A minimally invasive system for retraction, compression and distraction includes a tap having a shaft with threads and a head, a blade having a proximal end and a distal end and a base removably mountable to the proximal end. The tap is configured to form screw threads in a bone. The distal end is mountable to the head. The blade is pivotable relative to the head in a mounted configuration. The blade is configured to facilitate soft tissue retraction in the mounted configuration. The base is configured to manipulate the blade to retract and compress segments of the bone. The base is configured to provide distraction and/or compression using the provisional taps either directly or through the use of blades, insertion devices or tubes. The blades may be used to retract tissue and provide a visual field either independent or in conjunction with the provisional taps, insertion devices or tubes.

A surgical system includes a power tool that generates torque; a torque sensor for measuring a torque characteristic of the power tool; a user interface; at least one processor; and a memory. The memory stores instructions for execution by the at least one processor that, when executed, cause the at least one processor to: receive torque data from the torque sensor, the torque data corresponding to the measured torque characteristic; evaluate the torque data; and execute a predetermined action based on the evaluation.

A system includes a bone anchor including a shank having a first end, a second end, a channel extending through the shank with a channel axis, and an internal advancement structure having at least a portion being closer axially to the second end than to the first end, and an elongate instrument configured to extend through the channel, with a tip portion and an external advancement structure configured to cooperate with the internal advancement structure. Engagement between the advancement structures facilitates holding of the tip portion at a first axial position relative to the bone anchor and movement of the tip portion from the first axial position towards both the first and second ends of the shank. The tip portion and the external advancement structure of the elongate instrument are insertable into and removable from the channel via the first end of the shank.

Methods for correction of spinal deformities using bone anchors having one or more features configured to actively draw in and/or compact vertebral bone into an inner chamber. In some implementations, a first bone anchor having an inner chamber may be advanced into a first vertebral body of a spinal column. One of more features of the inner chamber may, as the first bone anchor is rotatably or otherwise advanced, actively draw and compact vertebral bone into the inner chamber. A second bone anchor may be advanced into a second vertebral body of the spinal column, after which a tether may be coupled between the first and second bone anchors to apply a corrective force to at least a portion of the spinal column.

A rotary tool configured for high speed condensing and/or cutting action to form a hole. The tool has a body around which is formed a plurality of flutes. Each flute has a cutting face on one side and a densifying face on the other side. A land between adjacent flutes establishes a substantially margin-less working edge along each cutting face. The working edges are configured to produce osseodensification when the tool is operated in the condensing mode. A cavity is formed inside the body with access through its apical end. A plurality of spurs rim the apical end. Each spur has a grinding edge that is offset from said longitudinal axis in the cutting direction of rotation. Some of the flutes open directly into a gullet formed between adjacent spurs. Some of the flutes open directly into leading flanks that fall away from each grinding edge.

Bone anchors and related systems and methods for spinal deformity correction. In some implementations, two adjacent bone anchors may be advanced into respective, adjacent vertebral bodies of a spinal column. Cancellous bone may be compacted within respective inner chambers of the bone anchors. The inner chambers may comprise at least one of a plurality of bone engaging protrusions and a profile that increases in cross-sectional area, at least in part, from a proximal end of the inner chambers to a distal end of the inner chambers. A tether may then be coupled between the first and second bone anchors to apply a corrective force to at least a portion of the spinal column.

A direction checking pin and a guide tap drill kit for insertion of a fixture for an implant includes an endosseous fixing guide, a direction checking pin body and a guide tap drill. The endosseous fixing guide and the direction checking pin body are combined and then inserted into an already-formed insertion hole and only the direction checking pin body is removed after checking a direction of the insertion hole, and the guide tap drill is inserted to the endosseous fixing guide remaining in the insertion hole and then rotated so as to enter into the insertion hole such that a screw thread is formed in accordance with the direction of the insertion hole at an inner wall of the insertion hole by the tap drill.

In some embodiments, a spinal stabilization system may be formed in a patient using quick-connect sleeve assemblies. Each quick-connect sleeve assembly can be coupled to a bone fastener assembly in a fast and intuitive way. In one embodiment, a quick-connect sleeve assembly has a detachable member and a movable member. Both members engage a collar of the bone fastener assembly. In one embodiment, the engagement can be locked via one or more locking features to facilitate screwing a bone fastener of the bone fastener assembly onto a vertebral body in a minimally invasive surgical procedure. Each quick-connect sleeve assembly has a low profile and is particularly shaped for minimally invasive entry.

Methods of deploying an intravertebral implant having an expandable anterior part, a posterior part coupled to the expandable anterior part, and a pedicle fixation element. The expandable anterior part is positioned within the vertebral body, and the posterior part may be positioned within the vertebral body. The pedicle fixation element is anchored to the vertebral body. The expandable anterior part is moved relative to the pedicle fixation element, for example, in two degrees of freedom. Movement in a first of the two degrees of freedom is independent from movement in a second of the two degrees of freedom. The expandable anterior part may be translated without being rotated along a main axis of the pedicle fixation element. Filling material may be injected through the posterior part. Rotational movements of the expandable anterior part relative to the pedicle fixation element may be locked.