Treatment of spinal irregularities, including, in one or more embodiments, derotation apparatus and systems that can be used to reduce the rotation of vertebral bodies. Derotation apparatus that may comprise a tube assembly comprising an inner sleeve and an outer sleeve disposed over the inner sleeve. The inner sleeve may have a distal end for attachment to an implant. The tube assembly may further comprise a handle assembly. The tube assembly may further comprise a ball joint assembly disposed between the tube assembly and the handle assembly. The ball joint assembly may comprise a ball joint configured for attachment to a coupling rod. The ball joint assembly further may comprise a reducing extension below the ball joint, the reducing extension being sized to fit in a central bore of the inner sleeve. Orthopedic fixation devices comprising a ball joint are also disclosed.

The present disclosure includes bone screws and assemblies thereof for surgical procedures of the spine including but not limited to posterior spinal fixation procedures.

Presently disclosed is a spinal implant. In an embodiment, a spinal implant includes a porous body configured to promote bone growth. The porous body may have an attachment portion that is configured to secure the spinal implant to a fixation system attached to one or more vertebra. The porous body may also include a fusion plate extending from the attachment portion and configured to contact transverse processes, lamina, or facet of adjacent vertebrae. Accordingly, when the attachment portion is secured to the fixation system, the fusion plate may be maintained in compression against the transverse processes, lamina, or facet.

Embodiments herein are generally directed to fastener or fixation members, such as bone screws, for use in orthopedic stabilization assemblies.

The present invention is directed at a polyaxial pedicle screw comprising a detachable polyaxial head and bone screw. The detachable polyaxial head may comprise a tulip head, a collet with one or more connectors (e.g., pins) to secure it, and a spherical locking member which may lock onto the bone screw.

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member. The distal portion of the wing can define a bone anchor opening through which one or more auxiliary bone anchors can be disposed to augment the fixation of the assembly's primary bone anchor. A distal surface of the distal portion of the wing can be obliquely angled relative to a proximal-distal axis of the spanning portion to face one of a caudal direction or a cephalad direction. A distal surface of the distal portion of the wing can be obliquely angled relative to the proximal-distal axis of the spanning portion to face one of a medial direction or a lateral direction. Surgical methods using the bone anchor assemblies described herein are also disclosed.

The present disclosure includes bone screws and assemblies thereof for surgical procedures of the spine including but not limited to posterior spinal fixation procedures.

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a plate that is seated between the receiver member and the rod and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a hook that extends out from the receiver member to hook onto an anatomical structure or another implant to augment the fixation of the assembly's primary bone anchor. Surgical methods using the bone anchor assemblies described herein are also disclosed.

An adjustable cervical link system that includes a plurality of cervical links for adjustable fixation to articles of a patient's cervical spine, and a connecting assembly having a generally rectangular loop shape defining a substantially open interior therebetween. Each cervical link has a plurality of circular holes each arranged to receive a screw thereby securing the cervical link to the respective article of a patient's cervical spine at a bottom portion of the cervical link. Each cervical link has a plurality of recessed portion along a top portion of the cervical link. Each recessed portion has a generally U-shaped cross-section formed by a bottom portion and a pair of spaced apart side walls. The connecting assembly is arranged to be placed in and frictionally engage the U-shaped cross-section of the recessed portions.

A pedicle screw device for fixating at least two adjacent vertebral bodies is presented. The device consists of a bone screw which is implanted into the pedicle of a vertebral body. A second bone screw is implanted into the pedicle of a second vertebral body. A polyaxial head is then inserted over each bone screw. The polyaxial heads can then be slid into a retaining position on the bone screw, allowing them to rotate about the spherical portion of the bone screw. The polyaxial heads are then attached to one another with a rod. Finally, a locking screw is inserted into the polyaxial heads to force the rod against the bone screw as well as the polyaxial head, locking them in place. The rod also serves to prevent the polyaxial head from disconnecting from the bone screw.