A vertebral column correction system for correcting a spinal deformity without fusing the joint segments is disclosed. The vertebral column correction system may have first and second vertebral anchors secured to first and second vertebrae. The vertebral column correction system may further comprise one or more intermediate vertebral anchors secured to vertebrae between the first and second vertebrae. A connection member may be disposed within a head portion of the vertebral anchors. At least a portion of the connection member may be a flexible member, such as a flexible cord, configured for tensioning between at least two vertebral anchors for providing a desired amount of tension to apply a correctional force to the spinal column. A spring member, or other tensioning member, may maintain the tension of the connection member.

Embodiments herein are generally directed to extendable rods for use in orthopedic assemblies. In some embodiments, these implants may be used in conjunction with procedures to treat spinal deformities, including, but not limited to, early onset scoliosis.

A spinal distraction system including a bearing connector fastened to a fixated rod and a sliding rod, wherein the sliding rod includes a spring and a stop ring is disclosed. A method of distracting vertebrae is also disclosed.

A method comprises the steps of: imaging a patient anatomy; selecting an implant strategy for at least one bone fastener having a first member; registering the imaging of the patient anatomy with imaging of at least a portion of a robot; engaging the first member with tissue of the patient anatomy via robotic guidance according to the implant strategy; and subsequently, manipulating the patient anatomy. Systems, spinal constructs, implants and surgical instruments are disclosed.

A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. The receiver can have crimp tabs, but is devoid of spring tabs and collet-like flexible structures. A down-loadable compression insert (some with lock and release feature), a down-loadable friction fit split retaining ring and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled. The receiver and insert include aligned tool receiving apertures for lock and release of the polyaxial mechanism.

According to some embodiments, systems and methods of ultrasonic detection of implantable medical device distraction are provided. The system includes a first elongate member and a second elongate member. The first elongate member has a first end that is configured to be attached to a first location on the skeletal system of a subject, a second end, and at least one landmark identifiable using ultrasound. The second elongate member has a first end that is movably coupled to the second end of the first elongate member, a second end configured to be attached to a second location on the skeletal system, and at least one landmark identifiable using ultrasound. Movement of the first elongate member in relation to the second elongate member causes a corresponding movement of the at least one first landmark in relation to the at least one second landmark which can be detected using ultrasound.

A tool set for implanting bone screws in a human spine, followed by the implantation of a rod into the bone screws includes end guide tools having flexible back wall flaps that receive opposite ends of the rod and intermediate guide tools that hold the rod in intermediate locations between the end guide tools. Both the end and intermediate guide tools include an attachment structure for operably connecting the guide tool to a bone screw. The attachment structure includes an undercut and/or recess so as to resist splaying and separation of the guide tool from an attached bone screw.

A pivotal bone anchor assembly includes a shank, a receiver with an open channel in communication with an axial bore, and a pressure insert with an upwardly-facing seating surface for receiving an elongate rod. The axial bore includes a downwardly-facing surface below a closure top mating feature and one or more integral structures protruding inwardly toward a central longitudinal axis. The insert includes one or more notches formed into an outer side surface and an upwardly-facing surface positioned radially outward from the seating surface. Upon installation into the axial bore, the insert is rotatable about the longitudinal axis until the insert upwardly-facing surface is rotated under the receiver downwardly-facing surface to inhibit upward movement of the insert within the axial bore along the longitudinal axis and the receiver inwardly-protruding structures become positioned within the insert outer notches to prevent further rotation of the insert within the axial bore.

A vertebral column correction system for correcting a spinal deformity without fusing the joint segments is disclosed. The vertebral column correction system may have first and second vertebral anchors secured to first and second vertebrae. The vertebral column correction system may further comprise one or more intermediate vertebral anchors secured to vertebrae between the first and second vertebrae. A connection member may be disposed within a head portion of the vertebral anchors. At least a portion of the connection member may be a flexible member, such as a flexible cord, configured for tensioning between at least two vertebral anchors for providing a desired amount of tension to apply a correctional force to the spinal column. A spring member, or other tensioning member, may maintain the tension of the connection member.

A receiver assembly includes a receiver with a base defining a central bore for receiving the head of a bone anchor and upright arms defining a channel for receiving a rod, with the central bore having through apertures extending outwardly to outer side surfaces of the receiver and the upright arms having top surfaces, opposite front and back surfaces, vertical tool-engaging slots extending downward from the top surfaces to the through apertures for slidably receiving an insert compression tool, and horizontal tool-engaging grooves on either side of the vertical slots that extend laterally to a front or back surface of the upright arm. The assembly also includes an insert positionable within the central bore with an upward-facing outer engagement surface located within a through aperture and aligned with a vertical tool-engaging slot, and which is configured for compressive engagement by the insert compressing tool to independently lock a position of the receiver with respect to the bone anchor.