face of a free end of the screw head, for receiving an insertion tool. The recesses are each formed by side faces, which extend from the outer jacket surface in the direction of the screw head axis and merge into one another in a surface section close to the axis. By this design, introduction of an insertion torque is optimized and new surgical areas of application such as in intramedullary splinting, arthroscopic insertion and deep insertion of the graft into an bearing bone are possible.