A bone screw has a screw body with a spherical head and a screw rod and a positioning sleeve with a connecting rod fixing seat and a calibration part. An annular cutting slot is defined between the connecting rod fixing seat and the calibration part. At least two pairs of connecting rod calibration openings are formed on a sidewall of the calibration part. An axial cutting slot is formed on a sidewall of an adjacent region of the connecting rod calibration openings. The spherical head is connected to a top portion of the screw rod. The screw body is pivoted to a bottom portion of the positioning sleeve. The spherical head is sleevingly arranged on a spherical pit of the connecting rod fixing seat. The calibration part can be split into two pieces and separated from the connecting rod fixing seat. The calibration part is removable from the positioning sleeve.

An implant for repairing a joint between a first bone and a second bone includes a first section constructed of a substantially rigid material and a graft constructed of soft tissue having a first end and a second end. The first section has a first end surface configured for positioning against the first bone. The graft is configured for stabilizing the first section relative to the first bone. A first fastener is configured for mounting to the graft and the first section to anchor the graft to the first section. A second fastener is configured for mounting to the graft and the first bone to anchor the graft to the first bone.

An apparatus for stabilization of a bone fracture site, including a wire that is configured to be positioned through corresponding holes of a first bone and an adjacent second bone; and a tension washer coupled to a first end of the wire, the tension washer rotatable about the first end of the wire, wherein the wire is configured to be positioned through the corresponding holes of the first and the second bone, the tension washer is configured to be positioned proximate a first surface of the second bone, wherein the tension washer includes a first surface having a length longer than a diameter of the corresponding holes of the first and the second bones, wherein the tension washer is configured to rotate such that the first surface of the tension washer abuts the first surface of the second bone.

An orthopedic instrument, comprising a pair of pivotally-connected arms, extending beyond a pivot axis of a first pivot; a pair of feet mounted to ends of the pair of pivotally-connected arms; and a quadrilateral linkage configured to maintain parallelism between the pair of feet over a range of angles and to selectively alter a distance between the pair of feet.

The guidance and positioning device may be a system for creating a passage in tissue, positioning fasteners or other implants, and tensioning an elongated fastening member, like a suture, thread, wire, or pin. In some embodiments, the device may allow for the implantation of multiple sutures and fasteners in tissue. A fastener may be positioned at the distal end of a flexible pushrod. The fastener may be connected with the pushrod or may be loosely fitted with the distal end of the pushrod. A suture may be looped through or connected with the fastener such that one, two, or more sections, legs, strands, or portions of the suture extend from the fastener.

An insertion tool for deploying a flip anchor cable, including: a mechanism having a safety button and a slider, wherein the mechanism is configured to apply a clamping force on a portion of the flip anchor cable when the mechanism is in a first position; an inner tube having a proximal end connected to the mechanism configured to house a second portion of the flip anchor cable; a handle including a safety button opening and a slider opening, wherein the handle is configured to enclose a portion of the mechanism; and an outer tube having a proximal end connected to the handle configured to receive the inner tube; wherein the mechanism is configured to decrease the clamping force on the flip anchor cable when the mechanism is in a second position and to deploy a flip anchor of the flip anchor cable in the second position.

Methods and devices for stabilizing spinal anatomical structures. Some example methods may include introducing a curved segment of an elongate fastener placement rod adjacent to a bone, providing a fastener at the leading end of the curved segment, and/or securing the fastener in place with respect to the bone.

Systems, methods, and apparatus are described herein for obtaining medical diagnostic measurements from implanted sensors. In various embodiments, an apparatus may include two or more clamps to be rigidly clamped to the spinal fusion rod at a distance from one another, and a strain-sensing system that is removably mountable to the two or more clamps to span the distance. The strain-sensing system may include one or more strain-sensing elements. In various embodiments, the two or more clamps may be configured to transfer strain detected in the spinal fusion rod to the one or more strain-sensing elements of the strain-sensing system.

A tissue fixation system is provided for dynamic and rigid fixation of tissue. A fastener connected with an elongate fastening member, such as a cable, wire, suture, rod, or tube, is moved through a passage between opposite sides of tissue. The fastener is provided with a groove that accommodates at least a portion of the fastening member to reduce the profile during the movement through the passage. The fastener is then pivoted to change its orientation. A second fastener can then be connected with the fastening member. While tension is maintained in the fastening member, the fasteners are secured against relative movement. This may be done by deforming the fastening member, either the first or second fasteners, or a bushing placed against the second fastener.

A bone anchor includes: a main body defining a longitudinal axis and including a head; at least one insertion hole which extends from a first opening formed in the head to a second opening formed in the main body, the at least one insertion hole having an axis which is arranged to be inclined with respect to the longitudinal axis of the main body at an angle, and the insertion hole being configured to receive and guide therethrough a pin-shaped element to be anchored within a bone or bone fragment; and a locking device configured to lock the position of the pin-shaped element inserted within the at least one insertion hole in an axial direction.